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

Gas-fired water boilers provided comfortable, even heat with little to no noise. What’s even better is their high-level energy efficiency. At Rapids Sheet Metal Works Inc in Wisconsin Rapids, several of the Lennox® gas-fired water boilers we offer are ENERGY STAR® qualified.

Read more about the features 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. Not surprisingly, it boasts a 95% AFUE rating.* To get the most fuel savings, it features 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 you cozy.

  • Reliable, self-cleaning, stainless steel heat exchanger changes waste energy into usable heat
  • Sealed combustion keeps noise at a minimum
  • 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 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 effortlessly integrates 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
  • Small design for flexible installation options
  • Sealed combustion reduces noise
  • Electronic ignition monitors water temperature and ignites the burner only when necessary
  • 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

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

  • Electronic ignition monitors 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 reliability
  • Offered 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

With its durable cast-iron heat exchanger and long-lasting stainless steel burners, this standard-efficiency boiler can perform for years.

  • Electronic ignition monitors water temperature and ignites the burner only when needed
  • Thick fiberglass insulation greatly reduces off-cycle heat and energy loss
  • Will work with traditional radiator systems
  • Available 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 715-421-5555 or schedule an appointment online so our experts at Rapids Sheet Metal Works Inc in Wisconsin Rapids can help you find the right boiler for you, or ensure your existing boiler is running as smoothly and efficiently as possible.