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*The Angi rating for Generator Install companies in Fairfax, MN is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Fairfax, MN is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on August 23, 2026

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Avatar for Trapper Electric
Trapper Electric
4.4(
14
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Fairfax, MN and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"They did a good job in a timely fashion. There are a few loose screws. Other than that. The quality is good."
New 200 amp
33 neighbors recently requested a quote
Recommended by84%of homeowners
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Generator Install questions, answered by experts

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

The Fairfax, MN homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

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