Top-rated generator install pros.

Best generator install pros near Freeport, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Freeport, IL?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Freeport, IL

*The Angi rating for Generator Install companies in Freeport, 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 Freeport, 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 June 17, 2026

Top-Rated Generator install pros in Freeport - Updated Nov 2026

Avatar for Tri-State Water, Power & Air
Tri-State Water, Power & Air
5.0(
5
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business

Serving Freeport, 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.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+3

21 neighbors recently requested a quote
Request Quote
Avatar for ELECTRICAL SERVICES BY CNC LLC
ELECTRICAL SERVICES BY CNC LLC
4.8(
26
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Freeport, IL and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

"The pro explained the problem and offered a solution. He explained why it should be fixed. To eliminate problems, he fixed the GFI outlet."
8 neighbors recently requested a quote
Recommended by52%of homeowners
Request Quote
The Electric Guys LLC
5.0(
6
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Freeport, IL and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

"I first asked for a quote back in February of 2024. When I received the quote I decided to wait on this project. Then we lost power for 2 days due to a storm. I then decided it was time and contacted the contractor again. He sent me an updated quote and the project was scheduled. It's now installed and I'm very happy with how it turned out. Hopefully it will be a long time before we need to use the generator because we lose our power. But we are ready when it happens. I will definitely use this company again for any electrical jobs that come up. Andrew and his crew were great."
Response time1 day
Recommended by100%of homeowners
Request Quote
Generator Install FAQs, answered by experts

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.

You may need a permit for a portable generator if you’ll be installing a transfer switch for your primary residence or similar work. Otherwise, a permit for other uses may not be necessary. Check your local building codes or ask a local generator installer for more information about your local regulations.

It is safe to run a generator continuously, but you must follow safety protocols to ensure personal and home safety. Read the manufacturer’s instructions for specific recommendations, but the general recommendation is to turn generators off overnight or when you’re away from the house. Overworked generators can pose a fire hazard and if your generator is not in a well-ventilated area, running it continuously could lead to carbon monoxide poisoning.

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’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.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

The Freeport, IL homeowners’ guide to generator installs

From average costs to expert advice, get all the answers you need to get your job done.

See all articles