YORK® Packaged Equipment PCE4 Air ConditionerUp to 14 SEERUp to 11 EER PCG4 Gas ElectricUp to 14 SEERUp to 11 EERUp to 81 AFUE PCE6 Air ConditionerUp to 16 SEERUp to 12.5 EER PHE4 Heat PumpUp to 14 SEERUp to 8 HSPF PCG6 Gas ElectricUp to 16 SEERUp to 12.5 EERUp to 81 AFUE PCG4 Ultra Low Nox Gas ElectricUp to 14 SEERUp to 11 EERUp to 81 AFUE PHG4 Dual FuelUp to 14 SEERUp to 8 HSPFUp to 81 AFUE PHE6 Heat PumpUp to 16 SEERUp to 8.2 HSPF PHG6 Dual FuelUp to 16 SEERUp to 8.2 HSPFUp to 81 AFUE