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Verified Reviews for Generator Install pros in Fairfax, SC

*The Angi rating for Generator Install companies in Fairfax, SC 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, SC 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 March 17, 2026

Top-Rated Generator install pros in Fairfax - Updated Nov 2026

Avatar for Mock Electric, Inc.
Mock Electric, Inc.
5.0(
4
)
Fixed Generator - Install

Serving Fairfax, SC and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"Mock Electric did a great job and all in one complete work 8AM-4PM. Jeff and Josh were very professional, informative and easily approachable. The new electric installation went great and exactly how I wanted and requested. Hats off! Great Job and thanks!"
5 neighbors recently requested a quote
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Avatar for The Home Depot - Generators
The Home Depot - Generators
2.5(
1
)
Fixed Generator - Install

Serving Fairfax, SC and surrounding areas

In business since 2003

Free estimates

Small jobs welcome

Today, we're proud to be the world's largest home improvement retailer. In 2,300 stores across North America, we aspire to excel in service – to our customers, associates, communities and shareholders. That's what leadership means to us. That's The Home Depot difference.

Generators
Generators
Generators
Generator
Generators

+5

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Avatar for Five Star Contracting, LLC
Five Star Contracting, LLC
2.9(
7
)
Portable Generator - Repair

Serving Fairfax, SC and surrounding areas

In business since 2017

Free estimates

Credit card accepted

"We had our bathroom shower and floor remodeled. Their craftsmanship is excellent. They were timely and Courteous. Excellent in every way"
Reccesses Can
Five Star Contracting
Cameras
Led Lighting
Led Lighting

+8

Response time1 day
Recommended by75%of homeowners
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Immaculate Lighting and Power, LLC
New to Angi
Fixed Generator - Install

Serving Fairfax, SC and surrounding areas

In business since 2016

Credit card accepted

Welcome to Georgia's Premier Electrical Service. With over 15 years of experience in the electrical industry, Immaculate Lighting and Power, LLC., knows what it takes to provide the very best in terms of customer service and quality. We take on a wide range of electrical projects to include full installation for additions and remodels as well as generator installs, wiring and panel upgrades, and a variety of other jobs. Just look at our reviews below, our customers rave about our service, and for good reason. Our technicians take pride in our quality of work and our commitment to outstanding results. We're committed to providing our customers with personalized service for each individual project we take on. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction. \n

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Avatar for Menace Electric
Menace Electric
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Fairfax, SC and surrounding areas

Welcome to Menace Electric electrical services — your trusted local electrician for reliable, high-quality electrical work.\n\nI’ve proudly owned and operated this small business for a little over two years, providing dependable electrical services to homeowners and businesses in our community. As a detail-oriented electrician, I take pride in delivering safe, efficient, and professional results on every project — no shortcuts, no compromises.\n\nWhether you need residential wiring, lighting installation, panel upgrades, troubleshooting, or maintenance, I’m committed to providing honest work, fair pricing, and top-tier craftsmanship.\n\nAt Menace Electric, customer satisfaction and safety is our top priority. I look forward to continuing to grow with the community and being your go-to electrician for years to come.\nAs always, we look forward to seeing you. ~ Dawson Robnett.

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Generator Install FAQs, answered by experts

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.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

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.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

Generators are usually sized by running watts and starting watts. Ideally, you’ll want a generator that can offer both the necessary running watts and starting watts for everything you need to power without going beyond 90% of its capacity. Calculate your home’s electrical load based on the breakers in your home or adding up the appliance and lighting needs of connected rooms.

The Fairfax, SC 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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