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Verified Reviews for Generator Install pros in Vandalia, IL

*The Angi rating for Generator Install companies in Vandalia, IL 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 Vandalia, IL 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 September 18, 2026

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

ADS Electric Company LLC
New to Angi
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+1 more

Serving Vandalia, IL and surrounding areas

Approved

In business since 1999

Free estimates

Offers commercial services

We are a locally owned and operated company. We value honesty and integrity in all aspects of our business. We offer a variety of home improvement services that are customized to each individual project. We pride ourselves on the quality of our work, as well as our commitment to outstanding results. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

Response time3 hrs
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J&M Electric
4.0(
2
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Vandalia, IL and surrounding areas

In business since 2008

Free estimates

"I spoke to this company over the phone that told them that I was looking for somebody to trace my household telephone lines. I have a short somewhere and I would like to find somebody that could find it and rewire the telephone system to bypass the short. This company does do that type of work and didn't know of anybody that did."
Recommended by100%of homeowners
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ADS Electric Company
0.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Vandalia, IL and surrounding areas

In business since 1999

Free estimates

Credit card accepted

Here at ADS Electric Company, we have over 10 years of experience in the business. We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business.

Recommended by100%of homeowners
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MVB Contracting, Inc.
New to Angi
Generator - Install - For Business

Serving Vandalia, IL and surrounding areas

In business since 1965

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. We have consistently focused on the needs of our customers, providing personalized attention and a stress-free experience.

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Generator Install FAQs, answered by experts

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.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The average cost to install a home generator is $5,200, but total costs can range from $500 to $18,000 or more. The final price depends on several factors, including the generator's size, type, brand, fuel source, and the cost of labor and assembly. The generator's size is the most significant cost factor, as units that can power larger homes with higher energy demands cost more.

Cost breakdowns by generator type are typically as follows:

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

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

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

To ensure you get the right size unit for your needs without overpaying, consider hiring an electrician to calculate the electrical load of your essential appliances. It is also recommended to get at least three quotes from qualified installers to find the best fit for your budget.

The Vandalia, IL 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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