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Verified Reviews for Generator Install pros in Normal, IL

*The Angi rating for Generator Install companies in Normal, 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 Normal, 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 October 27, 2025

Find Generator install pros in Normal

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)

Serving Normal, IL and surrounding areas

Approved (Corporate)

In business since 1992

Free estimates

Emergency services offered

We are the experts in the field of Whole Home Generator Sales and Installation, with over 20 years of experience in the game.\nWe provide turn-key installation by licensed professionals - 24 hour emergency service - Remote Monitoring - Long term maintenance and service by factory trained technicians.

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+3

40 neighbors recently requested a quote
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Avatar for Imperial electric
Imperial electric
5.0(
13
)

Serving Normal, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"The service guy came out very quickly. Had a smart thermostat installed. He walked me through setting up the app. Did a fast and a great job. I highly recommend this company if you want it done and done right."
125 neighbors recently requested a quote
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Avatar for Mid America Lightning Protection
Mid America Lightning Protection
4.5(
99
)

Serving Normal, IL and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"Absolutely one of the best companies I have ever hired. Quick response to my inquiry to have a lightning protection system installed on my house. They showed up literally the next day and had the job done within a few hours. Professional installation at its finest. Price was more than fair and the owner is very knowledgeable and works hard to earn your business highly recommended"
Indianapolis
Trucking company
Indianapolis
Indiana Illinois
Indiana Illinois

+70

Response time6 hrs
Response rate94%
3 neighbors recently requested a quote
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Avatar for A Vet and A Van
A Vet and A Van
5.0(
13
)

Serving Normal, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"Project done professionally, they were courteous, cleaned up after themselves, took their time doing job right. Made recommendations and gave options on work to be done. Reasonably priced. I will be using them again in near future."
Response time2 days
6 neighbors recently requested a quote
Recommended by58%of homeowners
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Avatar for Accent Tel USA
Accent Tel USA
4.9(
12
)

Serving Normal, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"They were able to get a technician to our office same day on a Friday . Phones were fixed and we were back in business. Excellent Service!"
Response time3 hrs
Response rate99%
5 neighbors recently requested a quote
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Avatar for Edelman Cooling, Plumbing, Electric & Solar
Edelman Cooling, Plumbing, Electric & Solar
5.0(
5
)

Serving Normal, IL and surrounding areas

Approved (Corporate)

In business since 2003

Free estimates

Emergency services offered

Here at Edelman, we’re your trusted local team for HVAC heating & cooling services around northern Illinois. We provide residential repair, replacement, installation, and maintenance.\n\nEdelman is built on 23 years of experience, a strong work ethic, and a commitment to delivering the best service to every client and customer. We stand behind our work with a 100% Satisfaction Guarantee on all service, repairs, and replacements.

Edelman
Mini Split
Mini Split
Mini Split
Mini Split

+5

44 neighbors recently requested a quote
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Avatar for Ls industrial repair
Ls industrial repair
5.0(
2
)

Serving Normal, IL and surrounding areas

Approved

Free estimates

Small jobs welcome

Credit card accepted

"He showed up in a timely manner. He did the job quickly. There was a shorted wire that he had to re-run and pull through the existing pipe. So far it's all working great and has not needed to return. So far everything working great."
3 neighbors recently requested a quote
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Generator Install questions, answered by experts

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

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.

The Normal, 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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