Some of the Best Gas Furnaces You Can Buy in Robstown

If you’re searching for a gas furnace replacement in Corpus Christi, our Dave Lennox Signature Collection gas furnaces are the best option. These systems are a couple of the quietest gas furnaces you can find and are extremely energy efficient.

Let’s start with energy efficiency. Our Dave Lennox Signature Collection gas furnaces feature variable speed motors, which conserve energy by only running fans at full speed when a large change in heat is required. Variable speed motors use 2/3 less energy than single speed motors and can help you save hundreds on your annual utility bills compared to standard furnaces.

More details for each Dave Lennox Signature Collection gas furnace model are included below. To talk with a McNatt Inc professional about one of our products in Corpus Christi, call 361-247-0605 or make 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%. Combined, these two ratings help you save hundreds annually on your utility expenses. Discover the SLP98V’s other outstanding features, including:

  • Efficiency rating of up to 98.2% AFUE*—can save you money on your 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, automatically making adjustments as necessary to provide maximum fuel efficiency
  • iComfort®-enabled technology—helps the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat, to offer even better performance and efficiency
  • PreciseComfort™ technology provides superior control
  • SilentComfort technology helps the system run quietly
  • SureLight® ignitor for an efficient performance
  • Insulated blower compartment to keep air in and reduce 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 decrease your utility costs while keeping your home pleasant 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 healthier environment—inside and outside. As the first lowest emission furnace on the market,1 it makes 65 percent less nitrogen oxide than standard low-NOx furnaces. Less NOx means healthier air and plants. This furnace also features:

  • Efficiency rating of up to 80% AFUE2—which can potentially save you more money on heating expenses.
  • Ultra-low speed continuous fan controls humidity and delivers healthier air.
  • iComfort®-enabled technology—when paired with an iComfort® S30 Ultra Smart Thermostat, becomes familiar with your family’s schedule and sets heating for energy savings.
  • SilentComfort™ technology and sound-absorbing insulation ensures quiet performance.
  • Dual-fuel capable—Use with an electric Lennox® heat pump for the most 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 flawlessly acclimates to your daily life with the SL297NV gas furnace. Not only can this furnace help you save on heating 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 heater is contributing to purer air and healthier plants. Recognized with ENERGY STAR® designation, this furnace has the potential to save you hundreds of dollars each year on energy costs. It also features:

  • Efficiency rating of up to 97.5% AFUE2—likely keeping more money in your pocket because of reduced energy use.
  • Intuitive fan mode that can regulate humidity and create cleaner air.
  • iComfort®-enabled technology, when installed with an iComfort® S30 Ultra Smart Thermostat, acclimates to your family’s routine for optimal 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 delivers efficient performance.
  • Insulated blower component restricts heat loss.
  • Stainless-steel secondary heat exchanger holds on to extra heat, letting the furnace to achieve 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 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

McNatt Inc in Robstown is ready to help with any of your gas furnace replacement, repair or maintenance needs. Call 361-247-0605 or use our online scheduler to make 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.