2nd October 2019

sfgate
18

How much electricity does a 50 gallon hot water heater use?

Calculating Energy Usage. An average water heater runs three hours daily. A 50-gallon, 5,500-watt water heater with a .90 EF and an electricity rate of $.16 per kilowatt hour will cost $781 to operate each year. Most water heaters include a label listing the annual operating cost.
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