Some of the Best Gas Furnaces You Can Buy in Port St. Lucie

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 produce efficient heating for your St. Lucie County area home.

Our Dave Lennox Signature Collection gas furnaces feature variable speed motors, which allow more comfort than older single speed furnaces. Variable speed furnaces’ blower fans start up slowly and only operate at their highest speed when extreme heat is demanded. These furnaces could 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 Custom Air Systems Inc in Port St. Lucie a call at 772-247-2283 or schedule your appointment online.

SLP98V Variable-Capacity Gas Furnace

If you want a highly energy efficient heating system, the SLP98V is the gas furnace for you. Boasting a 98.7% annual fuel utilization efficiency (AFUE) rating*, you may see more energy savings. The SLP98V is also ENERGY STAR® qualified, meaning it has met or exceeds EPA standards for energy efficient operation. The SLP98V gas furnace is a great choice for homes in Port St. Lucie for other reasons, too. Some of its features include:

  • Efficiency rating of up to 98.7% AFUE*can help you save on your utility expenses
  • Variable-capacity operation works much like the cruise control system of high-performance automobiles, automatically making adjustments as necessary to allow maximum fuel efficiency
  • iComfort®-enabled technology—allows the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat, to provide even better performance and efficiency
  • PreciseComfort technology provides simple and exact temperature control
  • SilentComfort technology allows the system to operate quietly
  • SureLight® ignitor for an efficient performance
  • Insulated blower compartment to trap in heat and minimize losses
  • Limited Lifetime Warranty on heat exchanger
  • 10-Year Limited Warranty on covered components
SLP98V Variable-Capacity Gas Furnace
Efficiency Rating (SEER): up to 98.7
Price Guide: $$$Energy Star badge

SL280NV Variable Speed, Ultra-Low Emissions Gas Furnace

Decrease your utility expenses while gaining remarkable 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 safe. As the first lowest emission furnace on the market,2 it emits 65 percent less nitrogen oxide than standard low-NOx furnaces. Less of this gas helps keeps the air and plants healthy. This furnace also offers:

  • Efficiency rating of up to 80% AFUE1 potentially helping you save on energy costs annually.
  • Ultra-low speed continuous fan can help control humidity and distribute fresher air.
  • iComfort®-enabled technology—, when linked with an iComfort® S30 Ultra Smart Thermostat, learns your family’s routine to set heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation keeps your furnace quiet.
  • Insulated blower component keeps in 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 comfortable, reliable 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 creating 65 percent less nitrogen oxide than standard low-NOx furnaces. Lower emissions mean fresher air and stronger plants. This furnace has received ENERGY STAR® certification for its energy savings and also includes:

  • Efficiency rating of up to 97.5% AFUE2—potentially saving you hundreds of dollars a year on energy bills.
  • Intuitive fan mode that regulates humidity levels and regularly cleans 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 ensure quiet operation.
  • Dual-fuel capable—Can be installed with an electric Lennox® heat pump for maximum efficiency.
  • SureLight® ignition ensures efficient heating.
  • Insulated blower component cuts down on heat loss.
  • Stainless-steel secondary heat exchanger holds on to additional 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 set up a gas furnace maintenance visit? We can handle it all. Our staff in Port St. Lucie is trained, experienced and eager to help. Set up an appointment or call 772-247-2283 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.