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7.A. - Page 64 of 285 <br />2019 Energy Efficiency Ordinance Cost-effectiveness Study <br />Table 4: Incremental Cost Assumptions <br />11 <br />RE <br />2019-08-01 <br />316 <br />Incremental Cost (2020 PV$) <br />Multifamily <br />Performance <br />(Per Dwelling <br />Measure <br />Level <br />Single Family <br />Unit) <br />Source & Notes <br />1 -hour labor. Labor rate of $96 per hour is from 2019 RSMeans for sheet metal workers and <br />2% vs 5% <br />$96 <br />n/a <br />includes an average City Cost Index for labor for California cities & 10% for overhead and <br />Distribution <br />profit. Applies to single family only since ducts are assumed to be in conditioned space for <br />multifamily <br />System <br />Leakage <br />Negligible cost based on review of available products. There are more than 6,000 Energy <br />Low Leakage Air <br />$0 <br />n/a <br />Commission certified units and the list includes many furnace and heat pump air handler <br />Handler <br />product lines from the major manufacturers, including minimum efficiency, low cost product <br />lines. <br />Low Pressure <br />0.35 vs 0.45 <br />$96 <br />$48 <br />Costs assume one-hour labor for single family and half-hour per multifamily apartment. Labor <br />Drop Ducts <br />rate of $96 per hour is from 2019 RSMeans for sheet metal workers and includes an average <br />0.45 vs 0.58 <br />$96 <br />$48 <br />(Fan W/cfm) <br />City Cost Index for labor for California cities. <br />Hot Water <br />HERS verified <br />$110 <br />$83 <br />Cost for HERS verification only, based on feedback from HERS raters. $100 per single family <br />Pipe Insulation <br />home and $75 per multifamily unit before markup. <br />For single family add 20 -feet venting at $12/ft to locate water heater on interior garage wall, <br />Compact Hot <br />Basic credit <br />$150 <br />$0 <br />less 20 -feet savings for less PEX and pipe insulation at $4.88/ft. Costs from online retailers. <br />Many multifamily buildings are expected to meet this credit without any changes to <br />Water <br />distribution design. <br />Distribution <br />Expanded <br />$83 <br />Cost for HERS verification only. $75 per multifamily unit before markup. This was only <br />credit <br />n/a <br />evaluated for multifamily buildings. <br />Cost from the 2019 DWHR CASE Report assuming a 2 -inch DWHR unit. The CASE Report <br />multifamily costs were based on one unit serving 4 dwelling units with a central water heater. <br />Drain Water <br />50/ o efficiency <br />n/a <br />$690 <br />Since individual water heaters serve each dwelling unit in this analysis, the Reach Code Team <br />Heat Recovery <br />used single family costs from the CASE Report. Costs in the CASE Report were based on a <br />46.1% efficient unit, a DWHR device that meets the 50% efficiency assumed in this analysis <br />may cost a little more. (Statewide CASE Team, 2017a). <br />Federally Pre-empted Measures <br />92% vs 80% <br />$139 <br />$139 <br />Equipment costs from online retailers for 40-kBtu/h unit. Cost saving for 6 -feet of venting at <br />$26/foot due to lower cost venting requirements for condensing (PVC) vs non -condensing <br />Furnace AFUE <br />(stainless) furnaces. Replacement at year 20 assumes a 50% reduction in first cost. Value at <br />96% vs 80% <br />$244 <br />$244 <br />year 30 based on remaining useful life is included. <br />Air <br />16/13 vs 14/11.7 <br />$111 <br />$111 <br />Conditioner <br />Costs from online retailers for 2 -ton unit. Replacement at year 20 assumes a 50% reduction in <br />SEER EER <br />18/14 vs 14/11.7 <br />$1,148 <br />$1,148 <br />first cost. Value at year 30 based on remaining useful life is included. <br />11 <br />RE <br />2019-08-01 <br />316 <br />