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Lenox GWB9-IH High-Efficiency, Gas-Fired Water Boiler

With an efficiency rating of up to 90% AFUE, the GWB9-IH Boiler allows you to stay comfortable during even the coldest weather, without worrying about energy costs.

Efficiency Rating (AFUE) up to 90
Energy Star® ENERGY STAR logo ENERGY STAR® Qualified
Warranty

15-Year Limited Warranty on Heat Exchanger; 10-Year Limited Warranty on covered parts

Smart with energy use

With an efficiency rating of up to 90% AFUE, the GWB9-IH Boiler allows you to stay comfortable during even the coldest weather, without worrying about energy costs.

Flexible installation means you have options

The GWB9-IH is designed to integrate easily into a traditional radiator system. Its lightweight and compact design allows flexible installation inside your home. Fuel flexibility lets you use either natural or LP gas as a heat source.

Tested and proven for dependable performance

Every unit is fire-tested and inspected prior to shipping to ensure the highest possible degree of operating reliability. So you can take comfort knowing the boiler will deliver dependable performance, season after season.

Comforting warmth, right when you want it

The cast-aluminum heat exchanger in the GWB9-IH transfers heat three times faster than conventional cast-iron heat exchangers. So you enjoy rapid warmth when you need it.