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Home Backup <strong>Generator Sizing Calculator</strong>

Home Backup Generator Sizing Calculator

Find the Right Home Backup Generator For You

  • Call Us 1-888-436-3722 to Speak With a Customer Service Representative
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Step 1:Your Home

  • Please enter a valid postal code (##### or ### ###).
  • Please select a home size.

Step 2:Select Your Power Needs

Choose what your power needs are from the list below or select whole house if you want everything to run at the same time during a power outage.

Please select an option.
  • Power Everything

  • Ensure that your entire home is backed up. Enjoy the comforts of home as if the power never went out.
  • Customize it

Selecting whole house provides a backup generator recommendation based on your homes size and corresponding outlets and lighting requirements and assumes natural gas appliances in the baseline calculation. If your home is an all electric home and includes electric appliances like an electric range, electric clothes dryer, electric water heater, etc. You can add these items below to accurately reflect your homes specific backup power needs.

  • The Essentials

  • Sump Pump 0
  • Well Pump 0
  • Electric Water Heater 0
  • Gas Furnace 0
  • Central Air 0
  • Refrigerator 0
  • Freezer 0
  • Appliances

  • Electric Oven/Stove 0
  • Microwave 0
  • Dishwasher 0
  • Garage Door 0
  • Electric Dryer 0
  • Extras

  • Computer 0
  • WiFi 0
  • Hot Tub 0
  • Sauna 0
  • Pool 0
  • Security 0

Selecting "Customize It" provides a backup generator recommendation based on your homes size and corresponding outlets and lighting requirements and assumes natural gas appliances in the baseline calculation. If your home is an all electric home and includes electric appliances like an electric range, electric clothes dryer, electric water heater, etc. You can add these items below to accurately reflect your homes specific backup power needs.

  • Lighting & Outlets

  • Master Bedroom 0
  • Bedroom 0
  • Office 0
  • Living Room 0
  • Dining Room 0
  • Family Room 0
  • Kitchen 0
  • Kitchen Outlets 0
  • Hall/Stair 0
  • Bathroom 0
  • Basement 0
  • Laundry Lights 0
  • Appliances

  • Washer w/Gas Dryer 0
  • Electric Dryer 0
  • Electric Oven/Stove 0
  • Electric Cooktop 0
  • Microwave 0
  • Dishwasher 0
  • Garbage Disposal 0
  • Refrigerator 0
  • Freezer 0
  • Electric Water Heater 0
  • Garage Door 0
  • Extras

  • Sump Pump 0
  • Well Pump 0
  • Gas Furnace 0
  • Boiler 0
  • Window AC 0
  • AC or Heat Pump 0

Customized Results:

This calculator is intended for estimating purposes only. We recommend having an authorized dealer analyze your specific requirements before making a purchase decision.

Your Next Steps

Now that you understand your options, how would you like to proceed?

If you don’t use all your appliances at the same time (most people don’t) then a smaller generator, paired with a Generac power-management Smart Switch, offers the next best thing to whole-house coverage.

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Generac Stock Ticker

  • NYSE
  • GNRC
  • $57.72
  • 4/17/2014 4:02 PM EST