Gas-Fired Water Boilers Provide Years of Efficient Heat.

Gas-fired water boilers deliver comfortable, even heat almost silently. What’s even better is their exceptional energy efficiency. At PWA Heating & Cooling Inc in Plainfield, most all of the Lennox® gas-fired water boilers we carry are ENERGY STAR® qualified.

Explore the details 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 features an electronic ignition control that turns on the burner to coordinate with your household demand to ensure 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
  • Modulating capability perfectly meets your comfort needs by allowing the burner to fire at as low as 20% of its capacity
  • Stainless steel mesh burner combats corrosion and oxidation
  • CPVC flue condensate collector is corrosion-resistant and removes 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 moves heat quickly—potentially three times faster than a traditional cast-iron exchanger.

  • Durable, heavy-gauge steel cabinet with baked-on paint finish
  • Condensed design for flexible installation options
  • Sealed combustion keeps noise at a minimum
  • Electronic ignition controls water temperature and turns on the burner only when it is needed
  • 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

With an 84.4% efficiency rating,* the GWB8-IE boiler is significantly more efficient than an older boiler—it also works with older radiator systems.

  • Electronic ignition controls water temperature and ignites the burner only when needed
  • Thick fiberglass insulation minimizes off-cycle heat and energy loss
  • Cast-iron heat exchanger and titanium burners engineered for years of durability
  • Comes 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

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 ignites the burner only when needed
  • Thick fiberglass insulation greatly reduces off-cycle heat and energy loss
  • Works with older radiator systems
  • Offered 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 815-768-6656 or schedule an appointment online so our experts at PWA Heating & Cooling Inc in Plainfield can help you find the right boiler for you, or fix your boiler so it is running as smoothly and efficiently as possible.