Conventional 92 AFUE NORTHERN ≥ Forced Air 90 AFUE SOUTHERN ≥ Furnace Split System 13 SEER NORTHERN ≥ Central A/C 14.5 SEER SOUTHERN ≥ and Air source heat pumps up to 135,000 Btuh Thermostatic Required Expansion Valves in AC HVAC System 6 cfm or less/100 sq ft living space ≤ Leakage Combination 80% Recovery Efficiency and ≥ Space 0. 65 Energy Factor Heating/Water Heater Water Heater 0.65 Energy Factor Residential ≥ Only 82% Thermal Efficiency Commercial ≥ Spot Meet ASHRAE Standard 62.2, 2010 Ventilation Ventilation for Acceptable Indoor Air and Quality Mechanical Fresh Air Ventilation System Combustion Power vented or direct-power Appliances vented unit. inside conditioned space
Conventional Forced Air Furnace ≥ 92 AFUE NORTHERN ≥ 90 AFUE SOUTHERN Split System Central A/C and Air source heat pumps up to 135,000 Btuh ≥ 13 SEER NORTHERN ≥ 14.5 SEER SOUTHERN Thermostatic Expansion Valves in AC Required HVAC System Leakage ≤ 6 cfm or less/100 sq ft living space Combination Space Heating/Water Heater ≥ 80% Recovery Efficiency and 0. 65 Energy Factor Water Heater Only ≥ 0.65 Energy Factor Residential ≥ 82% Thermal Efficiency Commercial Spot Ventilation and Mechanical Fresh Air Ventilation System Meet ASHRAE Standard 62.2, 2010 Ventilation for Acceptable Indoor Air Quality Combustion Appliances inside conditioned space Power vented or direct-power vented unit.
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