|Energy Efficiency||80% AFUE|
|Stages of Heating||Two-Stage|
|Quiet Operation||SilentComfort™ Technology and Sound Absorbing Insulation|
|Enhanced Humidity Control|
|Air Filter and Humidifier Compatible|
|Ultra-Low Continuous Fan|
|Ignition||SureLight® Silicon Nitride Ignitor|
|Parts Warranty||10-Year Limited Warranty on covered components|
|Heat Exchanger Warranty||20-Year Limited Warranty|
Lennox SL280V Gas Furnace
Variable-Speed, Two-Stage Gas Furnace.
A variable-speed blower maintains comfort with an adjustable flow of air, preventing temperature swings and blasts of air when your system starts. An energy rating of 80% AFUE means the SL280V can significantly reduce your heating costs, compared to an older furnace.