About Clothes Washer Efficiency

Almost all of the energy used by clothes washers is for heating the hot water used to wash the clothes. Only about 10 percent or less of the energy is used by the electric motor which runs the clothes washer. So, the best way to improve the efficiency of a clothes washer is to reduce the amount of water, particularly hot water, that is needed to wash the clothes.

The efficiency of a clothes washer is measured by a term called the energy factor. It is somewhat similar to the miles per gallon for a car, but in this case the measure is cubic feet of washing capacity per kilowatt-hour of electricity. The minimum allowed energy factor rating for standard capacity clothes washers is 1.18.

Federal law requires that EnergyGuide labels be placed on all new clothes washers. These labels are bright yellow with black lettering. When you're shopping for the best buy in a new appliance, EnergyGuide labels can save you money.

Content Provided By the DOE

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