Gas-Fired Water Boilers Provide Years of Efficient Heat.

Gas-fired water boilers offer comfortable, even heat almost silently. What’s more is their high-level energy efficiency. At Main Heating & Cooling, Inc. in Utica, most all of the Lennox® gas-fired water boilers we offer are ENERGY STAR® qualified.

Learn about the benefits of our high-efficiency boilers.

GWM-IE Boiler

Forty percent more efficient than conventional boilers, this gas-modulating condensing water boiler is ENERY STAR® qualified. In fact, it boasts a 95% AFUE rating.* To boost fuel savings, it is equipped with an electronic ignition control that turns on the burner to match your household demand to make sure it uses only the energy it needs to keep you cozy.

  • Durable, self-cleaning, stainless steel heat exchanger converts 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 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

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

  • Dependable, heavy-gauge steel cabinet with baked-on paint finish
  • Condensed design for installation flexibility
  • Sealed combustion keeps noise at a minimum
  • Electronic ignition controls water temperature and ignites the burner only when necessary
  • Burns natural gas or convertible 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

Significantly more efficient than an older boiler, the GWB8 boiler has an 84.4% efficiency rating*—it also works with older radiator systems.

  • Electronic ignition controls water temperature and lights the burner only when needed
  • Thick fiberglass insulation significantly reduces off-cycle heat and energy loss
  • Cast-iron heat exchanger and titanium burners constructed for years of durability
  • Comes in six different sizes for ultimate installation flexibility
  • 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-IE Boiler
Efficiency Rating (AFUE): up to 84.4

GWB8-E Boiler

Built with a long-lasting cast-iron heat exchanger and durable stainless steel burners, this standard-efficiency boiler can perform year after year.

  • Electronic ignition controls water temperature and lights the burner only when needed
  • Thick fiberglass insulation minimizes off-cycle heat and energy loss
  • Works with traditional radiator systems
  • Comes in nine different sizes for installation anywhere in your home
  • Burns natural gas or can convert 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 586-731-0950 or schedule an appointment online so our staff at Main Heating & Cooling, Inc. in Utica can help you find the right boiler for you, or ensure your existing boiler is running as smoothly and efficiently as possible.