SL280UH080NV48B 80% AFUE Upflow/Horizontal Gas Furnace, Variable Speed, 2 Stage, 80,000 Btuh, 3-4 Ton, Ultra-Low NOx, DLSC Series

The first residential ultra low emission gas furnace family you can purchase! Introducing the new SL280V family of Ultra Low NOx gas furnaces that produce 65% lower NOx emissions than standard low NOx furnaces. The SL280UH080NV48B has a variable-speed blower motor and two-stage gas valve that allow the furnace to adjust its speed and airflow to maintain an ideal temperature. 

• Compliant with California NOx regulation (14 ng/J)
• Reduces NOx emissions by 65%
• The variable speed motor uses 2/3 less the electricity as a standard motor
• Two-Stage Heating
• Variable-Speed Airflow
• Lighter, compact cabinet
• Peace-Of-Mind Protection - The SL280NV comes with a 20-year limited warranty on the heat exchanger and a 10-year limited warranty on all remaining covered components. See actual warranty certificate for details.