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 allow more comfort than traditional single speed furnaces. With a variable speed furnace, blower fans start up slowly and only operate at full speed when a much higher temperature is demanded. These furnaces may save your family a significant amount on utility bills.

Find out more about our Dave Lennox Signature Collection furnaces 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 schedule your appointment online.

SL280NV Variable Speed, Ultra-Low Emissions Gas Furnace

Lower your heating bills while having outstanding 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 potentially helping you save on energy costs each year.
  • Ultra-low speed continuous fan can help manage humidity and contribute to healthier air.
  • iComfort®-enabled technology—, when used with an iComfort® S30 Ultra Smart Thermostat, picks up on your family’s schedule 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 utility 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 a year on heating costs.
  • Intuitive fan mode that manages humidity levels and repeatedly refines air.
  • iComfort®-enabled technology, when linked with an iComfort® S30 Ultra Smart Thermostat, adapts to your family’s routine to modify heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation provide quiet operation.
  • Dual-fuel capable—Can be used with an electric Lennox® heat pump for top 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’ve got you covered. Our staff in Dallas is trained, experienced and eager to help. Schedule 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.