Product Details

Dave Lennox Signature® Collection SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace

First-in-class, lowest emission furnace on the market*

Features

Overview

    Here are some of the top features of the SL297NV:

    Heating efficiency rating of 97.5% AFUE delivers exceptional comfort and energy savings all winter long*

    ENERGY STAR® certified which means the furnace meets or exceeds U.S. federal guidelines for energy efficiency.**

    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

Energy Efficiency

    • Efficiency rating of 97.5% AFUE–Delivers exceptional comfort and energy savings all winter long*
    • ENERGY STAR® certified which means the furnace meets or exceeds U.S. federal guidelines for energy efficiency.**
    • Variable-speed motor–Helps you maintain consistent temperatures throughout your home, using as little fuel as possible
    • iComfort®-enabled technology–Allows you to adjust your heating for energy savings based on your family’s routine

Quiet Operation

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

Home Comfort

    • Variable-speed airflow–Prevents temperature swings and controls humidity levels for a more comfortable environment
    • Two-stage heating–Operates at a more efficient low capacity most of the time, with extra capacity for cold mornings and chilly evenings
    • 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

Performance

    • Variable-speed fan–Provides just the right amount of air to heat, cool or clean the home’s air, minimizing daily energy use
    • Durable steel cabinet–Sleekly styled and made to last with a contoured design and high-quality paint finish

Publications

SL297NV Gas Furnace Homeowners Manual
Lennox Ultra-Low Emissions Gas Furnaces Brochure

Disclaimer

*This chart depicts potential energy savings you can expect from the SL297NV furnace, versus older furnaces with lower efficiency ratings. Criteria used in this example are 2,000 full-load heating hours, with a 60,000 Btuh heating design load and $1.368 ccf for gas. Your actual savings may vary, depending on the weather patterns in your local area, local fuel rates and your individual lifestyle. ** Select models only. See your local Lennox Dealer for more information.

Certifications

Residential Team

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Learn More

A portion of the content and images on this page were provided by Lennox International Inc. To learn more about heating, cooling and indoor air quality solutions we can offer, please visit Lennox Residential.

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Testimonials

  • We appreciated the fast and friendly service that your company provided, the guys were very friendly and patiently answered any questions we had, they also did a great job cleaning up.  My husband and I will be calling your company from now on and will recommend your company highly.  Thank You  

    Chuck & Jean - Watson, IL.

  • "I want to compliment you for your staff at Merz. The young lady who answered the phone after 8PM could tell I was a desperate housewife –NO AIR CONDITIONING. The young man who made the service call certainly deserves a pat on the back. He was so courteous and efficient. Thank you!"

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    – Carolyn (Effingham)

  • "Thank you for the prompt service I received on my furnace. It was very frustrating to hear it wasn’t working and me down in Florida. Again, Thank You."

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    – Juanita (Effingham)

  • "Thank you for the work done. The two gentlemen that came to do the work were pleasant & nice to deal with when each were here to do their part of the job required."

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    – Raymond (Effingham)

  • "Thanks again for all of your help. We really appreciate the professionalism of your guys and how nice they were while they were out here working."

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    – Jason (Charleston)

  • "Just wanted to thank you and the crew that installed my new AC & furnace, their expertise and skills are much appreciated! The personal touch in keeping my house clean was nice also."

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    – Karen (Robinson)

  • "Thanks so much for your prompt and courteous service. I really appreciated you getting my system in and operational in one day. I am Cool! Also enjoyed the service guys, very helpful. With sincere appreciation- "

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    – Cheryl (Vandalia)

  • "Thank You Merz Heating & Air Conditioning for an awesome job installing our new furnace! Great installation & customer service! If you have heating & air needs give Daryl Smith a call, he's the man!!"

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    – Jenna (Effingham)