Get matched with top generator install pros in Marengo, IL

Q: How does a generator transfer switch save me money?

• <div><p>It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you&rsquo;ll have to pay between <b>$400 and $2,500</b> to have the transfer switch installed, you&rsquo;ll recoup that amount later on when you don&rsquo;t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect <a href="https://www.angi.com/articles/how-to-hook-up-generator-to-house.htm">hook up of a generator to your home</a>. </p></div>

Q: Do you have to turn off the main breaker when using a generator?

• <div><p>As a safety measure, you should always turn off the main breaker while operating your generator&rsquo;s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.</p></div>

Q: What’s the normal lifespan of a diesel generator?

• <div><p>You can expect a diesel generator to last for up to <b>30,000 hours of use</b>, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. </p></div>

Q: How do I reduce AC startup power for a generator?

• <div><p>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.</p></div>

Q: Can you switch fuel types for a whole-house generator?

• <div><p>In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.</p></div>

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Verified Reviews for Generator Install pros in Marengo, IL

*The Angi rating for Generator Install companies in Marengo, 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 Marengo, 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 January 20, 2026

Reviewed in February 2025
The tech did the testing. Called SolarEdge to get the parts I needed sent right to my house. He installed the parts the next day.
Sunivation Solar
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Reviewed in March 2024
Thank you! Fair pricing, professional and timely service! I appreciate it!! â ï¸ â ï¸ â ï¸ â ï¸ â ï¸
Always Great Landscaping
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Reviewed in June 2023
Very courteous salesperson, prompt and professional installer
Bath Planet of Chicago
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Reviewed in April 2022
good install professional polite tidy replace & install new shower in 1 day answered questions
Bath Planet
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Reviewed in December 2021
Dave worked us in to accommodate our busy schedules. He arrived very promptly, did a thorough inspection and made recommendations about the home that were practical and spot-on. When the environmental tests came back, he explained everything in laymanâ s terms and was very patient with...
Gardner Environmental Services
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Reviewed in September 2020
Mike did a great job installing the generator! Highly recommend Mikus Electric!!!
Mikus Electric & Generators, Inc.
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Reviewed in July 2020
Jerry was the perfect contractor for our kitchen remodel. From start to finish our project went smooth. Jerry is a true professional, competitive pricing, great quality cabinet doors, our kitchen is exactly as we hoped it would be! The backsplash install is beautiful as well. We were so...
Hodgins Remodeling
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Reviewed in December 2018
Had a new bathroom shower installed it look great such an upgrade from the old one. The installer did a nice job he laid down some covers on my floor. When over the install asks where I wanted my fixtures. Great cleanup.
Bath Planet of Buffalo
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Reviewed in August 2018
Working with Mid-Town was a very pleasant experience. Being that it was our first time using a contractor, the job completed smoothly. We had granite counter tops installed with a stone back splash and new sink and garbage disposal. Rob (sales manager) worked with us directly. The quote was well...
Midtown Home Improvements
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Reviewed in March 2018
They were responsive, they were excellent, they help us pick out what would work for our bedroom, And they come to the house with samples to look at & choose. And then they come to install & show you how to work everything. I have recommended them to others that also was satisfied with their...
Blazeks Home Furnishings Ltd
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