- Efficiency rating of up to 96% AFUE can save you hundreds of dollars each year*, compared to standard furnaces. - ENERGY STAR qualified which means the furnace meets or exceeds U.S. federal guidelines for energy efficiency. - Power Saver motor operates at constant torque to help maintain consistent air flow. - Power Saver technology not only provides energy boost capabilities improving the overall system efficiency, similar to a variable speed furnace, but also delivers higher SEER ratings in cooling mode. In continuous fan mode, this technology helps keep energy waste at a minimum. - Two-Stage Gas Valve operates at a lower heating output for efficiency, switching to a higher output as needed.