SL280NV Variable-Speed, Ultra-Low Emissions Gas Furnace

Offering the ultimate in comfort and emissions compliance, the SL280NV variable-speed, ultra-low NOx gas furnace produces 65% lower NOx emissions than standard low NOx furnaces. So you can feel good about your environment, inside and out.

The SL280NV is a new gas furnace product that’s available in select parts of California. If you live elsewhere in the U.S. or in Canada, ask your Lennox Dealer about the SL280V, which is also engineered for lasting reliability and efficiency.

Here are some of the top features of the SL280NV:

Heating efficiency rating of 80% AFUE delivers exceptional comfort and energy savings all winter long

Variable-speed motor provides a quiet, consistent flow of air for advanced comfort, efficiency and control

Variable speed airflow prevents temperature swings and controls humidity levels for a more comfortable environment

Low fan speed option efficiently controls humidity levels and provides continuous filtration for cleaner, healthier air

iComfort-enabled technology helps maintain your home’s temperature close to your ideal setting

  • Efficiency rating of 80% AFUE
  • Ultra-low NOx emissions
  • SilentComfort™ technology
  • Two-stage, variable speed operation
  • Dual-fuel capability
  • Enhanced humidity control
  • 20-Year Limited Warranty on heat exchanger, 10-Year Limited Warranty on covered parts



  • AHRI Certified C
  • CSA Approved (US)
  • CSA Design Certified
  • DualFuel


  • 20-Year Limited Warranty on heat exchanger
  • 10-Year Limited Warranty on covered components