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Verified Reviews for Generator Install pros in East Alton, IL

*The Angi rating for Generator Install companies in East Alton, 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 East Alton, 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 December 02, 2025

Find Generator install pros in East Alton

Avatar for Bates Electric - St Louis

Bates Electric - St Louis

4.70(
82
)

Bates Electric - St Louis

4.70(
82
)
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers

For 29 years, Bates Electric, Inc. Has proudly served the St. Louis Metro area and surrounding areas. Please contact us to speak with one of our Customer Service Specialists for service rates. ALL OF OUR TECHNICIANS ARE LICENSED, BONDED, AND DEPARTMENT OF LABOR CERTIFIED.

"Worst electric company - seriously. Im a former employee of 6 years. I ended up leaving the company after they refused to pay me for work I had performed. It was a mere 450$ but that is not the point. They are one of the lowest paying companies (at least while I was there) and they are VERY unsafe. I was instructed by Andy Bates (co ceo) to perform several service changes without Ameren disconnecting their power coming into the home - meaning I put my life in danger working on linemans work without proper PPE and violated OSHA policies. They send second year apprentices to do service call work because they make far less money but they charge the same rate (I was one of them). So there is a good chance you get someone still in training showing up at your house to perform work. Please support an honest business and dont feed these greedy idiots. They still owe me 450$!!"

Christopher L on July 2025

For 29 years, Bates Electric, Inc. Has proudly served the St. Louis Metro area and surrounding areas. Please contact us to speak with one of our Customer Service Specialists for service rates. ALL OF OUR TECHNICIANS ARE LICENSED, BONDED, AND DEPARTMENT OF LABOR CERTIFIED.

"Worst electric company - seriously. Im a former employee of 6 years. I ended up leaving the company after they refused to pay me for work I had performed. It was a mere 450$ but that is not the point. They are one of the lowest paying companies (at least while I was there) and they are VERY unsafe. I was instructed by Andy Bates (co ceo) to perform several service changes without Ameren disconnecting their power coming into the home - meaning I put my life in danger working on linemans work without proper PPE and violated OSHA policies. They send second year apprentices to do service call work because they make far less money but they charge the same rate (I was one of them). So there is a good chance you get someone still in training showing up at your house to perform work. Please support an honest business and dont feed these greedy idiots. They still owe me 450$!!"

Christopher L on July 2025

Trinity Heating, Cooling, & Refrigeration LLC

4.55(
381
)

Trinity Heating, Cooling, & Refrigeration LLC

4.55(
381
)
Customers say: True professional
2010 years of experience

Please contact us by phone : 314-780-2118 - Thanks ! Trinity Heating, Cooling, and Refrigeration is a full service mechanical contractor with over 20 years of experience in the industry. Ask how you can get a utility cash rebate and a federal tax credit with upgrading you heating and cooling system to a more efficient one.

"Excellent! The job was done very well"

Scott B on December 2020

Please contact us by phone : 314-780-2118 - Thanks ! Trinity Heating, Cooling, and Refrigeration is a full service mechanical contractor with over 20 years of experience in the industry. Ask how you can get a utility cash rebate and a federal tax credit with upgrading you heating and cooling system to a more efficient one.

"Excellent! The job was done very well"

Scott B on December 2020

Grasser Electric

4.85(
26
)

Grasser Electric

4.85(
26
)
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers

GRASSER ELECTRIC is a premier electrical contractor servicing both commercial and residential customers in the St. Louis, St. Charles County and surrounding areas since 1975. We have diversified service and installation capabilities and we offer service during our normal business hours as well as emergency service. Our friendly and well-trained staff have many years of experience and will treat your home as if it were their own. We believe in following through with all our customers until your satisfaction is assured.

GRASSER ELECTRIC is a premier electrical contractor servicing both commercial and residential customers in the St. Louis, St. Charles County and surrounding areas since 1975. We have diversified service and installation capabilities and we offer service during our normal business hours as well as emergency service. Our friendly and well-trained staff have many years of experience and will treat your home as if it were their own. We believe in following through with all our customers until your satisfaction is assured.

KING AIR CONDITIONING & HTG

5.00(
9
)

KING AIR CONDITIONING & HTG

5.00(
9
)
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

King Air Conditioning & Heating has been in business since 1974 and is a Bryant Factory Authorized Dealer and a GeoComfort geothermal dealer. We offer free estimates on new equipment and charge by the job not by the hour. King Air Conditioning & Heating is EPA & NATE certified. King Air also offers emergency repair service.

King Air Conditioning & Heating has been in business since 1974 and is a Bryant Factory Authorized Dealer and a GeoComfort geothermal dealer. We offer free estimates on new equipment and charge by the job not by the hour. King Air Conditioning & Heating is EPA & NATE certified. King Air also offers emergency repair service.

Oller Electric

5.00(
4
)

Oller Electric

5.00(
4
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Oller Electric serves the Springfield and surrounding areas for all it's electrical needs. We service residential and commercial. We provide: Installation Service Standby Generator Installation Residential Electrical Projects You can count on as and we offer you the reassurance of being licensed, insured, and bonded. Call today to tell us about your projects to let us see what we can do for you and consult you throughout the process. Call Oller Electric where we get to know your project to give you what you want.

Oller Electric serves the Springfield and surrounding areas for all it's electrical needs. We service residential and commercial. We provide: Installation Service Standby Generator Installation Residential Electrical Projects You can count on as and we offer you the reassurance of being licensed, insured, and bonded. Call today to tell us about your projects to let us see what we can do for you and consult you throughout the process. Call Oller Electric where we get to know your project to give you what you want.

C & K Heating and Cooling, Inc.

5.00(
6
)

C & K Heating and Cooling, Inc.

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

C &K is a family owned full service heating, cooling and plumbing company. We specialize in commercial, residential, refrigeration and plumbing. We offer very competitive pricing for all projects big or small. Financing is available.

C &K is a family owned full service heating, cooling and plumbing company. We specialize in commercial, residential, refrigeration and plumbing. We offer very competitive pricing for all projects big or small. Financing is available.

Avatar for EFS Energy

EFS Energy

5.00(
2
)

EFS Energy

5.00(
2
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

As the premier solar and energy efficiency professionals in St. Louis and the Midwest, EFS Energy strives to help our customers achieve energy independence by reducing use and generating clean, renewable energy. Specializing in commercial and agricultural solar power installations, our team has the experience and skill to design and install a custom system based on each individual customer’s needs.

As the premier solar and energy efficiency professionals in St. Louis and the Midwest, EFS Energy strives to help our customers achieve energy independence by reducing use and generating clean, renewable energy. Specializing in commercial and agricultural solar power installations, our team has the experience and skill to design and install a custom system based on each individual customer’s needs.

Showing 1-10 of 22
Generator Install questions, answered by experts

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.

In many cases, you’ll need a permit or basic inspection to install one of these large generators. Since they include significant alterations to your home electrical system and many produce exhaust fumes, local governments often require jumping through a few hoops for general safety purposes. Your installer may be able to help you with these permits.

Yes. You can connect your home back-up battery to a generator with its designated charger. Be sure that the output of the generator matches the input requirements for the battery for best results.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

The East Alton, 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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