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

Gas-fired water boilers provided comfortable, even heat very little noise. What’s even better is their exceptional energy efficiency. At Campbell's Tempracure in Crystal Lake, most all of the Lennox® gas-fired water boilers we carry are ENERGY STAR® qualified.

Learn about 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. As a matter of fact, it carries a 95% AFUE rating.* To boost fuel savings, it is equipped with an electronic ignition control that turns on the burner to coordinate with your household demand to be sure it uses only the energy it needs to keep your family cozy.

  • Reliable, self-cleaning, stainless steel heat exchanger changes waste energy into usable heat
  • Sealed combustion reduces 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 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.

  • Enduring, heavy-gauge steel cabinet with baked-on paint finish
  • Compact design for flexible installation options
  • Sealed combustion keeps noise at a minimum
  • Electronic ignition controls water temperature and lights 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

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 turns on the burner only when needed
  • Thick fiberglass insulation minimizes off-cycle heat and energy loss
  • Cast-iron heat exchanger and titanium burners constructed for years of reliability
  • Available in six different sizes for ultimate installation flexibility
  • 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-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 turns on the burner only when needed
  • Thick fiberglass insulation minimizes off-cycle heat and energy loss
  • Compatible with traditional radiator systems
  • Comes in nine different sizes for installation anywhere in your home
  • Burns natural gas or convertible 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

Reach us at 815-788-6283 or schedule an appointment online so our experts at Campbell's Tempracure in Crystal Lake can help you find the right boiler for you, or fix your boiler so it is running as smoothly and efficiently as possible.