|Energy Efficiency||Up to 97.5%|
|ENERGY STAR® Certified|
|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||5-year limited warranty on covered components|
|Heat Exchanger Warranty||Limited Lifetime Warranty|
Lennox SL297NV Gas Furnace
Variable-Speed, Ultra-Low Emissions Gas Furnace.
The SL297NV ultra-low NOx gas furnace with our revolutionary design provides reliable comfort, while producing 65% lower NOx emissions than standard low NOx furnaces. So, while you’re staying cozy and warm, you’re also helping to protect the environment.