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

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

Read more 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. In fact, it earned a 95% AFUE rating.* To maximize fuel savings, it features 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 comfortable.

  • Strong, self-cleaning, stainless steel heat exchanger converts waste energy into usable heat
  • Sealed combustion keeps noise at a minimum
  • To meet your comfort needs, the modulating capacity allows the burner to fire as low as 20% of 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 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 flexibility in installation
  • Sealed combustion keeps noise at a minimum
  • Electronic ignition oversees water temperature and lights 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

Far more efficient than an older boiler, the GWB8 boiler boasts an 84.4% efficiency rating*—it also works with traditional 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 reliability
  • Offered 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

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 minimizes off-cycle heat and energy loss
  • Compatible with traditional radiator systems
  • Available 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

Give us a call at 314-838-9800 or schedule an appointment online so our staff at B & B Heating & Cooling in Florissant can help you find the right boiler for you, or get your current boiler running as smoothly and efficiently as possible.