The Amana brand AMH95 Two-Stage Gas Valve, Multi-Speed Furnace with TwinComfort™ Technology is our premium furnace for indoor comfort on cold days. The AMH95 performs like two furnaces: having an energy-efficient, low-stage furnace for moderately cold days, and a more heavy duty, high-stage furnace for extremely cold days. You will also find it providing you with consistent heat over the harsh, stop-and-go temperatures found in many single-stage furnaces. Even better is the ability to have up to 95% AFUE efficiency level, giving you smaller utility bills compared to other AFUE furnaces.