New residential water heater energy efficiency standards are coming quickly for the manufacturers, distributors, wholesalers and contractors that produce and install these appliances. In less than one year, the new minimum energy efficiency standards will be in effect for water heaters manufactured after April 15, 2015. The 2010 Department of Energy Final Rule on energy efficiency mandates a higher Energy Factor (EF) rating on virtually all residential water heating products, including gas, ...

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