Gas-Fired Water Boilers Provide Years of Efficient Heat.

Gas-fired water boilers deliver comfortable, even heat very little noise. What’s better is their excellent energy efficiency. At Sig Cox Heating and Air Conditioning in Augusta, most all of the Lennox® gas-fired water boilers we offer are ENERGY STAR® qualified.

Explore the benefits of our high-efficiency boilers.

GWM-IE Boiler

This ENERGY STAR® qualified, gas-modulating condensing water boiler is 40% more efficient than conventional boilers. In fact, it boasts a 95% AFUE rating.* To get the most fuel savings, it uses an electronic ignition control that turns on the burner to match your household demand to be sure it uses only the energy it needs to keep your home cozy.

  • Strong, self-cleaning, stainless steel heat exchanger turns waste energy into usable heat
  • Sealed combustion minimizes noise
  • By allowing the burner to fire as low at 20% of its capacity, it’s modulating capability perfectly meets your comfort needs
  • Stainless steel mesh burner resists corrosion and oxidation
  • CPVC flue condensate collector is corrosion-resistant and erases 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

The GWB9-IH boiler effortlessly integrates with a traditional radiator system and is ENERGY STAR qualified with an AFUE rating of 90%.* Its cast-aluminum heat exchanger moves heat quickly—potentially three times faster than a traditional cast-iron exchanger.

  • Dependable, heavy-gauge steel cabinet with baked-on paint finish
  • Condensed design for installation flexibility
  • Sealed combustion minimizes noise
  • Electronic ignition oversees water temperature and ignites the burner only when it is needed
  • Burns natural gas or can convert 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

Far more efficient than an older boiler, the GWB8 boiler boasts an 84.4% efficiency rating*—plus, it works with conventional radiator systems.

  • Electronic ignition controls 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 can perform for years to come with its long-lasting cast-iron heat exchanger and durable stainless steel burners.

  • Electronic ignition controls water temperature and lights the burner only when needed
  • Thick fiberglass insulation greatly reduces off-cycle heat and energy loss
  • Compatible with older radiator systems
  • Comes in nine different sizes for installation anywhere in your home
  • Burns natural gas or can be converted 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

Call us at 706-722-5304 or schedule an appointment online so our staff at Sig Cox Heating and Air Conditioning in Augusta can help you find the right boiler for you, or fix your boiler so it is running as smoothly and efficiently as possible.