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Lennox Signature Series SL280NV Gas Furnace


Variable-Speed, Ultra-Low Emission Gas Furnace

Heating Savings
5-Year Savings: $2506
10-Year Savings: $5012
15-Year Savings: $7518
Energy Saving Per Year Based On US National Average


  • Up To 80% Annual Fuel Utilization Efficiency (AFUE)
  • Enhanced Humidity Control
  • High-Efficiency Variable-Speed Blower Motor
  • Two-Stage
  • 20-Year Heat Exchanger Limited Warranty
  • 10-Year Limited Warranty on Covered Components

Two-Stage Operation for More Balanced Temperatures

A step up from single-stage furnaces because its gas valve offers an additional lower setting. Most of the time the unit will meet heating needs at its lower stage, resulting in balanced and consistent temperatures with lower energy use. Should the low heat setting not heat the space quickly enough, the furnace will switch to the high setting. This ability to switch between the two settings offers greater comfort and efficiency.


Energy Efficiency that Adapts to Your Needs

The standard 80% AFUE means the SL280NV can reduce your heating costs, compared to an older furnace.

Equipped with the most efficient variable-speed blower motor available with the ability to slowly ramp the airflow up or down to provide consistently even temperatures as it only produces the necessary amount of airflow at any given time. Plus, variable-speed motors can run at a continuous low speed which allows for better air filtration and humidity removal.


High Quality, Tough and Dependable

Built for durability and reliability, the SL280NV is made with a heavy-duty steel cabinet for a long, trouble-free life.