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Lennox GWB9-IH High Efficiency Gas-Fired Water Boiler Offers 90% AFUE Efficiency Rating
The Lennox GWB9-IH high efficiency gas-fired water boiler offered by Logical Heating and Air Conditioning delivers an AFUE efficiency rating of 90%. This rating means that it converts a full 90% of your fuel into usable heat. Delivering warmth quickly with a cast-aluminum heat exchanger that transfers heat three times faster than conventional cast iron, which is ideal for Minnesota's climate.