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7.A. - Page 69 of 285 2019 Energy Efficiency Ordinance Cost-effectiveness Study Table 6: Incremental Costs - All -Electric Code Compliant Home Compared to a Mixed Fuel Code Compliant Home Measure Incremental Cost (2020 PV$) Incremental Cost (2020 PV$) Single Family' Multifamily' (Per Dwelling Unit) Low High Typical (On -Bill) Typical (TDV) Low High Typical (On -Bill) Typical (TDV) Heat Pump vs Gas Furnace/Split AC ($2,770) $620 ($221) Same as Single Family Heat Pump Water Heater vs Gas ankless ($1,120) $1,120 $0 Electric vs Gas Clothes Dryer' ($428) $820 $0 Electric vs Gas Cooking' $0 $1,800 $0 Electric Service Upgrade $200 $800 $600 $150 $600 $600 In -House Gas Infrastructure ($1,670) ($550) ($800) ($600) ($150) ($600) Site Gas Infrastructure ($25,000) ($900) 1 ($5,750) ($11,836) ($16,250) ($310) ($3,140)1($6,463) Total First Cost ($30,788) $3,710 ($6,171) ($12,257) ($20,918) $4,500 ($3,361)1($6,684) Present Value of Equipment Replacement Cost $1,266 $1,266 Lifetime Cost Including Replacement & Financing of First ($5,349) Cost ($11,872) ($2,337) ($5,899) 'Low and high costs represent the potential range of costs and typical represents the costs used in this analysis and determined to be most representative of the conditions described in this report. Two sets of typical costs are presented, one which is applied in the On -Bill cost effectiveness methodology and another applied in the TDV methodology. 'Typical costs assume electric resistance technology. The high range represents higher end induction cooktops and heat pump clothes dryers. Lower cost induction cooktops are available. Typical incremental costs for switching from a mixed fuel design to an all -electric design are based on the following assumptions: Appliances: The Reach Code Team determined that the typical first installed cost for electric appliances is very similar to that for natural gas appliances. This was based on information provided by HVAC contractors, plumbers and builders as well as a review of other studies. After review of various sources, the Reach Code Team concluded that the cost difference between gas and electric resistance options for clothes dryers and stoves is negligible and that the lifetimes of the two technologies are also similar. HVAC: Typical HVAC incremental costs were based on the City of Palo Alto 2019 Title 24 Energy Reach Code Cost-effectiveness Analysis (TRC, 2018) which assumes approximately $200 first cost savings for the heat pump relative to the gas furnace and air conditioner. Table 6 also includes the present value of the incremental replacement costs for the heat pump based on a 15 -year lifetime and a 20 -year lifetime for the gas furnace in the mixed fuel home. DHW: Typical costs for the water heating system were based on equivalent installed first costs for the HPWH and tankless gas water heater. This accounts for slightly higher equipment cost but lower installation labor due to the elimination of the gas flue. Incremental replacement costs for the HPWH are based on a 15 -year lifetime and a 20 -year lifetime for the tankless water heater. For multifamily, less data was available and therefore a range of low and high costs is not provided. The typical first cost for multifamily similarly is expected to be close to the same for the mixed fuel and all - electric designs. However, there are additional considerations with multifamily such as greater complexity for venting of natural gas appliances as well as for locating the HPWH within the conditioned space (all climates except Climate Zones 1, 3, and 5, see Table 2) that may impact the total costs. Electric service upgrade: The study assumes an incremental cost to run 220V service to each appliance of $200 per appliance for single family homes and $150 per appliance per multifamily apartment based on cost estimates from builders and contractors. The Reach Code Team reviewed production builder utility plans for 16 © 2019-08-01 321