Stay out of the cold and keep warm with our high-efficiency gas furnace. Its reliable two-stage delivery and variable-speed blower provide enhanced temperature control for your comfort. The variable-speed blower also means you’ll enjoy better summer dehumidification and a possible SEER boost as your furnace works with your cooling unit to help pull moisture out of the air. Pair it with a compatible air conditioner for a full communicating system using the Observer® communicating wall control. The ENERGY STAR® qualification on select models assures you of energy-saving performance year after year.