Get matched with top generator install pros in Richmond, IL

Q: What happens if my whole-house generator is too small for my AC?

• <div><p>An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home&rsquo;s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.</p></div>

Q: What size whole house generator do I need to run central AC?

• <div><p>To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right <a href="https://www.angi.com/articles/whole-house-generator-sizing.htm">generator size</a>. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.</p></div>

Q: Can you run a natural gas generator constantly all day?

• <div><p>Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there&rsquo;s no limit to the supply of natural gas, they don&rsquo;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.</p></div>

Q: How long can a whole house generator run?

• <div><p>As long as they have enough fuel, whole-house generators can run for weeks at a time (400 to 500 hours) without suffering too much wear and tear. However, this type of extensive use isn&rsquo;t ideal if you want to extend the life of your generator.</p><p>Two important points. First, some generators may need you to periodically check oil levels every day or so and refill as necessary for safe operation. Second, if your generator uses a fuel tank, keep it regularly full so it doesn&rsquo;t suddenly shut off. Many backup generators can run through a full tank in a day when they are powering large portions of a home.</p></div>

Q: What size generator do I need for my house?

• <div><p><a href="https://www.angi.com/articles/what-size-generator-do-i-need.htm">Generator size requirements</a> vary wildly among properties, but typical generator sizes are listed below based on home square footage:</p><ul><li><p>1,000 sq ft: 6&ndash;9 kW</p></li><li><p>1,500 sq ft: 7&ndash;10 kW</p></li><li><p>2,000 sq ft: 10&ndash;14kW</p></li><li><p>2,500 sq ft: 12&ndash;16kW</p></li><li><p>3,000 sq ft: 16&ndash;20kW+</p></li></ul><p>Unfortunately, home square footage isn&rsquo;t always a good indicator of generator size requirements. Instead, you should call in a professional to discuss which items in your home you&rsquo;d like to run via your generator. They can calculate peak and average consumption for those items and then size your generator appropriately for optimal performance.</p></div>

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Verified Reviews for Generator Install pros in Richmond, IL

*The Angi rating for Generator Install companies in Richmond, 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 Richmond, 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 06, 2026

Reviewed in June 2025
Brenda is fantastic. My kitchen sparkles when she is done. She is very detailed and gets every nook and cranny.
Clean Home by Brenda
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Reviewed in May 2025
Price competitive. Easy to communicate with and professional from initial meeting and later discussion to add an item. Installation team arrived as promised and removed a vinyl shower, an over sized jacuzzi and completed installation and cleanup within eight hours. We're very pleased with our...
Premier Home Pros, LLC
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Reviewed in November 2024
Great work, service, and post-sale support. They installed a 17kw whole house back-up generator about 6 years ago - still get top notch service, and the generator has been a life saver many times.
Mikus Electric & Generators, Inc.
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Reviewed in March 2024
I have used Jett’s since they open. I recently was having an issue at our new home concerning duct work and the Technician evaluated the situation and made a great recommendation, unfortunately though in the inspection it was determined that my furnace (installed in 1996 by the previous owner)...
Jett's Heating & Air Inc.
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Reviewed in December 2023
Very smooth process and planning, in the end the installation was very well done, completely satisfied. I would recommend Accurate with absolutely no reservations. Brian Scott was not eager to close the deal and left no negative impression. Moreover made very good suggestions and answered all...
Advocate Contracting and Restoration Services, Inc.
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Reviewed in May 2022
Oakwood has serviced our generator for over 10 years and recently installed an EV charger for my new car. Oakwood always provides excellent quality service and are easy to schedule with and always returns calls. Oakwood is local and has been in business for quite a number of years.
Oakwood Electric & Generator
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Reviewed in December 2020
Jason is a very well qualified professional with fair pricing, an excellent & personable demeanor with customers. My wife & I would recommend his generator repair & maintenance services to all prospective customers.
JB Gen Service Company
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Reviewed in October 2020
Very thorough. Sales process was very informative and answered every question I could think of. There was an inspection prior to full commitment to ensure panels could be installed and there weren't any issues. Installation took 4 men a half day. The installers were great; very conscientious....
Sunrun
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Reviewed in February 2020
installed water heater per schedule. identified one new piping problem and resolved it. resecured exhaust pipe to resolve banging problem. cash payment discount.
JVS Plumbing Company
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Reviewed in September 2018
Ryan was wonderful in every aspect of the job, from the initial meeting to the installation. He kept us informed about the status of the project and was timely with the installation. The finished product is better than I could have imagined. We plan to use Closet Improvements, Inc for future...
Closet Improvements, Inc.
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