Some of the Best Gas Furnaces You Can Buy in Mechanicsville

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 the Tri-County area home.

These Dave Lennox Signature Collection gas furnaces include variable speed motors, which enable more comfort than older single speed furnaces. Variable speed furnaces’ blower fans start up slowly and only operate at maximum speed when a much higher temperature is demanded. These furnaces could save your family a substantial amount on your energy bills.

Learn more about each Dave Lennox Signature Collection furnace below. When you’re ready to move forward with your gas furnace replacement, give M & S Heating & Air LLC in Mechanicsville a call at 301-363-4699 or schedule your appointment online.

SLP98V Variable-Capacity Gas Furnace

If high energy efficiency is what you want, the SLP98V is the gas furnace for you. Boasting a 98.7% annual fuel utilization efficiency (AFUE) rating*, you could see high energy savings. This product is also ENERGY STAR® qualified, meaning it has met or exceeds EPA standards for energy efficient operation. The SLP98V gas furnace is great for homes in Mechanicsville for its variety of additional features, such as:

  • Efficiency rating of up to 98.7% AFUE*can help reduce 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 offer higher performance and better efficiency
  • PreciseComfort technology provides outstanding temperature control
  • SilentComfort technology allows the system to run quietly
  • SureLight® ignitor for an efficient performance
  • Insulated blower compartment to keep air in and minimize heat loss
  • 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 having 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 creates 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 annually.
  • Ultra-low speed continuous fan can help control humidity and help provide healthier air.
  • iComfort®-enabled technology—, when linked with an iComfort® S30 Ultra Smart Thermostat, learns your family’s calendar to set heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation keeps your furnace quiet.
  • Insulated blower component retains 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 likelihood 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 achieved 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 energy bills.
  • Intuitive fan mode that controls humidity levels and repeatedly cleans air.
  • iComfort®-enabled technology, when installed with an iComfort® S30 Ultra Smart Thermostat, picks up on 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 delivers efficient performance.
  • Insulated blower component limits heat loss.
  • Stainless-steel secondary heat exchanger captures additional heat, allowing the furnace to achieve increased 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

SL280NV Variable-Speed, Ultra-Low Emissions Gas Furnace

Decrease your utility expenses while having 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 creates 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 annually.
  • Ultra-low speed continuous fan can help control humidity and help provide healthier air.
  • iComfort®-enabled technology, when linked with an iComfort® S30 Ultra Smart Thermostat, learns your family’s calendar to set heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation keeps your furnace quiet.
  • Dual-fuel capable—Install with an electric Lennox® heat pump for peak efficiency.
  • SureLight® ignition gives efficient operation.
  • Insulated blower component retains more heat.
  • 20-Year Limited Warranty on the heat exchanger.
  • 10-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.

SL280NV Variable-Speed, Ultra-Low Emissions Gas Furnace
Price Guide: $$$
Efficiency Rating (SEER): up to 80
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 Mechanicsville is trained, experienced and ready to help. Make an appointment or call 301-363-4699 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.