The MRCOOL MGM96EE120D5NB VersaPro is a 120,000 BTU gas furnace designed to deliver efficient, dependable heating with a 96% AFUE rating. It operates by burning natural gas to generate heat, which is transferred to the circulating air and distributed throughout the home. This furnace is used with residential HVAC systems, including central air conditioning and heat pump systems. MRCOOL MGM96EE120D5NB VersaPro 120k BTU 96% AFUE Gas Furnace