XL15c Heat PumpUp to 15.2 SEER2Up to 7.5 HSPF2 XL15c Gas/ElectricUp to 15.2 SEER2Up to 81 AFUE XR13.4c Air ConditionerUp to 13.4 SEER2 XL15c Dual FuelUp to 12.2 SEER2Up to 7.5 HSPF2Up to 81 AFUE XR13.4c Gas/ElectricUp to 13.4 SEER2Up to 81 AFUE XR13.4c Heat PumpUp to 13.4 SEER2Up to 7 HSPF2 Priority 15 Gas/ElectricUp to 15.2 SEER2Up to 81 AFUE Priority 15 3PH Gas/ElectricUp to 15.2 SEER2Up to 81 AFUE Choice 14 Gas/ElectricUp to 14.3 SEER2Up to 81 AFUE Choice 14 3PH Gas/ElectricUp to 14.3 SEER2Up to 81 AFUE Priority 15 Heat PumpUp to 15.2 SEER2Up to 8.1 HSPF2 Priority 15 3PH Heat PumpUp to 15.2 SEER2Up to 8.1 HSPF2 Choice 14 Heat PumpUp to 13.6 SEER2Up to 7 HSPF2 Choice 14 3PH Heat PumpUp to 13.6 SEER2Up to 7 HSPF2 Priority 15 Dual FuelUp to 15.2 SEER2Up to 8.1 HSPF2Up to 81 AFUE Choice 14 Air ConditionerUp to 14.3 SEER2