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Dave Lennox Signature® Collection GWB9-IH BoilerHigh-efficiency, gas-fired water boiler The innovative GWB9-IH boiler achieves the highest levels of efficiency with an AFUE rating of 90%. At the heart of the GWB9-IH is a cast-aluminum heat exchanger, which transfers heat three times faster than conventional cast-iron. |
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Here are some of the top features of the GWB9-IH:Efficiency rating of up to 90% AFUE. ENERGY STAR® qualified which means it meets or exceeds U.S. federal guidelines for energy efficiency. Cast-aluminum heat exchanger transfers heat up to three times faster than traditional cast-iron exchangers. Easy integration with traditional radiator systems to provide precise heating comfort, regardless of outdoor temperatures. |
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*Shipped as natural gas; convertible to LP.
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