Lennox GWB84-IE Boiler.

Efficient Operation in Colder Climates

Offers an efficiency of up to 84.4% AFUE, meaning it can deliver energy savings compared to an older boiler. So even if winter brings its worst, you’ll stay comfortable without worrying about energy use. Up to 84.4% of fuel is converted into usable heat.

Made Tough, to Deliver Reliable Warmth

Includes extra attention to durability, with features like a cast-iron heat exchanger and corrosion-resistant burners.

Integrates Easily Into Your Home

If you have a traditional system, it will fit perfectly and provide precise heating comfort all winter long.

Smart Design Means Reliable Operation

An electronic ignition allows it to turn on only when heat is needed, and reduces the possibility for the flame to go out like a standard pilot light. Layers of thick fiberglass insulation minimize heat loss.