The MRCOOL MGA80SE040A3C VersaPro 40K BTU 80% AFUE Gas Furnace is a residential heating unit designed for compatible ducted HVAC systems. It burns natural gas to generate heat, which transfers through the heat exchanger before the blower distributes warm air through the ductwork. With an 80% AFUE rating, it provides dependable heating for homes and compatible cooling systems. This fur... https://www.partshnc.com/mrcool-versapro-r-454b-80-afue-gas-furnace-mga80se040a3c