Lennox International Inc.

LennoxModel SLP99V -Variable-Capacity Gas Furnace

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Not only is the SLP99V gas furnace part of the Dave Lennox Signature® Collection, it’s part of the Ultimate Comfort System™. Which combines the best of everything Lennox has to offer to create an unprecedented whole-home comfort system that seamlessly and intelligently works together to stay finely tuned to your home and deliver consistently clean, perfect air.

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Consistently Perfect

Precise Comfort® technology allows the furnace to keep the temperature held exactly where you want it. Heat is even throughout your home, with no cold spots. If it sounds perfect, it’s because it is.

At up to 99 percent, “efficient” is an understatement.

More efficient than anything the industry has ever seen, this premier furnace boasts an efficiency rating of up to 99%—that means it essentially converts every last bit of energy it uses into heating the home.
This furnace has also been designated as one of the Most Efficient ENERGY STAR® certified products in 2020. Products that are recognized as the Most Efficient of ENERGY STAR in 2020 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.

Learn more about Lennox awards for innovative initiatives in product design.

Smarter Together

With the help of the iComfort® S30 ultra smart thermostat, the SLP99V gas furnace unlocks a world of connectivity. It stays finely tuned to your home by using sensors to react, diagnose, and troubleshoot—all while remaining in constant contact with your dealer to ensure proactive responses. Geofencing technology ensures your air turns on and off as you come and go. And the system even responds to the outdoor environment to adjust operation to account for factors like pollen and outdoor air quality.

Beyond Quiet

Even with all of its impressive power, this furnace is the quietest you can buy and has been engineered to run at variable speed to drastically minimize the sound of air kicking on or off inside the home.

  • Energy Efficiency  Up to 99% AFUE
  • ENERGY STAR® Certified  
  • Stages of Heating  Modulating
  • Quiet Operation  SilentComfort™ Technology and Fully Insulated Cabinet
  • Motor  Variable Speed
  • Enhanced Humidity Control  
  • Blower Compartment  Insulated
  • Air Filter and Humidifier Compatible  
  • Ultra-Low Continuous Fan  
  • Dual-Fuel Capable  Yes
  • Ignition  SureLight® Silicon Nitride Ignitor
  • Parts Warranty  Limited Lifetime Warranty on Heat Exchanger. 10-Year Limited Warranty on covered components.
  • Heat Exchanger Warranty  Limited Lifetime Warranty on Heat Exchanger.
  • Tax Credit Eligible