With a fuel-efficient design, the 96 Two-Stage Gas Furnace boasts up to a 96% AFUE rating, which means the gas furnace system is very adept at converting fuel to heat. The two-stage heating provides you with consistent comfort that utilizes innovative Vortica™ II Blower technology — so that you get quiet performance and indoor warmth to perfection. An added bonus is that with twice the precision, and automatic adjustment of fuel usage and run times, you can enjoy a furnace that helps lower your energy bills throughout the year.