The rewards of efficiencyAt 80% AFUE††, you can depend on substantial energy savings, especially thanks to the unique RPJ®III heat exchanger. The weld-free construction, the aluminized steel material, and the integrated ripple-edged design together increase efficiency and save energy. At lower speeds, the variable-speed motor also uses less electricity. ††AFUE stands for Annual Fuel Utilization Efficiency. Percentage based on national averages; may vary according to efficiency of current unit and installation. |