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How Much Does It Cost to Run an Electric Blanket?

Updated February 21, 2017

Electric blankets convert energy stored as electricity into heat energy. Blankets are available using different technologies and are rated at different wattages, so the running costs vary according to the type of blanket and its temperature settings. Expect to pay anything between 50 cents and £1.30 per week.

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Wattage and Temperature

The amount of electricity used to convert electrical energy into heat is measured in watts. Higher-wattage blankets use more electricity than lower-wattage blankets, and maintaining higher temperatures uses more watts than running the blanket at lower temperatures.

Blanket Type

Under identical usage, thermostatically controlled blankets are more efficient and cost less to run than blankets constantly producing heat. Any blanket left on standby or switched off by its thermostat continues to consume power as the blanket transformer converts 110 volts to a lower voltage.

The Running Cost

As of September 2010, the average price of a kilowatt of electricity in the U.S. is between 7.93 cents in Washington and 27.85 cents in Hawaii. Running a typical 100-watt double blanket for 10 hours a night costs between 7.93 cents and 27.85 cents per night.

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About the Author

David Robinson

David Robinson has written professionally since 2000. He is a Fellow of the Royal Geographical Society and the Royal Meteorological Society. He has written for the "Telegraph" and "Guardian" newspapers in the U.K., government publications, websites, magazines and school textbooks. He holds an honors Bachelor of Arts in geography and education and a teaching certificate from Durham University, England.

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