Enjoy Cozy, Quiet, Efficient Heat for Years to Come with a Gas-Fired Boiler.

If you want comfortable, even heat from an energy-efficient source, McNatt Inc in Corpus Christi will find a gas-fired water boiler that matches what you’re looking for. With many ENERGY STAR® qualified options, we’re confident we have the Lennox® gas-fired water boiler for you.

The features of our high-efficiency boilers are extensive.

GWM-IE Boiler

With a 95% AFUE rating,* the GVM-IE boiler is ENERGY STAR® qualified and up to 40% more efficient than conventional boilers. It features an electronic ignition control, which adjusts power to the burner to your household’s demand to help ensure it gets you the most fuel savings possible while helping your home stay comfortable.

  • Reliable, self-cleaning, stainless steel heat exchanger converts wasted energy into usable heat
  • Minimized noise from sealed combustion
  • Modulating power aligns with your comfort needs by letting the burner to fire at as low as 20% of its capacity
  • Stainless steel mesh burner fights corrosion and oxidation
  • CPVC flue condensate collector is corrosion-resistant and eliminates the use of metal in the venting area
  • 15-year limited warranty on heat exchanger, 10-year limited warranty on remaining covered components
GWM-IE Boiler
Efficiency Rating (AFUE): up to 95
Energy Star badge

GWB9-IH Boiler

Easy to use with an existing, traditional radiator system, the GWB9-IH boiler is ENERGY STAR qualified. In fact, it earned an AFUE rating of 90%.* It also moves heat as much as three times quicker than a traditional cast-iron exchanger, thanks to its cast-aluminum heat exchanger.

  • Enduring, heavy-gauge steel cabinet with baked-on paint finish
  • [Compact|Condensed|Small]38] design for flexible installation
  • Sealed combustion minimizes noise
  • Electronic ignition monitors water temperature and turns on the burner only when needed
  • Burns natural gas or can be converted to LP gas
  • 15-year limited warranty on heat exchanger, 10-year limited warranty on remaining covered components
GWB9-IH Boiler
Efficiency Rating (AFUE): up to 90
Energy Star badge

GWB8-IE Boiler

So much more efficient than a traditional boiler, the GWB8-IE boiler carries an 84.4% efficiency rating.* What makes it even better is its ability to work with traditional radiator systems.

  • Electronic ignition oversees water temperature and lights the burner only when needed
  • Thick fiberglass insulation greatly reduces off-cycle heat and energy loss
  • Cast-iron heat exchanger and titanium burners engineered for years of reliable use
  • Available in six different sizes for ultimate installation flexibility
  • Burns natural gas or convertible to LP gas
  • 20-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts
GWB8-IE Boiler
Efficiency Rating (AFUE): up to 84.4

GWB8-E Boiler

This standard-efficiency boiler will perform year after year because it’s built from quality materials, including a long-lasting cast-iron heat exchanger and durable stainless steel burners.

  • Electronic ignition monitors water temperature and lights the burner only when needed
  • Thick fiberglass insulation significantly reduces off-cycle heat and energy loss
  • Compatible with traditional radiator systems
  • Comes in nine different sizes for installation anywhere in your home
  • Burns natural gas or convertible to LP gas
  • 20-year limited warranty on heat exchanger, 1-year limited warranty on remaining covered parts
GWB8-E Boiler
Efficiency Rating (AFUE): up to 83.9

Our team at McNatt Inc in Corpus Christi is here to help you find the right gas fired water boiler for you, or help you maintain your existing boiler. Schedule your appointment online, or by calling us at 361-888-4808.