The 80 Single-Stage Gas Furnace brings reliability and dependability to supply the heat you need, even in the coldest months. With an AFUE rating of up to 80%, the 80 Single-Stage Gas Furnace gives you more control over your temperature, maximizing home comfort without increasing energy costs. Pair your 80 Single-Stage Gas Furnace with a Trane CleanEffects^® Whole Home Air Cleaner to reduce allergens in your home. Contact your local Trane expert today for installation.