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

Home Backup Generator Sizing Calculator

Find the Right Home Backup Generator For You

  • Call Us 1-844-242-3494 to Speak With a Customer Service Representative

Prepare for the next power outage with the #1 selling brand of home standby generators

This quick and easy Home Standby Sizing Calculator will provide you with 3 possible generators to fit your needs, along with estimated installation costs, and financing options.  Just provide your zip code and how much of your home you want to back up (all of it or just selected appliances) and the calculator will do the rest!

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.
  • How would you like to manage your power?

  • Ensure that your entire home is backed up. Enjoy the comforts of home as if the power never went out.
  • Your estimated power needs:

  • power gauge

Selecting whole house provides a backup generator recommendation based on your home's 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 home's specific backup power needs.

You must select "How would you like to manage your power" checkbox option first.

  • 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
  • Washer w/Gas Dryer 0
  • Electric Dryer 0
  • Extras

  • Hot Tub 0
  • Sauna 0
  • Pool 0
  • Window AC 0

Selecting "Select My Options" provides a backup generator recommendation based on your home's 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.

You must select "How would you like to manage your power" checkbox option first.

  • 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
  • Washer w/Gas Dryer 0
  • Electric Dryer 0
  • Extras

  • Hot Tub 0
  • Sauna 0
  • Pool 0
  • Window AC 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.

Installation

HOW MUCH WILL INSTALLATION COST?

Every home is different, and so is every installation. The placement of the generator, the amount of materials required, and the installation of the natural gas or LP fuel source all make estimating installation costs unique. A simple installation might cost about $2,000, but it can be more than that depending upon your specific situation. The best way to know for sure is to get a free in-home assessment. They will listen to your needs, assess your home, and give you a detailed quote. All at no charge, with no obligation, and no pressure.  (Note: installation cost estimate shown does not include taxes and permits.)

Financing

Special financing available - or low monthly payments

Based on your location and selections

Purchase your unit for as low as:
per month*
With reduced 9.99% APR and Fixed Monthly Payments equal to 1.25% of promo purchase amount until paid in full.

On purchases with your Generac credit card. $29 account activation fee will apply. Based on $  MSRP and $2,000 installation cost. Monthly payments shown are required for 132 months with 9.99% APR promotional financing on your Generac credit card for purchases made   to  . Total payments of $ . Does not includes taxes and permits. Click here for more details.
** Actual monthly payment will be determined at the time of purchase.

*Subject to credit approval. Minimum monthly payments required. Available in the U.S. only. See dealer for details.

Ready for the Next Step?

Schedule Your Free In-Home Assessment

You Call Us

to Speak With a Representative

Call Us at 1-855-899-0055
To Speak With a Customer Representative.
See if you qualify for financing

Download Buyer's Guide

OR

We'll Call You

Complete the form and we will contact you

(*) Required Fields

Please select a country.
Please select a state.
Preferred Method of Contact*

Date entered is not at least 7 days from today.

Thank you for requesting a free, no-obligation quote on a standby generator system. We will be in contact with you shortly.

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.
Invalid data. Please fix before submitting.

IS YOUR HOME READY?

Call to Learn More

Call Us at 1-855-899-0055
The best way to find out what generator you need is to request a risk free quote.
Chat Now
Chat With a Customer Service Representative

Request Your Free Quote

*Required Fields