Trane’s XL15c EarthWise™ Hybrid Dual Fuel Packaged System is a popular choice that delivers energy efficiency and helps lower your utility bills. The flexible, dual-fuel system, which alternates between gas and electric fuel sources, to cool and dehumidify in the summer and provide comfortable heat in the winter, delivers sustained and reliable performance. With a hybrid system that provides up to 15 SEER2 for cooling and 81% AFUE for heating, this system ensures versatile fan settings and year-round comfort, no matter the weather.