Some of the Best Gas Furnaces You Can Buy in Dallas

Our Dave Lennox Signature® Collection gas furnaces are some of the best of the best. They also have some of the quietest heating around and provide efficient heating for your Collin County area home.

Our two Dave Lennox Signature Collection gas furnaces include variable speed motors, which enable more comfort than typical single speed furnaces. With a variable speed furnace, blower fans start up slowly and only operate at maximum speed when a much higher temperature is demanded. These furnaces can save your family hundreds on utility expenses.

Learn more about each Dave Lennox Signature Collection furnace below. When you’re ready to take the next step in your gas furnace replacement process, give Tri County Air Care LLC in Dallas a call at 469-213-8367 or set up your appointment online.

SL280NV Variable Speed, Ultra-Low Emissions Gas Furnace

Lower your heating bills while having exceptional comfort all winter long with the SL280NV gas furnace. Its quiet, two-stage heating will keep temperatures regulated in your home, even on the chilliest days. With an efficiency rating of up to 80% AFUE,1 80 cents of every dollar you spend on gas is changed into to usable heat. You can also feel good knowing the SL280NV is environmentally responsible. As the first lowest emission furnace on the market,2 it produces 65 percent less nitrogen oxide than standard low-NOx furnaces. Less of this gas helps helps the air and plants stay healthy. This furnace also offers:

  • Efficiency rating of up to 80% AFUE1 likely helping you save on energy costs every year.
  • Ultra-low speed continuous fan can help manage humidity and help provide healthier air.
  • iComfort®-enabled technology—, when installed with an iComfort® S30 Ultra Smart Thermostat, adjusts to your family’s calendar to adjust heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation keeps your furnace quiet.
  • Insulated blower component holds on to more heat.
  • 20-Year Limited Warranty on the heat exchanger.
  • 10-Year Limited Warranty on remaining covered components.3

1Annual Fuel Utilization Efficiency (AFUE) measures how efficiently an appliance converts fuel into heat over the course of a year.
22Lennox® SL97UH40NV36B, EL195UH100NE60C, SL280UH100NV60C and EL180UH040NE36A units are the first commercially available, natural Gas-Fired Fan-type Central Furnaces to meet an NOx emission limit of 14 nanograms per Joule (ng/J).
3Applies to residential applications only. See actual warranty certificate for details.

Note: Due to Lennox’s ongoing commitment to quality, specifications and ratings are subject to change without notice.

SL280V Variable Speed Gas Furnace
Efficiency Rating (SEER): up to 80
Price Guide: $$$Energy Star badge

SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace

Enjoy cozy, dependable heating with the SL297NV gas furnace. In addition to the likelihood for energy savings, this furnace can also help preserve the environment. The SL297NV is the first lowest emission furnace on the market,1 creating 65 percent less nitrogen oxide than standard low-NOx furnaces. Lower emissions mean fresher air and healthier plants. This furnace has earned ENERGY STAR® status for its energy savings and also includes:

  • Efficiency rating of up to 97.5% AFUE2—potentially saving you hundreds of dollars each year on utility costs.
  • Intuitive fan mode that controls humidity levels and repeatedly filters air.
  • iComfort®-enabled technology, when paired with an iComfort® S30 Ultra Smart Thermostat, picks up on your family’s routine to adjust heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation offer quiet operation.
  • Dual-fuel capable—Can be combined with an electric Lennox® heat pump for peak efficiency.
  • SureLight® ignition provides efficient operation.
  • Insulated blower component limits heat loss.
  • Stainless-steel secondary heat exchanger captures more heat, allowing the furnace to attain greater efficiency levels.
  • Lifetime Limited Warranty on the heat exchanger.
  • 10-Year Limited Warranty with product registration.
  • 5-Year Limited Warranty on remaining covered components.3

1Lennox® SL97UH40NV36B, EL195UH100NE60C, SL280UH100NV60C and EL180UH040NE36A units are the first commercially available, natural Gas-Fired Fan-type Central Furnaces to meet an NOx emission limit of 14 nanograms per Joule (ng/J).
2Annual Fuel Utilization Efficiency (AFUE) measures how efficiently an appliance converts fuel into heat over the course of a year.
3Covered components may be eligible to receive a 10-year warranty. Online equipment registration at www.lennoxregistration.com is required within 60 days of installation (except in California and Quebec) or the Lennox® base warranty will apply. Applies to residential applications only. See actual warranty certificate for details.

Note: Due to Lennox’s ongoing commitment to quality, specifications and ratings are subject to change without notice.

SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace
Efficiency Rating (SEER): up to 97.5
Price Guide: $$$Energy Star badge

Need help with a gas furnace repair or want to plan for a gas furnace maintenance visit? We can handle it all. Our staff in Dallas is trained, experienced and eager to help. Set up an appointment or call 469-213-8367 now.


* Annual Fuel Utilization Efficiency (AFUE) measures how efficient the appliance is in converting its fuel’s energy into heat over the course of a year.