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Verified Reviews for Generator Install pros in Gilman, IL

*The Angi rating for Generator Install companies in Gilman, 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 Gilman, 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 25, 2025

Find Generator install pros in Gilman

Avatar for Tri-State Water, Power & Air

Tri-State Water, Power & Air

9526 Corsair Rd
New on AngiNew on Angi
•Approved Pro

Tri-State Water, Power & Air

9526 Corsair Rd
New on AngiNew on Angi
•Approved Pro
100 local quotes requested
33 years of experience

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

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

Avatar for Accent Tel USA

Accent Tel USA

3501 Bessie Coleman Blvd, Suite 25203
4.89(
9
)
•Approved Pro

Accent Tel USA

3501 Bessie Coleman Blvd, Suite 25203
4.89(
9
)
•Approved Pro
Customers say: Quick response
16 years of experience
Free onsite estimate

Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.

"Telephone System - Install or Upgrade - For Business "

Anthony O on September 2025

Our Company provides a one-stop solution for all of your voice, internet, and telecom needs. Leveraging the Cloud we provide your Office state-of-the-art telephones for little or no upfront cost striving to keep your monthly costs the same. Sound too good to be true? Give us a call and we will show you how.

"Telephone System - Install or Upgrade - For Business "

Anthony O on September 2025

Swinderman Engineering Services

5414 Goldeneye Road
4.88(
30
)
•Approved Pro

Swinderman Engineering Services

5414 Goldeneye Road
4.88(
30
)
•Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

Swinderman Engineering Services is Central Illinois’ leading Technology Installation Company. We handle all of your low voltage cabling and custom installation needs from Home Theater to Surveillance Camera Systems to Access Control.

"I was very pleased with my tv mount installation. Only took an hour and it looks great. They were able to perform the service within two days after I made an inquiry. I will use them for any other home audio/video projects that I need to have done."

John G on May 2021

Swinderman Engineering Services is Central Illinois’ leading Technology Installation Company. We handle all of your low voltage cabling and custom installation needs from Home Theater to Surveillance Camera Systems to Access Control.

"I was very pleased with my tv mount installation. Only took an hour and it looks great. They were able to perform the service within two days after I made an inquiry. I will use them for any other home audio/video projects that I need to have done."

John G on May 2021

Avatar for C-U Hvac, Plumbing & Electric

C-U Hvac, Plumbing & Electric

1153 County Road 1200 E
1.00(
1
)

C-U Hvac, Plumbing & Electric

1153 County Road 1200 E
1.00(
1
)
Free onsite estimate
"The company was paid to diagnose and fix a leak to my roof. They determined that a small patch of roof needed to be replaced. A couple of weeks later the leak continued from the same spot in the ceiling. The tech again came out and claimed it was another leak in a different spot although the leak inside was in the exact same spot. They did not fix the problem the first time and wanted more money for this “new leak.”"

Shaun C on March 2020

"The company was paid to diagnose and fix a leak to my roof. They determined that a small patch of roof needed to be replaced. A couple of weeks later the leak continued from the same spot in the ceiling. The tech again came out and claimed it was another leak in a different spot although the leak inside was in the exact same spot. They did not fix the problem the first time and wanted more money for this “new leak.”"

Shaun C on March 2020

Gatto Electric, Inc

4552 N. Sayre Avenue
No reviews yet

Gatto Electric, Inc

4552 N. Sayre Avenue
No reviews yet
14 years of experience

Licensed, bonded and insured contractors, 24/7 emergency service, paperless billing, excellent customer service, professional technicians, custom electrical design planning, custom installations, custom remodeling.

Licensed, bonded and insured contractors, 24/7 emergency service, paperless billing, excellent customer service, professional technicians, custom electrical design planning, custom installations, custom remodeling.

Avatar for Popejoy Plumbing, Heating, and Electric Inc.

Popejoy Plumbing, Heating, and Electric Inc.

502 West Mazon Avenue
3.67(
3
)

Popejoy Plumbing, Heating, and Electric Inc.

502 West Mazon Avenue
3.67(
3
)
Customers say: Quick response
42 years of experience

Our mission is to combine high quality products with professional reliable service and build trusting lifelong relationships with our clientele, so that all of us within the company can experience the pride and satisfaction of being an integral part of a job well done.

Our mission is to combine high quality products with professional reliable service and build trusting lifelong relationships with our clientele, so that all of us within the company can experience the pride and satisfaction of being an integral part of a job well done.

Avatar for Popejoy Inc

Popejoy Inc

203 S10th St
4.75(
12
)

Popejoy Inc

203 S10th St
4.75(
12
)
Customers say: Super punctual
41 years of experience

People pleasing solutions since 1984. Popejoy Incorporated is the premier dealer of all the latest commercial and residential products including Trane, Weil McLain, Generac, Northstar Products, Delta, and many more.

People pleasing solutions since 1984. Popejoy Incorporated is the premier dealer of all the latest commercial and residential products including Trane, Weil McLain, Generac, Northstar Products, Delta, and many more.

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)

My Classic Car Trader LLC

312 Prospect Ave
2.00(
1
)
53 years of experience

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Sales, Service & Rebuilding of Antique and Classic Car Components such as, Carburetors, Starters, Generators, Fuel Pumps, Double & Single Action Fuel Pump Rebuilding, Water Pumps, Hydraulic Top Pumps, Distributors, and DELCO Knee Action Shocks, We also carry a complete line of NOS and NORS parts. We offer FREE Technical advice for any YEAR Classic Car 609-462-7412

"Beware. They charged me double shipping even after I told them I would wait so I wouldn’t have to pay two shipping fees. The last item was a fuel pump that I had a problem with. I have made 4 calls to ask for help with no return call. Poor"

Frank H on July 2020

Lee Legler Construction & Electric Inc

181 Wolf St Unit A
4.91(
11
)

Lee Legler Construction & Electric Inc

181 Wolf St Unit A
4.91(
11
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Generac Automatic Home Generator Dealer ,Sales and Service Home and small business electric installations, repairs and upgrades Generator Maintenance and repair Generac Home Standby Generators in stock

"Lee and his crew were very professional and did an amazing job. We now have a Generac whole house automatic standby generator ready to go if our electric service ever fails. My wife and I and our contractor all have an app that gives us the generator's status, maintenance requirements, run time, etc., etc.....if the unit fails to start (for example) we will all get an alert and they have 24/7 service so this is extremely reassuring."

Russell P on January 2023

Generac Automatic Home Generator Dealer ,Sales and Service Home and small business electric installations, repairs and upgrades Generator Maintenance and repair Generac Home Standby Generators in stock

"Lee and his crew were very professional and did an amazing job. We now have a Generac whole house automatic standby generator ready to go if our electric service ever fails. My wife and I and our contractor all have an app that gives us the generator's status, maintenance requirements, run time, etc., etc.....if the unit fails to start (for example) we will all get an alert and they have 24/7 service so this is extremely reassuring."

Russell P on January 2023

Avatar for Griffin Electric Inc

Griffin Electric Inc

340 S Schrader Ave
3.67(
3
)

Griffin Electric Inc

340 S Schrader Ave
3.67(
3
)
Customers say: Quick response
86 years of experience

We offer financing through FTL Finance for large projects such as new Furnace, Air Conditioning and Boiler Systems.

"Woke up w/o heat on a frigid January morning. After failing to get the furnace back on, we called Griffin. The owner took the call and arrived within 30 minutes. He diagnosed the problem, ran to town to get a new part, and had it installed and up-and-running in less than 2 hours, all w/o breaking the bank. He was friendly, professional, and honest."

Kurt J on January 2022

We offer financing through FTL Finance for large projects such as new Furnace, Air Conditioning and Boiler Systems.

"Woke up w/o heat on a frigid January morning. After failing to get the furnace back on, we called Griffin. The owner took the call and arrived within 30 minutes. He diagnosed the problem, ran to town to get a new part, and had it installed and up-and-running in less than 2 hours, all w/o breaking the bank. He was friendly, professional, and honest."

Kurt J on January 2022

Showing 1-10 of 13
Generator Install questions, answered by experts

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

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.

While natural gas generators are costly, they’re a great option for standby power due to the reliability of natural gas as a fuel source. Unlike other fuels, natural gas is delivered through underground pipes, making outages extremely rare and less likely to be affected by the elements. As long as the area isn’t prone to earthquakes, they offer an unlimited supply of natural gas that doesn’t degrade over time or require storage in tanks.

Whole-house generators can last 20 to 40 years with normal operation and proper maintenance. If you look up the specifications for your generator, you may be able to find a lifespan rated in hours of operation. Life expectancy will vary depending on how often and for how long you use the generator each year. Choosing a fuel with low impact like natural gas or diesel can help generators last as long as possible.

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

The Gilman, 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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