How Many Watts of Electricity does a Space Heater use?

Real power-use measurements from a space heater.

How Much Power does a Space Heater use

Space Heater: 1477 Watts


  • A space heater has a fan and a heating coil. They can use a lot of electricity, but are sometimes more efficient at heating people up, because they are almost always used within a few feet of the people who want heating. Modern electric heaters have thermostats to turn them off if they overheat, but they can still start a fire if you position them in front of flammable materials.
  • varies from 1203 (low) to 1477 watts (high)

Power Use

  • Watts: 1477
  • Kilowatts: 1.477 Kw.

Operation Cost

  • cost per minute: 30 hundredths of one cent (0.3 ¢)
  • cost per hour: 17.7¢
  • cost per day: $1.42
  • cost per month: $26.95

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Power use of these items was actually tested. Individual items will vary, but these are the actual measurements.