|Efficiency||Up to 95% AFUE|
|Fuel Source||Natural Gas|
|Burner Type||Stainless Steel Mesh|
|Warranty||15-Year Limited Warranty on Heat Exchanger; 10-Year Limited Warranty on covered components|
Lennox GWM-IE Boiler
High-Efficiency, Gas-Modulating Condensing Water Boiler.
Design that’s highly innovative and efficient. The GWM-IE boiler offers an efficiency of up to 95% AFUE, meaning it converts up to 95% of its fuel into useable heat. Fuel flexibility lets you use either natural or LP gas as a heat source.