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Verified Reviews for Generator Install pros in Diamond, IL

*The Angi rating for Generator Install companies in Diamond, 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 Diamond, 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 May 03, 2026

Find Generator install pros in Diamond

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

Serving Diamond, 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

46 neighbors recently requested a quote
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Avatar for No Static Electricity
No Static Electricity
5.0(
27
)

Serving Diamond, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Warranties offered

"Great work! Came out of his way on an off day to help with my power being out. Did good work and had my power back on in the same day. He is very knowledgeable and very straight up about what he might have to do, what he needs, and what his time frame is like. If you're looking for a trustworthy no BS Electrician call No Static Electricity!!"
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+6

Response time1 day
25 neighbors recently requested a quote
Recommended by76%of homeowners
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Avatar for Flowing Through Connections, Inc.
Flowing Through Connections, Inc.
4.9(
28
)

Serving Diamond, IL and surrounding areas

Approved

In business since 2000

Emergency services offered

Credit card accepted

"Ralph and Ralph Jr were a pleasurer to work with. They did a great job installing TVs and mounts at all of your medical clinics. They were very responsive to all of our questions and gave us exactly what we were looking for. They stand by their work and will make sure everything is done to your satisfaction. I would hire them again for any other installation, electrical, or networking work we need for our business."
Fusion5 Cellphone Signal Booster
2-Way Antenna Splitter
Yagi - Outside Antennas. Pole mounted to A/C
Yagi - Outside Antennas. Pole mounted
Telephone/Network Equipment

+8

Response time5 hrs
5 neighbors recently requested a quote
Recommended by88%of homeowners
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Avatar for Julio Marroquin
Julio Marroquin
5.0(
13
)

Serving Diamond, IL and surrounding areas

Approved

In business since 2017

Free estimates

Small jobs welcome

"Found Julio through a friend had a couple estimates done before hand but was either overestimated or no shows Julio came out the same week and finished before the expected time. Top guy for sure he carries his quality in his work. 10/10 highly recommend"
Response time1 hour
Response rate100%
1 neighbors recently requested a quote
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Avatar for Mid America Lightning Protection
Mid America Lightning Protection
4.5(
99
)

Serving Diamond, 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 Express Electric
Express Electric
4.8(
18
)

Serving Diamond, IL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I hired Raul to install outdoor outlets for an exterior kitchen, the work was done cleanly and professionally. I was so pleased with the quality and reliability that I rehired him for one of my rental properties to install additional outlets in each bedroom in an older house. Both jobs were completed efficiently, and communication was clear and throughout. I would definitely recommend him and would hire him again for future projects."
6 neighbors recently requested a quote
Recommended by11%of homeowners
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Avatar for Mr Electric of the Western Suburbs
Mr Electric of the Western Suburbs
3.5(
506
)

Serving Diamond, IL and surrounding areas

Approved

In business since 1994

Free estimates

Emergency services offered

"He came prepared to do the job and talked to us about the lighting options.  Once decided he went and bought the lighting fixture, returned and efficiently installed them.  Great job."
Under cabinet lighting
Island lights
Ceiling fan
Ceiling lights
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+8

59 neighbors recently requested a quote
Recommended by84%of homeowners
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Showing 1-10 of 138
Generator Install questions, answered by experts

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

You can expect a diesel generator to last for up to 30,000 hours of use, 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. 

The Diamond, 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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