What Size Generator Do I Need to Power My House During an Outage?

3000-5000 watts

Homeowners can often power most household appliances using between 3000 and 6500 watts. If your home has a smaller furnace and city water, you can generally expect that 3000-5000 watts will cover your needs. If you have a larger furnace and/or a well pump, you will likely need a 5000 to 6500 watt generator.

Here’s what uses the most energy in your home:

  • Cooling and heating: 47% of energy use

  • Water heater: 14% of energy use

  • Washer and dryer: 13% of energy use

  • Lighting: 12% of energy use

  • Refrigerator: 4% of energy use

  • Electric oven: 3-4% of energy use

  • TV, DVD, cable box: 3% of energy use

  • Dishwasher: 2% of energy use

  • Computer: 1% of energy use Useful



















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