Gas Vs Electric Hot Water Heater Efficiency

Electric water heaters tend to have at least 98 thermal efficiency many are 99 percent or more.

Gas vs electric hot water heater efficiency.

And they have no combustible byproducts. Electric water heaters are not only efficient but also don t have any fuel that could leak or explode. Standard gas water heaters have an ef of about 50 to 60. Most gas fired water heaters have an energy factor ef number set by the u s.

This is due to the way that the heaters operate. Department of energy to help consumers compare the efficiency of similar appliances. Unlike electric heaters gas water heaters can be dangerous to operate in small spaces that allow gas to build up. On the other hand.

Similarly electric heaters can have higher energy factor ratings than gas heaters. In comparison gas heaters usually have between 80 and 85 percent. Electric water heaters require less space. A gas or electric water heater s energy factor ef is a measurement that.

The bigger the ef number the more efficient the appliance. Energy efficiency while gas hot water heaters cost less to run due to the lower cost of natural gas electric heaters are actually more efficient. Electric water heaters particularly electric heat pump water heaters can have higher ef ratings than gas water heaters. All this can offset the higher cost of electric power to some extent.

A gas heater must vent the spent gas which also takes some of the heat with it.