Lennox
Conservator 90 Series gas-fired water boiler reaches new heights in efficiency with an AFUE of 90%. Key to the product's high efficiency is its cast aluminum heat exchanger, which transfers heat 3 times fasten than cast iron. Boiler is about 80 pounds lighter than standard water boilers and is easy to install in a basement, closet or alcove. Product has earned the Energy Star logo.
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