92% + Efficient Furnaces
Deluxe two-stage gas furnaces offer a money-saving 92% ultra-efficiency rating, whisper-quiet operation from its insulated blower compartment (which also reduces heat loss), a next-generation Silicon Nitride Heat Surface Ignition System for increased safety, and the best warranties in the industry.
90% Efficient Furnaces
Premium furnaces offer outstanding energy-saving efficiencies up to 90%, with multiple installation options (depending on model), super-quiet operation and reduced heat loss from its insulated blower compartment, 4-speed blower motor, safety ignition system, and industry-leading warranties.
80% Efficient Furnaces
Standard furnaces are an excellent value with 80% efficiency rating–derived from a two-stage gas valve system, super-efficient, variable-speed circulator motor, and its quiet, efficient two-speed induced-draft combustion blower motor system–along with extremely quiet operation and patented stainless-steel heat exchanger.