{ "Space Conditioning": { "Air Conditioner": { "units": "2023$", "classes": { "Centrally ducted": { "x1": { "coefficient_low": 196.96609519999998, "coefficient_mid": 328.2768253333333, "coefficient_high": 459.5875554666666, "metric": "Cooling Capacity", "unit": "Tons", "lower_bound": 1.5, "upper_bound": 5.0 }, "x2": { "coefficient_low": 356.844, "coefficient_mid": 594.74, "coefficient_high": 832.636, "metric": "SEER1", "unit": "Unitless", "lower_bound": 13.0, "upper_bound": 24.0 }, "b": { "int_low": -3533.3616704148158, "int_mid": -5888.936117358026, "int_high": -8244.510564301236 }, "install": { "new_construction": { "multiplier": 1.5, "adder": -327.4074074074074 }, "retrofit": { "multiplier": 1.5, "adder": 0.0 } }, "lifetime": 22.333333333333332, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Need for condensate line/drain", "Condition of existing electrical system", "Need for additional wiring/switching", "Need for additional structural support", "Condition of existing duct system", "Type of equipment", "Contractor experience" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking", "Homewyse", "LBNL Regressions, August 2024" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "Uses SEER1 coefficient for ASHPs from [14] to have consistent relationship between cost and SEER for ASHPs and Central ACs. Spot checked with [17]. Retail and installation split backed out using assumed 1.5 ratio between installation cost and retail cost, derived from industry insider conversations. Low and High ranges assumed to be +/-30% based on previous REMDB ranges, corroborated with typical RMSE values from LBNL regressions. Installation subtractor for new construction derived from [2]." } }, "Room AC (window or through-wall)": { "x1": { "coefficient_low": 350.1600000000001, "coefficient_mid": 364.33200000000005, "coefficient_high": 311.64, "metric": "Capacity", "unit": "Tons", "lower_bound": 0.4166666666666667, "upper_bound": 2.3333333333333335 }, "x2": { "coefficient_low": 2.082501, "coefficient_mid": 6.069364, "coefficient_high": 25.478424, "metric": "CEER", "unit": "Unitless", "lower_bound": 9.4, "upper_bound": 15.0 }, "b": { "int_low": 0.194766, "int_mid": 13.27746, "int_high": 2.001877 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 199.5576765067651 }, "retrofit": { "multiplier": 1.0, "adder": 352.6076765067651 } }, "lifetime": 10.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Need for condensate line/drain", "Condition of existing electrical system", "Need for additional wiring/switching", "Type of equipment", "Contractor experience" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, Medium Source Diversity", "notes": "CEER metric does not scale well with predicted cost." } } } }, "Air Source Heat Pump": { "units": "2023$", "classes": { "Centrally ducted": { "x1": { "coefficient_low": 639.168, "coefficient_mid": 1065.28, "coefficient_high": 1491.3919999999998, "metric": "Cooling Capacity", "unit": "Tons", "lower_bound": 1.5, "upper_bound": 5.0 }, "x2": { "coefficient_low": 356.844, "coefficient_mid": 594.74, "coefficient_high": 832.636, "metric": "SEER1", "unit": "Unitless", "lower_bound": 13.8, "upper_bound": 24.0 }, "b": { "int_low": -1374.6, "int_mid": -2291.0, "int_high": -3207.3999999999996 }, "install": { "new_construction": { "multiplier": 1.5, "adder": -191.5500000000011 }, "retrofit": { "multiplier": 1.5, "adder": -1384.0 } }, "lifetime": 15.633333333333333, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Location of equipment", "Need for condensate line/drain", "Condition of existing electrical system", "Need for additional wiring/switching", "Condition of existing duct system", "Type of equipment", "Incentive programs", "Market maturity", "Contractor experience", "Total project cost can vary significantly based on the complexity of the installation and local market conditions. Like-for-like system replacements that do not require other infrastructure modifications will have lower overall costs. Systems requiring changes to ductwork or electric wiring can significantly increase installed costs. Contractor familiarity with heat pumps and local adoption rates will also contribute to varied pricing among other considerations listed" ], "data_sources": [ "LBNL Regressions, August 2024" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "Total project costs derived from LBNL database compiled from incentive program data, include many datapoints from California (TECH) and Massachusetts. Costs were divided by locations multipliers to correct for higher or lower labor and material costs. Retail and installation split backed out using assumed 1.5 ratio between installation cost and retail cost (derived from industry insider conversations) although some Mass. program data suggests this ratio may be as high as 2 in some markets. Low and High ranges assumed to be +/-40% based on previous REMDB ranges, corroborated with typical RMSE values from LBNL regressions. Source data variability (e.g., 1.5 times interquartile range) typically exceeds this range in both directions. Subtracted $1384 from retrofit cost to represent cost of new 240v circuit(s), based on the average cost for ASHP projects involving fuel substitution, per LBNL database. Installation subtractor for new construction derived from [2]." } }, "Centrally ducted, with new circuit": { "x1": { "coefficient_low": 639.168, "coefficient_mid": 1065.28, "coefficient_high": 1491.3919999999998, "metric": "Cooling Capacity", "unit": "Tons", "lower_bound": 1.5, "upper_bound": 5.0 }, "x2": { "coefficient_low": 356.844, "coefficient_mid": 594.74, "coefficient_high": 832.636, "metric": "SEER1", "unit": "Unitless", "lower_bound": 13.8, "upper_bound": 24.0 }, "b": { "int_low": -1374.6, "int_mid": -2291.0, "int_high": -3207.3999999999996 }, "install": { "new_construction": { "multiplier": 1.5, "adder": -191.55000000000018 }, "retrofit": { "multiplier": 1.5, "adder": 0.0 } }, "lifetime": 15.633333333333333, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Location of equipment", "Need for condensate line/drain", "Condition of existing electrical system", "Need for additional wiring/switching", "Condition of existing duct system", "Type of equipment", "Incentive programs", "Market maturity", "Contractor experience", "Total project cost can vary significantly based on the complexity of the installation and local market conditions. Like-for-like system replacements that do not require other infrastructure modifications will have lower overall costs. Systems requiring changes to ductwork or electric wiring can significantly increase installed costs. Contractor familiarity with heat pumps and local adoption rates will also contribute to varied pricing among other considerations listed" ], "data_sources": [ "LBNL Regressions, August 2024" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "Total project costs derived from LBNL database compiled from incentive program data, include many datapoints from California (TECH) and Massachusetts. Costs were divided by locations multipliers to correct for higher or lower labor and material costs. Retail and installation split backed out using assumed 1.5 ratio between installation cost and retail cost (derived from industry insider conversations) although some Mass. program data suggests this ratio may be as high as 2 in some markets. Low and High ranges assumed to be +/-40% based on previous REMDB ranges, corroborated with typical RMSE values from LBNL regressions. Source data variability (e.g., 1.5 times interquartile range) typically exceeds this range in both directions. Installation subtractor for new construction derived from [2]." } }, "Non-ducted, single-zone": { "x1": { "coefficient_low": 1878.0479999999998, "coefficient_mid": 3130.08, "coefficient_high": 4382.111999999999, "metric": "Cooling Capacity", "unit": "Tons", "lower_bound": 0.5, "upper_bound": 1.5 }, "x2": { "coefficient_low": 96.24799999999999, "coefficient_mid": 160.41333333333333, "coefficient_high": 224.57866666666663, "metric": "SEER1", "unit": "Unitless", "lower_bound": 13.0, "upper_bound": 28.4 }, "b": { "int_low": -805.9999999999999, "int_mid": -1343.3333333333333, "int_high": -1880.6666666666665 }, "install": { "new_construction": { "multiplier": 1.5, "adder": -191.55 }, "retrofit": { "multiplier": 1.5, "adder": 0.0 } }, "lifetime": 15.633333333333333, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Location of equipment", "Need for condensate line/drain", "Condition of existing electrical system", "Need for additional wiring/switching", "Type of equipment", "Incentive programs", "Market maturity", "Contractor experience", "Total project cost can vary significantly based on the complexity of the installation and local market conditions. Like-for-like system replacements that do not require other infrastructure modifications will have lower overall costs. Systems requiring changes to ductwork or electric wiring can significantly increase installed costs. Contractor familiarity with heat pumps and local adoption rates will also contribute to varied pricing among other considerations listed" ], "data_sources": [ "LBNL Regressions, August 2024" ], "qualitative_rank": "High SS, Medium R2, Medium Source Diversity", "notes": "Total project costs derived from LBNL database compiled from incentive program data, include many datapoints from California (TECH) and Massachusetts. Costs were divided by locations multipliers to correct for higher or lower labor and material costs. Retail and installation split backed out using assumed 1.5 ratio between installation cost and retail cost (derived from industry insider conversations) although some Mass. program data suggests this ratio may be as high as 2 in some markets. Low and High ranges assumed to be +/-40% based on previous REMDB ranges, corroborated with typical RMSE values from LBNL regressions. Source data variability (e.g., 1.5 times interquartile range) typically exceeds this range in both directions. Subtracted $1384 from retrofit cost to represent cost of new 240v circuit(s), based on the average cost for ASHP projects involving fuel substitution, per LBNL database. Installation subtractor for new construction derived from [2]." } }, "Non-ducted, multi-zone": { "x1": { "coefficient_low": 1878.0479999999998, "coefficient_mid": 3130.08, "coefficient_high": 4382.111999999999, "metric": "Cooling Capacity", "unit": "Tons", "lower_bound": 1.5, "upper_bound": 5.0 }, "x2": { "coefficient_low": 96.24799999999999, "coefficient_mid": 160.41333333333333, "coefficient_high": 224.57866666666663, "metric": "SEER1", "unit": "Unitless", "lower_bound": 16.0, "upper_bound": 23.0 }, "b": { "int_low": -805.9999999999999, "int_mid": -1343.3333333333333, "int_high": -1880.6666666666665 }, "install": { "new_construction": { "multiplier": 1.5, "adder": -383.1000000000031 }, "retrofit": { "multiplier": 1.5, "adder": 0.0 } }, "lifetime": 15.633333333333333, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Location of equipment", "Need for condensate line/drain", "Condition of existing electrical system", "Need for additional wiring/switching", "Type of equipment", "Incentive programs", "Market maturity", "Contractor experience", "Total project cost can vary significantly based on the complexity of the installation and local market conditions. Like-for-like system replacements that do not require other infrastructure modifications will have lower overall costs. Systems requiring changes to ductwork or electric wiring can significantly increase installed costs. Contractor familiarity with heat pumps and local adoption rates will also contribute to varied pricing among other considerations listed" ], "data_sources": [ "LBNL Regressions, August 2024" ], "qualitative_rank": "High SS, Medium R2, Medium Source Diversity", "notes": "Total project costs derived from LBNL database compiled from incentive program data, include many datapoints from California (TECH) and Massachusetts. Costs were divided by locations multipliers to correct for higher or lower labor and material costs. Retail and installation split backed out using assumed 1.5 ratio between installation cost and retail cost (derived from industry insider conversations) although some Mass. program data suggests this ratio may be as high as 2 in some markets. Low and High ranges assumed to be +/-40% based on previous REMDB ranges, corroborated with typical RMSE values from LBNL regressions. Source data variability (e.g., 1.5 times interquartile range) typically exceeds this range in both directions. Subtracted $1384 from retrofit cost to represent cost of new 240v circuit(s), based on the average cost for ASHP projects involving fuel substitution, per LBNL database. Installation subtractor for new construction derived from [2]." } } } }, "Boiler": { "units": "2023$", "classes": { "Gas (Non-Condensing)": { "x1": { "coefficient_low": 0.013611, "coefficient_mid": 0.01747, "coefficient_high": 0.020046, "metric": "Heating Capacity", "unit": "BTU/hr", "lower_bound": 27000.0, "upper_bound": 416000.0 }, "x2": { "coefficient_low": 425.223582, "coefficient_mid": 774.643544, "coefficient_high": 986.136071, "metric": "AFUE", "unit": "Unitless", "lower_bound": 0.8, "upper_bound": 0.87 }, "b": { "int_low": 505.791013, "int_mid": 922.194681, "int_high": 1150.273551 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 4696.563204646396 }, "retrofit": { "multiplier": 1.0, "adder": 4924.154113737305 } }, "lifetime": 24.4, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "drive time", "local code requirements", "existing construction and materials", "moisture issues present", "condition of existing flue", "need for condensate line/drain", "need to bring in combustion air", "condition of existing electrical system", "condition of existing plumbing", "condition of existing gas line", "presence of hazardous materials", "need for controls and/or zoning" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking", "Homewyse", "LBNL Cost of Decarbonization" ], "qualitative_rank": "High SS, High R2, Medium Source Diversity", "notes": "High AFUE banding at 84%." } }, "Gas (Condensing)": { "x1": { "coefficient_low": 0.02039, "coefficient_mid": 0.030098, "coefficient_high": 0.027623, "metric": "Heating Capacity", "unit": "BTU/hr", "lower_bound": 45000.0, "upper_bound": 387000.0 }, "x2": { "coefficient_low": -206.979502, "coefficient_mid": 51.953272, "coefficient_high": 1208.113017, "metric": "AFUE", "unit": "Unitless", "lower_bound": 0.91, "upper_bound": 0.97 }, "b": { "int_low": 721.149564, "int_mid": 55.150499, "int_high": 1311.335274 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 4007.2213870857536 }, "retrofit": { "multiplier": 1.0, "adder": 4234.812296176663 } }, "lifetime": 24.4, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "drive time", "local code requirements", "existing construction and materials", "moisture issues present", "condition of existing flue", "need for condensate line/drain", "need to bring in combustion air", "condition of existing electrical system", "condition of existing plumbing", "condition of existing gas line", "presence of hazardous materials", "need for controls and/or zoning" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking", "Homewyse", "LBNL Cost of Decarbonization" ], "qualitative_rank": "High SS, Medium R2, Medium Source Diversity", "notes": "High AFUE banding at 95%." } }, "Oil": { "x1": { "coefficient_low": 0.013617, "coefficient_mid": 0.01846, "coefficient_high": 0.020154, "metric": "Heating Capacity", "unit": "BTU/hr", "lower_bound": 27000.0, "upper_bound": 416000.0 }, "x2": { "coefficient_low": 616.573652, "coefficient_mid": -1045.493295, "coefficient_high": 13306.888083, "metric": "AFUE", "unit": "Unitless", "lower_bound": 0.8, "upper_bound": 0.95 }, "b": { "int_low": 713.308438, "int_mid": 2081.539778, "int_high": -9055.606319 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 3450.345404851384 }, "retrofit": { "multiplier": 1.0, "adder": 4040.345404851384 } }, "lifetime": 24.4, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "drive time", "local code requirements", "existing construction and materials", "moisture issues present", "condition of existing flue", "need for condensate line/drain", "need to bring in combustion air", "condition of existing electrical system", "condition of existing plumbing", "condition of existing gas line", "presence of hazardous materials", "need for controls and/or zoning" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking", "Homewyse", "LBNL Cost of Decarbonization" ], "qualitative_rank": "High SS, Medium R2, Low Source Diversity", "notes": "" } } } }, "Duct": { "units": "2023$/sqft", "classes": { "Duct Insulation": { "x1": { "coefficient_low": 0.250999, "coefficient_mid": 0.163885, "coefficient_high": 0.041077, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.1, "upper_bound": 8.0 }, "b": { "int_low": 0.156496, "int_mid": 1.169445, "int_high": 2.463614 }, "install": { "new_construction": { "multiplier": 3.5755627479132697, "adder": 0.0 }, "retrofit": { "multiplier": 3.58, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Nature/size of leaks", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means" ], "qualitative_rank": "Low SS, Medium R2, Low Source Diversity", "notes": "" } }, "Duct Sealing": { "x1": { "coefficient_low": 0.151667, "coefficient_mid": 0.298588, "coefficient_high": 0.706723, "metric": "Leakage Reduction", "unit": "Percent", "lower_bound": 0.0, "upper_bound": 0.97 }, "b": { "int_low": 0.195588, "int_mid": 0.375685, "int_high": 0.745185 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.0 }, "retrofit": { "multiplier": 1.0, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Nature/size of leaks", "Crawlspace height" ], "data_sources": [ "LBNL Cost of Decarbonization" ], "qualitative_rank": "Data inflated to 2023. High SS, Low R2", "notes": "Regression based on total installed cost" } } } }, "Electric Baseboard": { "units": "2023$", "classes": { "All": { "x1": { "coefficient_low": 0.034056176, "coefficient_mid": 0.056760293333333336, "coefficient_high": 0.07946441066666667, "metric": "Capacity", "unit": "BTU/Hr", "lower_bound": 1194.2, "upper_bound": 416000.0 }, "b": { "int_low": 0.0, "int_mid": 0.0, "int_high": 0.0 }, "install": { "new_construction": { "multiplier": 1.5, "adder": 0.0 }, "retrofit": { "multiplier": 1.5, "adder": 0.0 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Condition of existing electrical system", "Need for additional wiring/switching", "Presence of hazardous materials", "Need for controls and/or zoning" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse", "Wilson et al. 2024. https://doi.org/10.1016/j.joule.2024.01.022 " ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "Uses previous REMDB relationship vs. capacity with zero intercept, inflated using HVAC PPI (1.436 from 2019.01$ to 2023.12$. Agrees with relationship from [1,2,4] for individual baseboard heaters but allows scaling up for whole-hole costing. Installation multiplier set to 1.5 for consistency with other HVAC categories. Low and High ranges assumed to be +/-30% based on previous REMDB ranges." } } } }, "Furnaces": { "units": "2023$", "classes": { "Gas Furnace": { "x1": { "coefficient_low": 0.004744, "coefficient_mid": 0.00645, "coefficient_high": 0.01105, "metric": "Heating Capacity", "unit": "BTU/Hr", "lower_bound": 30000.0, "upper_bound": 156250.0 }, "x2": { "coefficient_low": 3309.827024, "coefficient_mid": 4325.000025, "coefficient_high": 4862.6875, "metric": "AFUE", "unit": "Unitless", "lower_bound": 0.8, "upper_bound": 0.97 }, "b": { "int_low": -2009.224953, "int_mid": -2780.000019, "int_high": -2910.150001 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 2025.603 }, "retrofit": { "multiplier": 1.0, "adder": 2217.753 } }, "lifetime": 21.4, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Need for additional wiring/switching", "Condition of existing gas line", "Presence of hazardous materials", "Stand alone vs treating both heating/cooling", "Need for controls and/or zoning", "Condition of existing duct system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse", "LBNL Cost of Decarbonization" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "Significant banding based on efficiency" } } } }, "Ground Source Heat Pump": { "units": "2023$/ton", "classes": { "GSHP": { "x1": { "coefficient_low": 0.0, "coefficient_mid": 0.0, "coefficient_high": 0.0, "metric": "Cooling Capacity", "unit": "Tons", "lower_bound": 3.0, "upper_bound": 6.0 }, "b": { "int_low": 5922.08, "int_mid": 9630.59, "int_high": 13339.1 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 1037.13 }, "retrofit": { "multiplier": 1.0, "adder": 1121.81 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Location of equipment", "Need for condensate line/drain", "Condition of existing electrical system", "Extent of preparation", "Condition of existing duct system", "Type of equipment", "Market maturity", "Contractor experience", "Total project cost can vary significantly based on the complexity of the installation and local market conditions. Like-for-like system replacements that do not require other infrastructure modifications will have lower overall costs. Systems requiring changes to ductwork or electric wiring can significantly increase installed costs. Contractor familiarity with heat pumps and local adoption rates will also contribute to varied pricing among other considerations listed" ], "data_sources": [ "EIA", "Home Guide" ], "qualitative_rank": "Low SS, Medium R2, Medium Source Diversity", "notes": "Regression based on total installed cost. Verified using crowdsourced quote survey, filtered to remove partial replacement situations (https://www.reddit.com/r/geothermal/comments/118glok/geothermal_heat_pump_quote_and_informational/)" } } } }, "Thermostat": { "units": "2023$", "classes": { "Manual": { "b": { "int_low": 25.0, "int_mid": 32.0, "int_high": 50.0 }, "install": { "new_construction": { "multiplier": 2.209961685823755, "adder": 0.0 }, "retrofit": { "multiplier": 2.2329501915708816, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Need for additional wiring/switching", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } }, "Digital Non-Programmable": { "b": { "int_low": 21.0, "int_mid": 44.0, "int_high": 115.0 }, "install": { "new_construction": { "multiplier": 2.209961685823755, "adder": 0.0 }, "retrofit": { "multiplier": 2.2329501915708816, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Need for additional wiring/switching", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } }, "Digital Programmable": { "b": { "int_low": 30.0, "int_mid": 54.0, "int_high": 158.5 }, "install": { "new_construction": { "multiplier": 2.209961685823755, "adder": 0.0 }, "retrofit": { "multiplier": 2.2329501915708816, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Need for additional wiring/switching", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } }, "Smart": { "b": { "int_low": 100.0, "int_mid": 150.0, "int_high": 252.39999999999998 }, "install": { "new_construction": { "multiplier": 2.209961685823755, "adder": 0.0 }, "retrofit": { "multiplier": 2.2329501915708816, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Need for additional wiring/switching", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } } } } }, "Airflow": { "Air Sealing": { "units": "2023$/sqft", "classes": { "<40% Reduction": { "x1": { "coefficient_low": 0.48045, "coefficient_mid": 0.894236, "coefficient_high": 1.333659, "metric": "Leakage Reduction", "unit": "Percent", "lower_bound": 0.03, "upper_bound": 0.4 }, "b": { "int_low": 0.140081, "int_mid": 0.227373, "int_high": 0.457668 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.0 }, "retrofit": { "multiplier": 1.0, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "drive time", "local code requirements", "attic height", "roof slope", "access", "presence/condition/type of existing insulation", "existing construction and materials", "adequacy of existing ventilation", "presence of hazardous materials", "nature/size of leaks" ], "data_sources": [ "LBNL Cost of Decarbonization" ], "qualitative_rank": "Data inflated to 2023. High SS, Low R2", "notes": "Regression based on total installed cost" } }, ">40% Reduction": { "x1": { "coefficient_low": 0.107294, "coefficient_mid": 0.867979, "coefficient_high": 0.785978, "metric": "Leakage Reduction", "unit": "Percent", "lower_bound": 0.4, "upper_bound": 0.92 }, "b": { "int_low": 0.252077, "int_mid": 0.297935, "int_high": 0.874814 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.0 }, "retrofit": { "multiplier": 1.0, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "drive time", "local code requirements", "attic height", "roof slope", "access", "presence/condition/type of existing insulation", "existing construction and materials", "adequacy of existing ventilation", "presence of hazardous materials", "nature/size of leaks" ], "data_sources": [ "LBNL Cost of Decarbonization" ], "qualitative_rank": "Data inflated to 2023. Medium SS, Low R2", "notes": "Regression based on total installed cost" } } } }, "Mechanical Ventilation": { "units": "2023$", "classes": { "ERV/HRV": { "x1": { "coefficient_low": 270.135592, "coefficient_mid": -841.455332, "coefficient_high": -3099.815742, "metric": "Sensible Recovery Efficiency", "unit": "Unitless", "lower_bound": 0.54, "upper_bound": 0.88 }, "x2": { "coefficient_low": 3.537005, "coefficient_mid": 5.330356, "coefficient_high": 13.958345, "metric": "Max Airflow", "unit": "CFM", "lower_bound": 35.3, "upper_bound": 700.0 }, "b": { "int_low": 197.213329, "int_mid": 1156.434757, "int_high": 2422.855339 }, "install": { "new_construction": { "multiplier": 1.7795161901155083, "adder": 0.0 }, "retrofit": { "multiplier": 1.8701950388184054, "adder": 0.0 } }, "lifetime": 19.4, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Condition of existing flue", "Condition of existing electrical system", "Need for additional wiring/switching", "Adequacy of existing ventilation", "Presence of hazardous materials", "Condition of existing duct system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } } } } }, "Electrical": { "Battery": { "units": "2023$", "classes": { "Electric": { "x1": { "coefficient_low": 587.180778, "coefficient_mid": 1017.195523, "coefficient_high": 2515.161289, "metric": "Energy Capacity ", "unit": "kWh", "lower_bound": 2.0, "upper_bound": 20.0 }, "b": { "int_low": -821.741739, "int_mid": -1180.552986, "int_high": -2328.225802 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 2500.0 }, "retrofit": { "multiplier": 1.0, "adder": 2500.0 } }, "lifetime": 10.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing electrical system" ], "data_sources": [ "Retail/Distributor Websites", "DOE Rulemaking", "Home Guide" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "Installation cost is not expected to scale with battery capacity." } } } }, "EV Charger": { "units": "2023$", "classes": { "Electric": { "x1": { "coefficient_low": 20.265154, "coefficient_mid": 53.011574, "coefficient_high": 52.083333, "metric": "kW", "unit": "kW", "lower_bound": 1.65, "upper_bound": 14.4 }, "b": { "int_low": 38.171808, "int_mid": 12.861112, "int_high": 148.999999 }, "install": { "new_construction": { "multiplier": 1.8574391975746523, "adder": 0.0 }, "retrofit": { "multiplier": 1.86, "adder": 0.0 } }, "lifetime": 10.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing electrical system", "Need for additional wiring/switching" ], "data_sources": [ "Retail/Distributor Websites" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "No retrofit scenario, relatively new product market and removal costs are not available." } } } }, "Electric Panel": { "units": "2023$", "classes": { "100A": { "b": { "int_low": 77.44200000000001, "int_mid": 114.0, "int_high": 154.80000000000004 }, "install": { "new_construction": { "multiplier": 6.6290575025518885, "adder": 0.0 }, "retrofit": { "multiplier": 6.6290575025518885, "adder": 0.0 } }, "lifetime": 40.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing electrical system", "Need for additional wiring/switching" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse", "Contractor Interview" ], "qualitative_rank": "Medium SS, Medium R2, No Clear Sources", "notes": "" } }, "200A": { "b": { "int_low": 152.20000000000002, "int_mid": 225.08999999999997, "int_high": 470.738 }, "install": { "new_construction": { "multiplier": 6.6290575025518885, "adder": 0.0 }, "retrofit": { "multiplier": 6.6290575025518885, "adder": 0.0 } }, "lifetime": 40.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing electrical system", "Need for additional wiring/switching" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse", "Contractor Interview" ], "qualitative_rank": "Medium SS, Medium R2, No Clear Sources", "notes": "" } } } }, "Solar PV": { "units": "2023$/Watt", "classes": { "All": { "x1": { "coefficient_low": -1.8e-05, "coefficient_mid": -9.1e-05, "coefficient_high": -0.000162, "metric": "Power", "unit": "Wattage", "lower_bound": 880.0, "upper_bound": 14080.0 }, "b": { "int_low": 1.126802, "int_mid": 2.200001, "int_high": 3.923317 }, "install": { "new_construction": { "multiplier": 2.0220303295194677, "adder": 0.0 }, "retrofit": { "multiplier": 2.0220303295194677, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing electrical system", "Need for additional wiring/switching" ], "data_sources": [ "Retail/Distributor Websites", "LBNL Cost of Decarbonization", "Energy Sage" ], "qualitative_rank": "Medium SS, Medium R2, Medium Source Diversity", "notes": "" } } } } }, "Walls": { "CMU": { "units": "2023$/sqft", "classes": { "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.0416, "coefficient_high": 0.049167, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158332, "int_mid": 0.2392, "int_high": 1.574998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5860975609756099 }, "retrofit": { "multiplier": 1.0, "adder": 0.75609756097561 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.47875 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } } } }, "Double Wood Stud": { "units": "2023$/sqft", "classes": { "Loose Fill": { "x1": { "coefficient_low": 0.003619, "coefficient_mid": 0.00704, "coefficient_high": 0.001017, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.78, "upper_bound": 38.0 }, "b": { "int_low": 0.156253, "int_mid": 0.278882, "int_high": 0.955934 }, "install": { "new_construction": { "multiplier": 1.730578512396694, "adder": 0.0 }, "retrofit": { "multiplier": 1.8099173553719006, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Low R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Exterior Finish": { "units": "2023$/sqft", "classes": { "Aluminum": { "b": { "int_low": 1.075, "int_mid": 1.125, "int_high": 24.94 }, "install": { "new_construction": { "multiplier": 3.2496900570295066, "adder": 0.0 }, "retrofit": { "multiplier": 3.5444954128440367, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Medium Source Diversity", "notes": "" } }, "Brick Veneer": { "b": { "int_low": 4.49, "int_mid": 11.40548, "int_high": 15.99733 }, "install": { "new_construction": { "multiplier": 2.7232002983961205, "adder": 0.0 }, "retrofit": { "multiplier": 2.858808280492353, "adder": 0.0 } }, "lifetime": 50.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, High Source Diversity", "notes": "" } }, "Cement": { "b": { "int_low": 4.864377, "int_mid": 11.35688, "int_high": 25.30971 }, "install": { "new_construction": { "multiplier": 3.129598145285935, "adder": 0.0 }, "retrofit": { "multiplier": 3.4105602782071096, "adder": 0.0 } }, "lifetime": 50.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Low Source Diversity", "notes": "" } }, "Composite": { "b": { "int_low": 3.961615, "int_mid": 11.7383, "int_high": 20.61053 }, "install": { "new_construction": { "multiplier": 2.9039934743189955, "adder": 0.0 }, "retrofit": { "multiplier": 3.1343956893133624, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. High SS, Low Source Diversity", "notes": "" } }, "Stucco": { "b": { "int_low": 1.7060004347826092, "int_mid": 2.2286956521739127, "int_high": 2.613739130434782 }, "install": { "new_construction": { "multiplier": 2.756723910171731, "adder": 0.0 }, "retrofit": { "multiplier": 2.948832232496698, "adder": 0.0 } }, "lifetime": 65.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } }, "Vinyl": { "b": { "int_low": 4.465502, "int_mid": 6.976753, "int_high": 14.02597 }, "install": { "new_construction": { "multiplier": 3.8123706319249973, "adder": 0.0 }, "retrofit": { "multiplier": 4.261254622004909, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Medium Source Diversity", "notes": "" } }, "Wood": { "b": { "int_low": 1.815119, "int_mid": 8.113636, "int_high": 30.92857 }, "install": { "new_construction": { "multiplier": 2.6602632137550417, "adder": 0.0 }, "retrofit": { "multiplier": 2.852086871152622, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Existing construction and materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Medium Source Diversity", "notes": "" } } } }, "ICF": { "units": "2023$/sqft", "classes": { "Insulating Form": { "b": { "int_low": 4.343, "int_mid": 6.3125, "int_high": 12.99 }, "install": { "new_construction": { "multiplier": 1.19, "adder": 0.0 }, "retrofit": { "multiplier": 1.19, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "RS Means" ], "qualitative_rank": "No regression ran. Small SS, Medium Source Diversity", "notes": "Assumes an R-23 ICF product" } } } }, "Rim Joist": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.0416, "coefficient_high": 0.049167, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158332, "int_mid": 0.2392, "int_high": 1.574998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5860975609756099 }, "retrofit": { "multiplier": 1.0, "adder": 0.75609756097561 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.47875 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } } } }, "Structural Insulated Panel": { "units": "2023$/sqft", "classes": { "All": { "x1": { "coefficient_low": 0.11, "coefficient_mid": 0.07375, "coefficient_high": 0.061212, "metric": "R-Value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 12.0, "upper_bound": 46.0 }, "b": { "int_low": 3.070003, "int_mid": 7.960002, "int_high": 8.531817 }, "install": { "new_construction": { "multiplier": 1.112830510539783, "adder": 0.0 }, "retrofit": { "multiplier": 1.11, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "RS Means" ], "qualitative_rank": "Medium SS, Medium R2, Medium Source Diversity", "notes": "Low quantity of retailer diversity" } } } }, "Wall Sheathing": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Drywall": { "b": { "int_low": 0.377, "int_mid": 0.48614583333333333, "int_high": 0.7150000000000009 }, "install": { "new_construction": { "multiplier": 2.0, "adder": 0.0 }, "retrofit": { "multiplier": 2.1842105263157894, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, High Source Diversity", "notes": "" } }, "OSB": { "b": { "int_low": 0.615, "int_mid": 0.78, "int_high": 1.041565081818213 }, "install": { "new_construction": { "multiplier": 2.0, "adder": 0.0 }, "retrofit": { "multiplier": 2.820945945945946, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, High Source Diversity", "notes": "" } }, "Plywood": { "b": { "int_low": 0.70625, "int_mid": 2.113125, "int_high": 4.3725 }, "install": { "new_construction": { "multiplier": 2.0, "adder": 0.0 }, "retrofit": { "multiplier": 2.6764091858037578, "adder": 0.0 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.47875 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } } } }, "Wood/Steel Stud": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.0416, "coefficient_high": 0.049167, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158332, "int_mid": 0.2392, "int_high": 1.574998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5860975609756099 }, "retrofit": { "multiplier": 1.0, "adder": 0.75609756097561 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Loose Fill": { "x1": { "coefficient_low": 0.003619, "coefficient_mid": 0.00704, "coefficient_high": 0.001017, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.78, "upper_bound": 38.0 }, "b": { "int_low": 0.156253, "int_mid": 0.278882, "int_high": 0.955934 }, "install": { "new_construction": { "multiplier": 1.730578512396694, "adder": 0.0 }, "retrofit": { "multiplier": 1.8099173553719006, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Low R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.47875 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } } }, "Appliances & Fixtures": { "Clothes Dryer": { "units": "2023$", "classes": { "Electric": { "x1": { "coefficient_low": 37.5, "coefficient_mid": -42.857155, "coefficient_high": -252.666666, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 5.9, "upper_bound": 8.8 }, "x2": { "coefficient_low": 925.0, "coefficient_mid": 1385.714315, "coefficient_high": 2273.999997, "metric": "Combined Energy Factor", "unit": "lbs/kWh", "lower_bound": 3.73, "upper_bound": 3.94 }, "b": { "int_low": -3214.750003, "int_mid": -4140.714313, "int_high": -5564.353325 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 108.99641577060933 }, "retrofit": { "multiplier": 1.0, "adder": 155.01712465153327 } }, "lifetime": 22.33333333, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing flue", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Energy Star", "DOE CCMS Database" ], "qualitative_rank": "High SS, Low R2, Medium Source Diversity", "notes": "High banding for volume 7-8 cu. ft." } }, "Heat Pump": { "x1": { "coefficient_low": 45.900353, "coefficient_mid": 34.365975, "coefficient_high": -101.360465, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 3.88, "upper_bound": 7.8 }, "x2": { "coefficient_low": 20.923238, "coefficient_mid": -4.667487, "coefficient_high": 160.088867, "metric": "Combined Energy Factor", "unit": "lbs/kWh", "lower_bound": 2.68, "upper_bound": 11.0 }, "b": { "int_low": 571.309796, "int_mid": 1295.695475, "int_high": 1844.811821 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 178.6330147351653 }, "retrofit": { "multiplier": 1.0, "adder": 178.6330147351653 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing flue", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Energy Star", "DOE CCMS Database" ], "qualitative_rank": "Low SS, Low R2, Medium Source Diversity", "notes": "" } }, "Gas": { "x1": { "coefficient_low": 71.678322, "coefficient_mid": 170.121951, "coefficient_high": 389.289827, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 6.2, "upper_bound": 9.0 }, "x2": { "coefficient_low": 751.74825, "coefficient_mid": 609.756101, "coefficient_high": 898.848366, "metric": "Combined Energy Factor", "unit": "lbs/kWh", "lower_bound": 3.3, "upper_bound": 3.49 }, "b": { "int_low": -2398.853141, "int_mid": -2488.951231, "int_high": -4680.796536 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 125.95141377937078 }, "retrofit": { "multiplier": 1.0, "adder": 198.615690959777 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing flue", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Energy Star", "DOE CCMS Database" ], "qualitative_rank": "Medium SS, High R2, Low Source Diversity", "notes": "" } } } }, "Clothes Dryer (Compact)": { "units": "2023$", "classes": { "Electric": { "x1": { "coefficient_low": -40.691058, "coefficient_mid": 112.665685, "coefficient_high": 277.021196, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 3.4, "upper_bound": 5.5 }, "x2": { "coefficient_low": 391.463416, "coefficient_mid": 388.316158, "coefficient_high": 366.51613, "metric": "Combined Energy Factor", "unit": "lbs/kWh", "lower_bound": 2.68, "upper_bound": 3.93 }, "b": { "int_low": 11.642277, "int_mid": 419.242, "int_high": -789.003776 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 108.99641577060933 }, "retrofit": { "multiplier": 1.0, "adder": 155.01712465153327 } }, "lifetime": 22.33333333, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Condition of existing flue", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse", "Energy Star", "DOE CCMS Database" ], "qualitative_rank": "Low SS, Low R2, Medium Source Diversity", "notes": "" } } } }, "Clothes Washer": { "units": "2023$", "classes": { "Front Load": { "x1": { "coefficient_low": -4.52518, "coefficient_mid": 47.559555, "coefficient_high": -53.467828, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 1.0, "upper_bound": 6.0 }, "x2": { "coefficient_low": 1.706078, "coefficient_mid": 0.77014, "coefficient_high": 10.656917, "metric": "Annual Energy Consumption", "unit": "kWh/yr", "lower_bound": 50.0, "upper_bound": 158.0 }, "b": { "int_low": 550.160477, "int_mid": 718.520048, "int_high": 510.304371 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 201.715926199262 }, "retrofit": { "multiplier": 1.0, "adder": 427.272426199262 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Need for condensate line/drain", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "Medium SS, Low R2, Low Source Diversity", "notes": "" } }, "Top Load": { "x1": { "coefficient_low": 107.461885, "coefficient_mid": 158.581171, "coefficient_high": 147.967936, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 0.78, "upper_bound": 5.5 }, "x2": { "coefficient_low": -0.171442, "coefficient_mid": -0.607975, "coefficient_high": 0.69808, "metric": "Annual Energy Consumption", "unit": "kWh/yr", "lower_bound": 4.56, "upper_bound": 341.0 }, "b": { "int_low": 113.677694, "int_mid": 151.981186, "int_high": 266.203521 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 201.715926199262 }, "retrofit": { "multiplier": 1.0, "adder": 427.272426199262 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Need for condensate line/drain", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, Low Source Diversity", "notes": "" } } } }, "Cooking Range": { "units": "2023$", "classes": { "Electric": { "x1": { "coefficient_low": 27.703333, "coefficient_mid": 127.969233, "coefficient_high": 380.385183, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 1.6, "upper_bound": 7.3 }, "b": { "int_low": 531.172335, "int_mid": 588.183837, "int_high": 691.373706 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 143.71 }, "retrofit": { "multiplier": 1.0, "adder": 279.36 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Access", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "High SS, Low R2, Low Source Diversity", "notes": "High banding for 30 in." } }, "Induction": { "x1": { "coefficient_low": 1048.888889, "coefficient_mid": 49.0, "coefficient_high": 107.142857, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 4.6, "upper_bound": 6.7 }, "b": { "int_low": -4359.999998, "int_mid": 3139.300003, "int_high": 3881.142857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 143.71 }, "retrofit": { "multiplier": 1.0, "adder": 279.36 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Access", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "Low SS, Low R2, Low Source Diversity", "notes": "Metrics don't appear to scale with cost." } }, "Gas": { "x1": { "coefficient_low": 111.854839, "coefficient_mid": 674.418603, "coefficient_high": 635.555556, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 1.9, "upper_bound": 8.6 }, "b": { "int_low": 326.870969, "int_mid": -452.162787, "int_high": 1533.222221 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 218.3 }, "retrofit": { "multiplier": 1.0, "adder": 353.95000000000005 } }, "lifetime": 11.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Access", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, Low Source Diversity", "notes": "" } } } }, "Dishwasher": { "units": "2023$", "classes": { "All": { "x1": { "coefficient_low": -4.6, "coefficient_mid": -4.650794, "coefficient_high": 5.315789, "metric": "Annual Energy Consumption", "unit": "kWh/yr", "lower_bound": 234.0, "upper_bound": 270.0 }, "x2": { "coefficient_low": 31.0, "coefficient_mid": 54.825397, "coefficient_high": 47.255639, "metric": "Number of Place Settings", "unit": "Unitless", "lower_bound": 8.0, "upper_bound": 16.0 }, "b": { "int_low": 1256.000008, "int_mid": 1132.507961, "int_high": -981.308261 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 199.66 }, "retrofit": { "multiplier": 1.0, "adder": 377.65999999999997 } }, "lifetime": 15.2, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Need for condensate line/drain", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "DOE Rulemaking", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, Medium Source Diversity", "notes": "High banding at 270 kWh/yr due to Energy Star requirements." } } } }, "Refrigerator": { "units": "2023$", "classes": { "French Door": { "x1": { "coefficient_low": -25.788389, "coefficient_mid": -63.262196, "coefficient_high": -16.358227, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 17.7, "upper_bound": 43.0 }, "x2": { "coefficient_low": 4.368317, "coefficient_mid": 8.084433, "coefficient_high": 2.274377, "metric": "Energy Consumption", "unit": "kWh/yr", "lower_bound": 321.0, "upper_bound": 807.0 }, "b": { "int_low": -337.217968, "int_mid": -641.509319, "int_high": 3437.744948 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 194.49810810810814 }, "retrofit": { "multiplier": 1.0, "adder": 420.10560810810813 } }, "lifetime": 14.6, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Access", "Need for condensate line/drain", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse", "LBNL Cost of Decarbonization" ], "qualitative_rank": "High SS, Low R2, Medium Source Diversity", "notes": "" } }, "Non-French Door": { "x1": { "coefficient_low": -1.814746, "coefficient_mid": -18.678773, "coefficient_high": -68.031179, "metric": "Volume", "unit": "Cubic ft", "lower_bound": 5.5, "upper_bound": 45.1 }, "x2": { "coefficient_low": 1.777358, "coefficient_mid": 2.839424, "coefficient_high": 7.41246, "metric": "Energy Consumption", "unit": "kWh/yr", "lower_bound": 115.0, "upper_bound": 885.0 }, "b": { "int_low": 6.341499, "int_mid": 222.770457, "int_high": 789.671083 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 194.49810810810814 }, "retrofit": { "multiplier": 1.0, "adder": 420.10560810810813 } }, "lifetime": 16.8, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Access", "Need for condensate line/drain", "Condition of existing electrical system", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse", "LBNL Cost of Decarbonization" ], "qualitative_rank": "High SS, Medium R2, Medium Source Diversity", "notes": "" } } } } }, "Foundation/Floors": { "Crawlspace (Ceiling)": { "units": "2023$/sqft", "classes": { "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.043, "coefficient_high": 0.052, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158334, "int_mid": 0.263004, "int_high": 1.558037 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 1.0440385120756885 }, "retrofit": { "multiplier": 1.0, "adder": 1.2648928127070842 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.687869, "int_mid": 1.360557, "int_high": 3.705401 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Crawlspace (Wall)": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5911100399252059 }, "retrofit": { "multiplier": 1.0, "adder": 0.6820500460675454 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.0416, "coefficient_high": 0.049167, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158332, "int_mid": 0.2392, "int_high": 1.574998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.7614245113590299 }, "retrofit": { "multiplier": 1.0, "adder": 0.9822788119904255 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5911100399252059 }, "retrofit": { "multiplier": 1.0, "adder": 0.6820500460675454 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.687869, "int_mid": 1.360557, "int_high": 3.705401 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.53 }, "retrofit": { "multiplier": 1.0, "adder": 0.62 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparationAccommodation for termite inspections", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } } } }, "Finished Basement (Ceiling)": { "units": "2023$/sqft", "classes": { "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.043, "coefficient_high": 0.052, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158334, "int_mid": 0.263004, "int_high": 1.558037 }, "install": { "new_construction": { "multiplier": 1.7148913619501853, "adder": 0.8036363636363637 }, "retrofit": { "multiplier": 1.8060413354531, "adder": 1.3636363636363638 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "Retrofit contains additional fixed cost of $0.39 per square feet for removal of existing drywall" } }, "Loose Fill": { "x1": { "coefficient_low": 0.008696, "coefficient_mid": 0.017857, "coefficient_high": 0.011494, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.78, "upper_bound": 49.0 }, "b": { "int_low": 0.136956, "int_mid": 0.135715, "int_high": 0.616746 }, "install": { "new_construction": { "multiplier": 1.7148913619501853, "adder": 0.0 }, "retrofit": { "multiplier": 1.8060413354531, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.136956, "int_mid": 0.135715, "int_high": 0.616746 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Finished Basement (Wall)": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.915 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "Retrofit contains additional fixed cost of $0.39 per square feet for removal of existing drywall" } }, "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.0416, "coefficient_high": 0.049167, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158332, "int_mid": 0.2392, "int_high": 1.574998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5860975609756099 }, "retrofit": { "multiplier": 1.0, "adder": 1.14609756097561 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "Retrofit contains additional fixed cost of $0.39 per square feet for removal of existing drywall" } }, "Loose Fill": { "x1": { "coefficient_low": 0.003619, "coefficient_mid": 0.00704, "coefficient_high": 0.001017, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.78, "upper_bound": 38.0 }, "b": { "int_low": 0.156253, "int_mid": 0.278882, "int_high": 0.955934 }, "install": { "new_construction": { "multiplier": 1.730578512396694, "adder": 0.0 }, "retrofit": { "multiplier": 1.8099173553719006, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Low R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.915 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "Retrofit contains additional fixed cost of $0.39 per square feet for removal of existing drywall" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.87 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "Retrofit contains additional fixed cost of $0.39 per square feet for removal of existing drywall" } } } }, "Slab": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Perimeter excavation needs" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Perimeter excavation needs" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.47875 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Adequacy of existing ventilation", "Presence of hazardous materials", "Extent of preparation", "Perimeter excavation needs" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } } } } }, "Windows & Doors": { "Door": { "units": "2023$/sqft", "classes": { "Exterior Prehung, Fiberglass": { "b": { "int_low": 37.8635, "int_mid": 55.491, "int_high": 55.491 }, "install": { "new_construction": { "multiplier": 2.38968748147082, "adder": 0.0 }, "retrofit": { "multiplier": 2.6632582560981044, "adder": 0.0 } }, "lifetime": 50.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Existing construction and materials", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. High SS, Low Source Diversity", "notes": "" } }, "Exterior Prehung, Metal": { "b": { "int_low": 15.88771, "int_mid": 41.99423, "int_high": 80.78463 }, "install": { "new_construction": { "multiplier": 2.3896874814708235, "adder": 0.0 }, "retrofit": { "multiplier": 2.6632582560981044, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Existing construction and materials", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. High SS, Low Source Diversity", "notes": "" } }, "Exterior Prehung, Wood": { "b": { "int_low": 55.97036, "int_mid": 77.2875, "int_high": 119.0682 }, "install": { "new_construction": { "multiplier": 2.3896874814708235, "adder": 0.0 }, "retrofit": { "multiplier": 2.6632582560981044, "adder": 0.0 } }, "lifetime": 70.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Existing construction and materials", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Low Source Diversity", "notes": "" } }, "Sliding Patio, Fiberglass": { "b": { "int_low": 18.82, "int_mid": 32.95, "int_high": 46.05 }, "install": { "new_construction": { "multiplier": 2.3896874814708235, "adder": 0.0 }, "retrofit": { "multiplier": 2.6632582560981044, "adder": 0.0 } }, "lifetime": 100.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Existing construction and materials", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Low SS, Low Source Diversity", "notes": "" } }, "Sliding Patio, Vinyl": { "b": { "int_low": 23.77688, "int_mid": 62.45, "int_high": 98.89829 }, "install": { "new_construction": { "multiplier": 2.3896874814708235, "adder": 0.0 }, "retrofit": { "multiplier": 2.6632582560981044, "adder": 0.0 } }, "lifetime": 100.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Existing construction and materials", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Low SS, Low Source Diversity", "notes": "" } }, "Sliding Patio, Wood": { "b": { "int_low": 47.24416, "int_mid": 76.25532, "int_high": 103.2107 }, "install": { "new_construction": { "multiplier": 2.3896874814708235, "adder": 0.0 }, "retrofit": { "multiplier": 2.6632582560981044, "adder": 0.0 } }, "lifetime": 30.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Existing construction and materials", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Low SS, Low Source Diversity", "notes": "" } } } }, "Window": { "units": "2023$/sqft", "classes": { "Vinyl": { "b": { "int_low": 24.954681440443213, "int_mid": 54.113275397063234, "int_high": 113.34530109053355 }, "install": { "new_construction": { "multiplier": 1.3137878070264744, "adder": 0.0 }, "retrofit": { "multiplier": 1.6725950404784211, "adder": 0.0 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Low Source Diversity", "notes": "Not a strong correlation between U-factor, number of panes, and costs" } }, "Metal": { "b": { "int_low": 112.075, "int_mid": 206.565, "int_high": 401.50000000000006 }, "install": { "new_construction": { "multiplier": 1.3137878070264744, "adder": 0.0 }, "retrofit": { "multiplier": 1.6725950404784211, "adder": 0.0 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Medium SS, Low Source Diversity", "notes": "Not a strong correlation between U-factor, number of panes, and costs" } }, "Storm": { "b": { "int_low": 8.97, "int_mid": 21.041666666666664, "int_high": 26.54048780487805 }, "install": { "new_construction": { "multiplier": 1.1456873315363882, "adder": 0.0 }, "retrofit": { "multiplier": 1.2228370223542624, "adder": 0.0 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Extent of preparation" ], "data_sources": [ "Retail/Distributor Websites", "Homewyse" ], "qualitative_rank": "No regression ran. Low SS, Low Source Diversity", "notes": "Not a strong correlation between U-factor, number of panes, and costs" } } } } }, "Ceilings/Roofs": { "Finished Roof": { "units": "2023$/sqft", "classes": { "Loose Fill": { "x1": { "coefficient_low": 0.008696, "coefficient_mid": 0.017857, "coefficient_high": 0.011494, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.78, "upper_bound": 49.0 }, "b": { "int_low": 0.136956, "int_mid": 0.135715, "int_high": 0.616746 }, "install": { "new_construction": { "multiplier": 1.71, "adder": 0.0 }, "retrofit": { "multiplier": 1.81, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Moisture issues present", "Condition of existing electrical system", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Moisture issues present", "Condition of existing electrical system", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Moisture issues present", "Condition of existing electrical system", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Radiant Barrier": { "units": "2023$/sqft", "classes": { "All": { "b": { "int_low": 0.25096, "int_mid": 0.46167499999999995, "int_high": 0.5635200000000002 }, "install": { "new_construction": { "multiplier": 2.6666666666666665, "adder": 0.0 }, "retrofit": { "multiplier": 2.67, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "Home Guide" ], "qualitative_rank": "No regression ran. Low SS, Medium Source Diversity", "notes": "" } } } }, "Unfinished Attic (Ceiling)": { "units": "2023$/sqft", "classes": { "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.043, "coefficient_high": 0.052, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158334, "int_mid": 0.263004, "int_high": 1.558037 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.8268722672694145 }, "retrofit": { "multiplier": 1.0, "adder": 1.0017875545764061 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Loose Fill": { "x1": { "coefficient_low": 0.008696, "coefficient_mid": 0.017857, "coefficient_high": 0.011494, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.78, "upper_bound": 49.0 }, "b": { "int_low": 0.136956, "int_mid": 0.135715, "int_high": 0.616746 }, "install": { "new_construction": { "multiplier": 1.7148913619501853, "adder": 0.0 }, "retrofit": { "multiplier": 1.8060413354531, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Unfinished Attic (Roof)": { "units": "2023$/sqft", "classes": { "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.043, "coefficient_high": 0.052, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158334, "int_mid": 0.263004, "int_high": 1.558037 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.8268722672694145 }, "retrofit": { "multiplier": 1.0, "adder": 1.0017875545764061 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Existing construction and materials", "Moisture issues present", "Condition of existing electrical systemAdequacy of existing ventilation", "Presence of hazardous materials" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Unfinished Basement (Ceiling)": { "units": "2023$/sqft", "classes": { "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.043, "coefficient_high": 0.052, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158334, "int_mid": 0.263004, "int_high": 1.558037 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.8036363636363637 }, "retrofit": { "multiplier": 1.0, "adder": 0.9736363636363637 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Closed Cell)": { "x1": { "coefficient_low": 0.209286, "coefficient_mid": 0.301055, "coefficient_high": 0.618535, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 5.5, "upper_bound": 42.0 }, "b": { "int_low": 4e-06, "int_mid": 0.031017, "int_high": -0.003062 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.2849420849420852, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Spray Foam (Open Cell)": { "x1": { "coefficient_low": 0.146427, "coefficient_mid": 0.27345, "coefficient_high": 0.42841, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 3.7, "upper_bound": 25.8 }, "b": { "int_low": 0.106369, "int_mid": -0.056142, "int_high": -0.192549 }, "install": { "new_construction": { "multiplier": 1.1366795366795368, "adder": 0.0 }, "retrofit": { "multiplier": 1.285343880465832, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, High R2, High Source Diversity", "notes": "" } } } }, "Unfinished Basement (Wall)": { "units": "2023$/sqft", "classes": { "Rigid Foam (EPS)": { "x1": { "coefficient_low": 0.068808, "coefficient_mid": 0.131428, "coefficient_high": 0.291785, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.44, "upper_bound": 10.0 }, "b": { "int_low": 0.130474, "int_mid": 0.072906, "int_high": 0.042857 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Batt": { "x1": { "coefficient_low": 0.031667, "coefficient_mid": 0.0416, "coefficient_high": 0.049167, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 6.0, "upper_bound": 49.0 }, "b": { "int_low": 0.158332, "int_mid": 0.2392, "int_high": 1.574998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.5860975609756099 }, "retrofit": { "multiplier": 1.0, "adder": 0.75609756097561 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (XPS)": { "x1": { "coefficient_low": 0.123717, "coefficient_mid": 0.1755, "coefficient_high": 0.2285, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.0, "upper_bound": 20.0 }, "b": { "int_low": 0.065725, "int_mid": 0.101252, "int_high": 2.7075 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.455 }, "retrofit": { "multiplier": 1.0, "adder": 0.525 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } }, "Rigid Foam (ISO)": { "x1": { "coefficient_low": 0.026871, "coefficient_mid": 0.101739, "coefficient_high": 0.144589, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 2.7, "upper_bound": 31.0 }, "b": { "int_low": 0.536513, "int_mid": 0.490991, "int_high": 0.670235 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.40875 }, "retrofit": { "multiplier": 1.0, "adder": 0.47875 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Presence of hazardous materials", "Extent of preparation", "Accommodation for termite inspections" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "Homewyse" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } } } } }, "Lighting": { "LED": { "units": "2023$", "classes": { "A-Type": { "x1": { "coefficient_low": 0.003477, "coefficient_mid": 0.007252, "coefficient_high": 0.011657, "metric": "Light Output", "unit": "Lumens", "lower_bound": 300.0, "upper_bound": 3200.0 }, "x2": { "coefficient_low": -0.018401, "coefficient_mid": -0.009768, "coefficient_high": 0.011433, "metric": "Efficacy", "unit": "lm/W", "lower_bound": 50.0, "upper_bound": 165.0 }, "b": { "int_low": 1.787807, "int_mid": 0.91944, "int_high": 8.289098 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.0 }, "retrofit": { "multiplier": 1.0, "adder": 0.0 } }, "lifetime": 18.674219424904358, "meta": { "cost_variation_considerations": [ "Brand recognition", "Additional Features (such as tunable lighting or connectivity)" ], "data_sources": [ "Retail/Distributor Websites" ], "qualitative_rank": "High SS, Low R2, High Source Diversity", "notes": "Assumed no installation labor required" } }, "Decorative": { "x1": { "coefficient_low": 0.00893, "coefficient_mid": 0.013429, "coefficient_high": 0.03445, "metric": "Light Output", "unit": "Lumens", "lower_bound": 50.0, "upper_bound": 2600.0 }, "x2": { "coefficient_low": -0.081078, "coefficient_mid": -0.050358, "coefficient_high": -0.207061, "metric": "Efficacy", "unit": "lm/W", "lower_bound": 50.0, "upper_bound": 162.0 }, "b": { "int_low": 7.438016, "int_mid": 7.159316, "int_high": 24.022479 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.0 }, "retrofit": { "multiplier": 1.0, "adder": 0.0 } }, "lifetime": 21.03223156759902, "meta": { "cost_variation_considerations": [ "Brand recognition", "Additional Features (such as tunable lighting or connectivity)" ], "data_sources": [ "Retail/Distributor Websites" ], "qualitative_rank": "High SS, Low R2, High Source Diversity", "notes": "Assumed no installation labor required" } }, "Downlight": { "x1": { "coefficient_low": 0.013055, "coefficient_mid": 0.035932, "coefficient_high": 0.053185, "metric": "Light Output", "unit": "Lumens", "lower_bound": 302.0, "upper_bound": 5000.0 }, "x2": { "coefficient_low": -0.060959, "coefficient_mid": -0.264645, "coefficient_high": -0.058566, "metric": "Efficacy", "unit": "lm/W", "lower_bound": 50.0, "upper_bound": 170.0 }, "b": { "int_low": 8.516873, "int_mid": 28.630264, "int_high": 87.504891 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 45.0 }, "retrofit": { "multiplier": 1.0, "adder": 45.0 } }, "lifetime": 41.909846430531715, "meta": { "cost_variation_considerations": [ "Brand recognition", "Additional Features (such as tunable lighting or connectivity)" ], "data_sources": [ "Retail/Distributor Websites", "RS Means" ], "qualitative_rank": "High SS, Medium R2, High Source Diversity", "notes": "Assumes 1 hour labor of electrician for installing ceiling recessed fixture" } }, "Reflector": { "x1": { "coefficient_low": 0.004891, "coefficient_mid": 0.01604, "coefficient_high": 0.017804, "metric": "Light Output", "unit": "Lumens", "lower_bound": 200.0, "upper_bound": 4000.0 }, "x2": { "coefficient_low": -0.056589, "coefficient_mid": -0.258954, "coefficient_high": -0.261591, "metric": "Efficacy", "unit": "lm/W", "lower_bound": 50.0, "upper_bound": 170.0 }, "b": { "int_low": 7.227852, "int_mid": 22.66371, "int_high": 33.518947 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 0.0 }, "retrofit": { "multiplier": 1.0, "adder": 0.0 } }, "lifetime": 25.12737554693966, "meta": { "cost_variation_considerations": [ "Brand recognition", "Additional Features (such as tunable lighting or connectivity)" ], "data_sources": [ "Retail/Distributor Websites" ], "qualitative_rank": "High SS, Low R2, High Source Diversity", "notes": "Assumed no installation labor required" } } } } }, "Water Heating": { "Pipe Insulation": { "units": "2023$/sqft", "classes": { "All": { "x1": { "coefficient_low": 0.14163, "coefficient_mid": 0.294776, "coefficient_high": 0.346203, "metric": "R-value", "unit": "ft2\u00b7\u00b0F\u00b7h/BTU", "lower_bound": 1.2, "upper_bound": 17.6 }, "b": { "int_low": 0.804638, "int_mid": 0.990088, "int_high": 2.533318 }, "install": { "new_construction": { "multiplier": 2.282311791501333, "adder": 0.0 }, "retrofit": { "multiplier": 2.282311791501333, "adder": 0.0 } }, "lifetime": 999.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Attic height", "Roof slope", "Access", "Presence/condition/type of existing insulation", "Existing construction and materials", "Moisture issues present", "Presence of hazardous materials", "Nature/size of leaks", "Crawlspace height" ], "data_sources": [ "Retail/Distributor Websites", "RS Means" ], "qualitative_rank": "High SS, Medium R2, Low Source Diversity", "notes": "Retrofit labor is assumed to be the same as new construction" } } } }, "Water Heater": { "units": "2023$", "classes": { "Electric Instantaneous": { "x1": { "coefficient_low": 250.000019, "coefficient_mid": 353.549649, "coefficient_high": 2133.33333, "metric": "UEF", "unit": "Unitless", "lower_bound": 0.84, "upper_bound": 0.998 }, "b": { "int_low": 21.499983, "int_mid": 103.991708, "int_high": -1312.999998 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 788.25 }, "retrofit": { "multiplier": 1.0, "adder": 913.1 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Low SS, Low R2, High Source Diversity", "notes": "" } }, "Electric Storage": { "x1": { "coefficient_low": 571.423485, "coefficient_mid": 10549.499565, "coefficient_high": 19231.034497, "metric": "UEF", "unit": "Unitless", "lower_bound": 0.92, "upper_bound": 0.95 }, "x2": { "coefficient_low": 12.857143, "coefficient_mid": 17.057105, "coefficient_high": 22.275862, "metric": "Nominal volume", "unit": "gallons", "lower_bound": 27.0, "upper_bound": 55.0 }, "b": { "int_low": -425.281029, "int_mid": -9666.090372, "int_high": -17743.20691 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 364.1150985316847 }, "retrofit": { "multiplier": 1.0, "adder": 864.1150985316847 } }, "lifetime": 14.8, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Medium SS, Medium SS, High Source Diversity", "notes": "" } }, "HP Tank": { "x1": { "coefficient_low": 102.325583, "coefficient_mid": 248.326452, "coefficient_high": 888.754967, "metric": "UEF", "unit": "Unitless", "lower_bound": 3.0, "upper_bound": 4.07 }, "x2": { "coefficient_low": 28.81362, "coefficient_mid": 19.331395, "coefficient_high": 8.390563, "metric": "Nominal volume", "unit": "gallons", "lower_bound": 40.0, "upper_bound": 80.0 }, "b": { "int_low": 5.295732, "int_mid": 286.450878, "int_high": -801.897419 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 518.1920401854715 }, "retrofit": { "multiplier": 1.0, "adder": 1018.1920401854715 } }, "lifetime": 14.8, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "" } }, "HP Tank w/ Gas Capping": { "x1": { "coefficient_low": 102.325583, "coefficient_mid": 248.326452, "coefficient_high": 888.754967, "metric": "UEF", "unit": "Unitless", "lower_bound": 3.0, "upper_bound": 4.07 }, "x2": { "coefficient_low": 28.81362, "coefficient_mid": 19.331395, "coefficient_high": 8.390563, "metric": "Nominal volume", "unit": "gallons", "lower_bound": 40.0, "upper_bound": 80.0 }, "b": { "int_low": 155.295732, "int_mid": 436.450878, "int_high": -651.897419 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 518.1920401854715 }, "retrofit": { "multiplier": 1.0, "adder": 1018.1920401854715 } }, "lifetime": 14.8, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "Gas Cap as adder in Retail Price Intercepts" } }, "HP Tank w/ Gas Capping and 240V Wiring": { "x1": { "coefficient_low": 102.325583, "coefficient_mid": 248.326452, "coefficient_high": 888.754967, "metric": "UEF", "unit": "Unitless", "lower_bound": 3.0, "upper_bound": 4.07 }, "x2": { "coefficient_low": 28.81362, "coefficient_mid": 19.331395, "coefficient_high": 8.390563, "metric": "Nominal volume", "unit": "gallons", "lower_bound": 40.0, "upper_bound": 80.0 }, "b": { "int_low": 455.295732, "int_mid": 736.450878, "int_high": -351.897419 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 518.1920401854715 }, "retrofit": { "multiplier": 1.0, "adder": 1018.1920401854715 } }, "lifetime": 14.8, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Low SS, High R2, High Source Diversity", "notes": "Gas Cap and Wiring as adder in Retail Price Intercepts" } }, "Gas Inst": { "x1": { "coefficient_low": 4192.333369, "coefficient_mid": 3885.583326, "coefficient_high": 4904.999999, "metric": "UEF", "unit": "Unitless", "lower_bound": 0.81, "upper_bound": 0.99 }, "b": { "int_low": -2720.853368, "int_mid": -2098.322494, "int_high": -2467.37 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 722.5600038353082 }, "retrofit": { "multiplier": 1.0, "adder": 847.0100038353082 } }, "lifetime": 20.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Low SS, Medium R2, High Source Diversity", "notes": "" } }, "Gas Storage": { "x1": { "coefficient_low": 5190.140327, "coefficient_mid": 8799.424875, "coefficient_high": 13355.313398, "metric": "UEF", "unit": "Unitless", "lower_bound": 0.58, "upper_bound": 0.75 }, "x2": { "coefficient_low": 13.093509, "coefficient_mid": 13.652049, "coefficient_high": 32.710627, "metric": "Nominal volume", "unit": "gallons", "lower_bound": 38.0, "upper_bound": 98.0 }, "b": { "int_low": -3147.365244, "int_mid": -5066.564344, "int_high": -8122.796216 }, "install": { "new_construction": { "multiplier": 1.0, "adder": 589.7753941267388 }, "retrofit": { "multiplier": 1.0, "adder": 800.929240280585 } }, "lifetime": 14.0, "meta": { "cost_variation_considerations": [ "Prevailing local wages", "Drive time", "Local code requirements", "Access", "Moisture issues present", "Condition of existing flue", "Need to bring in combustion air", "Condition of existing electrical system", "Condition of existing plumbing", "Condition of existing gas line", "Presence of hazardous materials", "Type of equipment" ], "data_sources": [ "Retail/Distributor Websites", "RS Means", "DOE Rulemaking" ], "qualitative_rank": "Medium SS, Medium R2, High Source Diversity", "notes": "" } } } } } }