Efficiency Of A Gas Fired Boiler - silesiangold.pl
Understanding Residential Boiler Efficiency Ratings | Weil . Jan 08, 2016 · As of September 1, 2012, all boilers manufactured have the following minimum AFUE ratings: 82% for a gas-fired hot water boiler, 80% for a gas-fired steam boiler, 84% for an oil-fired hot water boiler and 82% for an oil-fired steam boiler.
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