Replace electric DHW with heat pump DHW 2.3 EF 42 Replace gas storage water heater with instantaneous 0.93 EF 43 Replace gas storage DHW with more efficient gas storage 0.8 EF 39 Replace gas storage DHW with gas condensing 0.9 EF 39 Replace LP storage water heater with instantaneous 0.93 EF 6 Replace LP storage DHW with more efficient LP storage 0.8 EF 4 Replace LP storage water heater with LP condensing 0.9 EF 4 Increase water heater tank wrap R-value R-10 tank wrap 102 Install low-flow showerheads 180 Calculated 2013 HES Program Savings Install faucet aerators 180 Documentation Add DHW pipe insulation 138 A: Lights & Appliances Measure Upgrades (Base: All applicable homes) Sample Measure Upgrade Size Upgrade refrigerator 319 kWh/year 180 Upgrade freezer 188 kWh/year 60 Upgrade dishwasher 1.28 EF, 170 kWh/year 164 Calculated 2013 HES Upgrade clothes washer 177 Program Savings Documentation Upgrade dehumidifier 2.6 EF 49 Increase socket saturation of efficient lighting Increase saturation to 100% 180 A: Heat Pumps & Solar Technologies Measure Upgrades (Base: All applicable homes) Sample Measure Upgrade Value Size Install ground source heat pump 17.1 EER, 3.6 COP 103 Install air source heat pump 22.1 SEER, 11.3 HSPF 104 12.1 EER (19.2 SEER), 3.0 COP (10.3 HSPF) (modeled as Install ductless mini-split 180 GSHP. See Appendix B for details) Add photovoltaic South-facing 7.1 kW system, 35o tilt with 95% inverter 108 Add hot water system 66 s.f., south-facing, double-glazed, liquid indirect system 109 Maximum R-value Achievable by Framing Insulation upgrade values were assigned by determining the maximum R-value achievable with blown-in insulation in the framing found on site. Table A-6 details the insulation upgrade values by framing depth.
Replace electric DHW with heat pump DHW 42 2.3 EF Replace gas storage water heater with instantaneous 43 0.93 EF Replace gas storage DHW with more efficient gas storage 39 0.8 EF Replace gas storage DHW with gas condensing 39 0.9 EF Replace LP storage water heater with instantaneous 6 0.93 EF Replace LP storage DHW with more efficient LP storage 4 0.8 EF Replace LP storage water heater with LP condensing 4 0.9 EF Increase water heater tank wrap R-value 102 R-10 tank wrap Install low-flow showerheads 180 Calculated 2013 HES Program Savings Documentation Install faucet aerators 180 Add DHW pipe insulation 138 A: Lights & Appliances Measure Upgrades (Base: All applicable homes) Measure Sample Size Upgrade Upgrade refrigerator 180 319 kWh/year Upgrade freezer 60 188 kWh/year Upgrade dishwasher 164 1.28 EF, 170 kWh/year Upgrade clothes washer 177 Calculated 2013 HES Program Savings Documentation Upgrade dehumidifier 49 2.6 EF Increase socket saturation of efficient lighting 180 Increase saturation to 100% A: Heat Pumps & Solar Technologies Measure Upgrades (Base: All applicable homes) Measure Sample Size Upgrade Value Install ground source heat pump 103 17.1 EER, 3.6 COP Install air source heat pump 104 22.1 SEER, 11.3 HSPF Install ductless mini-split 180 12.1 EER (19.2 SEER), 3.0 COP (10.3 HSPF) (modeled as GSHP. See Appendix B for details) Add photovoltaic 108 South-facing 7.1 kW system, 35o tilt with 95% inverter Add hot water system 109 66 s.f., south-facing, double-glazed, liquid indirect system Maximum R-value Achievable by Framing Insulation upgrade values were assigned by determining the maximum R-value achievable with blown-in insulation in the framing found on site. Table A-6 details the insulation upgrade values by framing depth.
R15_Single-Family%20Potential%20Study_Review%20Draft_9-05-14.docx