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

Gas-fired water boilers deliver comfortable, even heat with little to no noise. What’s more is their high-level energy efficiency. At Assured Appliance and Heating & Air in Genoa, many of the Lennox® gas-fired water boilers we offer are ENERGY STAR® qualified.

Read more about 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. Not surprisingly, it earned a 95% AFUE rating.* To get the most fuel savings, it uses an electronic ignition control that turns on the burner to meet your household demand to be sure it uses only the energy it needs to keep your family warm.

  • Strong, self-cleaning, stainless steel heat exchanger converts waste energy into usable heat
  • Sealed combustion reduces noise
  • To meet your comfort needs, the modulating capacity allows the burner to fire as low as 20% of capacity
  • 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.

  • Durable, heavy-gauge steel cabinet with baked-on paint finish
  • Small design for installation flexibility
  • Sealed combustion minimizes noise
  • Electronic ignition monitors water temperature and turns on the burner only when 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

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

  • Electronic ignition oversees 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 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 oversees water temperature and ignites the burner only when needed
  • Thick fiberglass insulation significantly reduces off-cycle heat and energy loss
  • Works with traditional 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 847-293-0047 or schedule an appointment online so our experts at Assured Appliance and Heating & Air in Genoa can help you find the right boiler for you, or get your current boiler running as smoothly and efficiently as possible.