Gas-Fired Water Boilers Provide Years of Efficient Heat.

When you want warm, even heat from an energy-efficient source, C-N-O Comfort Zone in Saint Peters would like to find a gas-fired water boiler to meet your needs. With many ENERGY STAR® qualified choices, we’re positive we have the Lennox® gas-fired water boiler for you.

Look at the many features of our high-efficiency boilers.

GWM-IE Boiler

With a 95% AFUE rating,* the GVM-IE boiler is ENERGY STAR® qualified and up to 40% more efficient than conventional boilers. It contains an electronic ignition control, which coordinates power to the burner to your household’s usage to help ensure it gets you the most fuel savings possible while helping your home stay at the temperature you desire.

  • Strong, self-cleaning, stainless steel heat exchanger converts wasted energy into usable heat
  • Sealed combustion keeps operating noise at a minimum
  • Modulating capability matches 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 makes unnecessary 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

Simple to use with an existing, traditional radiator system, the GWB9-IH boiler is ENERGY STAR qualified. What’s more, it boasts an AFUE rating of 90%.* Additionally, it moves heat as much as three times faster than a traditional cast-iron exchanger, thanks to its cast-aluminum heat exchanger.

  • Enduring, heavy-gauge steel cabinet with baked-on paint finish
  • [Compact|Condensed|Small]38] design for flexible installation
  • Minimized noise from sealed combustion
  • Electronic ignition monitors water temperature and lights the burner only when needed
  • Burns natural gas or can be converted 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

Notably more efficient than an older boiler, the GWB8-IE boiler carries an 84.4% efficiency rating.* Even better is that it can work with traditional radiator systems.

  • Electronic ignition monitors water temperature and lights the burner only when needed
  • Thick fiberglass insulation significantly reduces off-cycle heat and energy loss
  • Cast-iron heat exchanger and titanium burners constructed 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

This standard-efficiency boiler will be reliable year after year because it’s built from quality materials, including a long-lasting cast-iron heat exchanger and durable stainless steel burners.

  • Electronic ignition oversees 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 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

Our team at C-N-O Comfort Zone in Saint Peters is happy to help you find the right gas fired water boiler for you, or help you maintain your existing boiler. Set up your appointment online, or by calling us at 636-578-1777.