Variable-Speed, Ultra-Low Emissions Gas Furnace
First-in-class, lowest emission furnace on the market
Dave Lennox Signature® Collection models come with a 10-Year Limited Warranty on covered components. Furnace heat exchangers offer either 20-Year or Lifetime Limited Warranties. For more information, visit www.Lennox.com/WarrantyYourWay..
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We have higher standards. Others think so, too.
Year after year, leading institutions choose to award Lennox for its innovative initiatives in product design which helps homeowners define what perfect air means to them. Below you’ll find a few of the recognitions this product has received.
All Around Comfort
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.
Energy efficiency that adapts to your needs
The variable-speed motor maintains a consistent temperature in your home using as little fuel as possible. This helps you stay comfortable and reduces your utility costs.
iComfort® S30 ultra smart thermostat compatibility adjusts your heating for energy savings based on your family’s routine.
An energy rating of up to 97.5% AFUE means the SL297NV can potentially save you hundreds of dollars per year, compared to an older furnace.
A variable-speed blower motor allows for constant and efficient adjustments of air flow speed and gently disperses even heat throughout your home. It also prevents loud blasts of air that can occur when a single-speed system starts up, providing quiet operation for enhanced comfort.
Everything comes together perfectly
Together with other products from the Dave Lennox Signature® Collection, the SL297NV takes comfort to an entirely new place.
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Glossary of terms
- Annualized Fuel Utilization Efficiency (AFUE)
- A measure of furnace heating efficiency. The higher the AFUE, the more efficient the furnace.Learn More
- Dual Fuel
- Learn More
A comfort system that pairs an electric heat pump with a gas furnace and alternates between the two fuel sources to maximize comfort and efficiency.
- Gas Furnaces
- A gas furnace is the part of an HVAC system that converts natural gas or propane into high-temperate heat for the home.Learn More
- Learn More
An iComfort®–enabled product is one that is designed to work with an iComfort® programmable thermostat as part of an advanced home comfort system. When you choose a heating, cooling or humidity control product that’s iComfort-enabled, you’re ensuring a higher level of home comfort and control.
Products that add to the performance of SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace
- * Lennox’ SL97UH40NV36B, EL195UH100NE60C, SL280UH100NV60C, and EL180UH040NE36A units are the first commercially available natural Gas-Fired Fan type Central Furnaces to meet a NOx emission limit of 14 nanograms per Joule (ng/J).
Proper sizing and installation of equipment is critical to achieve optimal performance. Split system air conditioners and heat pumps (excluding ductless systems) must be matched with appropriate coil components to meet ENERGY STAR criteria. Ask your contractor for details or visit www.energystar.gov.