Trane Packaged Systems XL15cUp to 15 SEER XL15c Heat PumpUp to 15 SEERUp to 8.4 HSPF XR14c Heat PumpUp to 14 SEERUp to 8 HSPF XL15c Gas/ElectricUp to 15 SEERUp to 81 AFUE XR14c Gas/ElectricUp to 14 SEERUp to 81 AFUE