Some of the Best Gas Furnaces You Can Buy in the Bay Area

If you’re searching for a gas furnace replacement in the Bay Area, our Dave Lennox Signature Collection gas furnaces are the best option. These systems are two of the quietest gas furnaces available and are very energy efficient.

Let’s begin with energy efficiency. Our Dave Lennox Signature Collection gas furnaces are built with variable speed motors, which limit energy use by only operating fans at full speed when extreme heat is required. Variable speed motors use two-thirds less energy than single speed motors and may help your family save hundreds of dollars on yearly utility expenses compared to older furnaces.

More details for each Dave Lennox Signature Collection gas furnace model are provided below. If you want to talk with a Contra Costa Heating & AC team member about one of our products in the Bay Area, call 510-343-9841 or set up an appointment online.

SLP98V Variable-Capacity Gas Furnace

You’ll love the energy efficiency of this gas furnace. It’s earned the ENERGY STAR® label for meeting EPA efficiency standards, and it has an annual fuel utilization efficiency (AFUE) rating* of 98.2%. Add those together and you can get hundreds of dollars back in utility savings each year. Discover the SLP98V’s other outstanding features, including:

  • Efficiency rating of up to 98.2% AFUE*—helps you save on utility expenses
  • ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency
  • Variable-capacity operation works much like the cruise control system of high-performance automobiles, adjusting automatically as necessary to achieve maximum fuel efficiency
  • iComfort®-enabled technology—allows the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat, to generate even better performance and efficiency
  • PreciseComfort™ technology provides superior control
  • SilentComfort technology for some of the quietest operation you can find
  • SureLight® ignitor for an efficient performance
  • Insulated blower compartment to keep air in and minimize heat loss
  • 10-Year Limited Warranty on parts and controls
  • Limited Lifetime Warranty on heat exchanger
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

The SL280NV gas furnace can help lower your heating expenses while keeping your home comfortable all winter. Even on the coldest days, its quiet, two-stage heating will keep temperatures consistent while using as little energy as possible. You can also breathe easy knowing this furnace contributes to a better environment—inside and outside. As the first lowest emission furnace on the market,1 it emits 65 percent less nitrogen oxide than standard low-NOx furnaces. Less NOx means fresher air and plants. This furnace also features:

  • Efficiency rating of up to 80% AFUE2—which can possibly save you more money on energy bills.
  • Ultra-low speed continuous fan adjusts humidity and distributes healthier air.
  • iComfort®-enabled technology—when installed with an iComfort® S30 Ultra Smart Thermostat, learns your family’s calendar and sets heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation provides quiet heating.
  • Dual-fuel capable—Pair with an electric Lennox® heat pump for highest efficiency.
  • SureLight® ignition ensures efficient performance.
  • Insulated blower component hangs on to 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.
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 energy efficiency that seamlessly adapts to your lifestyle with the SL297NV gas furnace. Not only can this furnace help you save on energy expenses, it’s an environmentally friendly choice. As the first lowest emission furnace on the market,1 the SL297NV produces 65 percent less nitrogen oxide than standard low-NOx furnaces. You can rest easy knowing your heating system is resulting in fresher air and more robust plants. Recognized with ENERGY STAR® certification, this furnace has the capacity to save you hundreds of dollars a year on utility expenses. It also features:

  • Efficiency rating of up to 97.5% AFUE2—potentially keeping more money in your pocket on the account of decreased energy use.
  • Intuitive fan mode that can regulate humidity and create healthier air.
  • iComfort®-enabled technology, when installed with an iComfort® S30 Ultra Smart Thermostat, learns your family’s schedule for the most energy savings.
  • SilentComfort™ technology and sound-absorbing insulation means your furnace will run quietly.
  • Dual-fuel capable—Can be combined with an electric Lennox® heat pump for maximum efficiency.
  • SureLight® ignition gives efficient performance.
  • Insulated blower component restricts heat loss.
  • Stainless-steel secondary heat exchanger catches extra heat, permitting the furnace to reach better 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

The SL280NV gas furnace can help lower your heating expenses while keeping your home comfortable all winter. Even on the coldest days, its quiet, two-stage heating will keep temperatures consistent while using as little energy as possible. You can also breathe easy knowing this furnace contributes to a better environment—inside and outside. As the first lowest emission furnace on the market,2 it emits 65 percent less nitrogen oxide than standard low-NOx furnaces. Less NOx means fresher air and plants. This furnace also features:

  • Efficiency rating of up to 80% AFUE1—which can possibly save you more money on energy bills.
  • Ultra-low speed continuous fan adjusts humidity and distributes healthier air.
  • iComfort®-enabled technology, when installed with an iComfort® S30 Ultra Smart Thermostat, learns your family’s calendar and sets heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation provides quiet heating.
  • Dual-fuel capable—Pair with an electric Lennox® heat pump for highest efficiency.
  • SureLight® ignition ensures efficient performance.
  • Insulated blower component hangs on to 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

Contra Costa Heating & AC in the Bay Area is ready to help with any of your gas furnace replacement, repair or maintenance needs. Call 510-343-9841 or use our online scheduler to create your appointment.


* 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.