Lennox GWM-IE Boiler

Steam Heat From the Efficiency Experts

The GWM-IE Boiler offers an efficiency of 95% AFUE, meaning it converts 95% of its fuel into usable heat. Up to 40% more efficient than conventional boilers.

Smart Design, Smarter Comfort

Inside the heat exchanger shell of the GWM-IE, specially designed helical tubes optimize heat transfer, allowing near-complete recovery of usable heat from the fuel source. The modulating gas dials the temperature in to exactly where you want it.

Technology With the Power to Save You Money

The modulating capability of the GWM-IE allows the burner to fire at different levels of heat, down to 20% of its full capacity. So your comfort and energy use are always kept in perfect balance.

Quietly Innovative

Continuous modulation allows the GWM-IE to maintain a precise temperature without constantly cycling between on and off. This not only reduces operating sound levels, but it also increases reliability.

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