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2b AIR LEAKAGE CONTROL AND EFFICIENT VENTILATION 2b: 1.0 <br /> Compliance based on Section R402.4.1.2: Reduce the tested air leakage to 2.0 air <br /> changes per hour maximum <br /> and <br /> All whole house ventilation requirements as determined by Section M 1507.3 of the <br /> International Residential Code shall be met with a heat recovery ventilation system <br /> with minimum sensible heat recovery efficiency of 0.70. <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the maximum tested building air leakage and shall <br /> show the heat recovery ventilations stem. <br /> 2c AIR LEAKAGE CONTROL AND EFFICIENT VENTILATION 2c: 1.5 <br /> Compliance based on Section R402.4.1.2: Reduce the tested air leakage to 1.5 air <br /> changes per hour maximum <br /> and <br /> All whole house ventilation requirements as determined by Section M1507.3 of the <br /> International Residential Code shall be met with a heat recovery ventilation system <br /> with minimum sensible heat recovery efficiency of 0.85. <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the maximum tested building air leakage and shall <br /> show the heat recovery ventilations stem. <br /> 3a HIGH EFFICIENCY HVAC EQUIPMENT 3a: 0.5 <br /> Gas,propane or oil-fired furnace with minimum AFUE of 95% <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the heating equipment type and the minimum <br /> equipment efficienc . <br /> 3b HIGH EFFICIENCY HVAC EQUIPMENT 3b: 1.0 <br /> Air-source heat pump with minimum HSPF of 8.5 <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the heating equipment type and the minimum <br /> equipment efccienc . <br /> 3c HIGH EFFICIENCY HVAC EQUIPMENT 3c: 2.0 <br /> Closed-loop ground source heat pump;with a minimum COP of 3.3 <br /> or <br /> Open loop water source heat pump with a maximum pumping hydraulic head of 150 <br /> feet and minimum COP of 3.6 <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the heating equipment type and the minimum <br /> equipment efficienc . <br /> 3d HIGH EFFICIENCY HVAC EQUIPMENT 3d: 1.0 <br /> DUCTLESS SPLIT SYSTEM HEAT PUMPS,ZONAL CONTROL: <br /> In homes where the primary space heating system is zonal electric heating,a ductless <br /> heat pump system shall be installed and provide heating to at least one zone of the <br /> housing unit. <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the heating equipment type and the minimum <br /> equipment efficienc . <br /> 4 HIGH EFFICIENCY HVAC DISTRIBUTION SYSTEM:' 1.0 <br /> All heating and cooling system components installed inside the conditioned space.All <br /> combustion equipment shall be direct vent or sealed combustion. <br /> Locating system components in conditioned crawl spaces is not permitted under this <br /> option. <br /> Electric resistance heat is not permitted under this option. <br /> Direct combustion heating equipment with AFUE less than 80%is not permitted <br /> under this option. <br /> To qualify to claim this credit,the building permit drawings shall specify the option <br /> being selected and shall specify the heating equipment type and shall show the <br /> location of the heating and cooling equipment and all the ductwork. <br /> 3)1 <br />