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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
38 neighbors recently requested a quote
Recommended by84%of homeowners
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Generator Install questions, answered by experts

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

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. 

Many services include assembling the unit and securing it in the window. Confirm with your provider.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

In some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

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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