How Much Is a Generac

Whole Home Generator?

How do I size the correct Generator for my home?


It varies so much from home to home. We’ll need to consider your power demands. For example, a homeowner with a 1,500-square-foot home, window air conditioner, gas stove, and Silverado in the garage is very different than the same home with central air, an electric stove, and a Tesla in the garage.


As a rule of thumb, your generator needs will start at your home’s square footage, times 3. A 2500-square-foot home will need a 7500-watt backup generator at a minimum.


Beyond the minimum, we need to consider how much of your home you want to be powered in an emergency power outage. All of it? Some of it?


One of the most common options is to match the generator to the total size of your electrical service. A standby generator that is 20,000 watts can power an entire 200-amp electrical service. You’ll have your whole home powered when the power goes off, just as if the power was on.

Additional considerations include:

  • How much distance is between the generator and your gas or propane lines? 
  • How far is the distance from the generator to your electrical panel? 
  • Is the home’s electrical system in generally good shape, or are repairs needed to make your new Generac Generator safe and efficient?

All of these considerations need to be accounted for to come up with a usable estimate.  Online estimators don’t do these calculations, which makes customers shocked by the difference between the estimate and the actual cost. 


To set you up for success, we ask that you schedule a call today! We will set up a no-stress, no-pressure, completely free conversation about your home, your needs, and a generator that will fit your budget.

Generac Whole Home or Small Business Generators

  • 40kW Generac Protector Wharehouse /Retail, Extravagant Home
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