Some of the Best Gas Furnaces You Can Buy in Naples

Our Dave Lennox Signature® Collection gas furnaces are some of the best you can find. They also have some of the quietest heating around and offer efficient heating for your Southwest Florida area home.

These Dave Lennox Signature Collection gas furnaces boast variable speed motors, which help produce more comfort than traditional single speed furnaces. Variable speed furnaces’ blower fans start up slowly and only operate at full speed when there’s an extreme demand for heat. These furnaces can save your family a substantial amount on your energy bills.

Learn about each of our Dave Lennox Signature Collection furnaces and features here. When you’re ready to move forward with your gas furnace replacement, give Speedy Air Conditioning in Naples a call at 239-244-3439 or schedule your appointment online.

SL297NV Variable-Speed, Ultra-Low Emissions Gas Furnace

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

  • Efficiency rating of up to 97.5% AFUE2—potentially saving you hundreds of dollars every year on heating bills.
  • Intuitive fan mode that manages humidity levels and continuously filters air.
  • iComfort®-enabled technology, when installed with an iComfort® S30 Ultra Smart Thermostat, learns your family’s activities to modify heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation provide quiet operation.
  • Dual-fuel capable—Can be installed with an electric Lennox® heat pump for peak efficiency.
  • SureLight® ignition ensures efficient heating.
  • Insulated blower component cuts down on heat loss.
  • Stainless-steel secondary heat exchanger catches additional heat, allowing the furnace to attain higher 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 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 schedule a gas furnace maintenance visit? We’ve got you covered. Our staff in Naples is trained, experienced and eager to help. Make an appointment or call 239-244-3439 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.