American Standard Packaged Systems Gold 15 Gas/ElectricUp to 15 SEER2Up to 81 AFUE Gold 15 Heat PumpUp to 15 SEER2Up to 7.5 HSPF2 Silver 13.4 Gas/ElectricUp to 13.4 SEER2Up to 81 AFUE Silver 13.4 Heat PumpUp to 13.4 SEER2Up to 7 HSPF2 Gold 15 HybridUp to 15 SEER2Up to 81 AFUEUp to 7.45 HSPF2