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Verified Reviews for Generator Install pros in Bloomington, IL

*The Angi rating for Generator Install companies in Bloomington, 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 Bloomington, 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 Bloomington

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

Serving Bloomington, 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

44 neighbors recently requested a quote
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Avatar for Imperial electric
Imperial electric
5.0(
17
)

Serving Bloomington, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"I had an outrageous quote (nearly $2K) from a big multi service contractor and looked here for a small business electrician. Daniel of Imperial Electric came out straight away and fixed the problem down the line that had taken out power to two of the kitchen outlets. It was a puzzle but he solved it for $260. I will be referring him to friends and family."
153 neighbors recently requested a quote
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Avatar for RAB Electric, Inc.
RAB Electric, Inc.
New to Angi

Serving Bloomington, IL and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

With over 15 years of experience, RAB Electric has been serving the community since 2005. We provide top notch quality service with a smile! Contact us today for a consultation!

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Avatar for Horizon Electric USA, Inc.
Horizon Electric USA, Inc.
4.7(
17
)

Serving Bloomington, IL and surrounding areas

In business since 2015

Free estimates

Emergency services offered

"Luis was absolutely phenomenal. He installed for us a 240volt connection in our garage for our electric car. He gave us the best price, was on time, very professional, and took the time to explain everything to us before and during the process of installation. Incredible, meticulous work. Thank you Luis."
CUMMINS 50KW LVP GENERATOR
225 AMP NEMA 3R TRANSFER SWITCH
PCV piping
Meter Panel Assembling
Ready for concrete

+8

Response time1 day
Recommended by100%of homeowners
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Avatar for Edelman Heating, Cooling, Plumbing, Electric & Solar
Edelman Heating, Cooling, Plumbing, Electric & Solar
5.0(
5
)

Serving Bloomington, IL and surrounding areas

In business since 2003

Free estimates

Emergency services offered

Here at Edelman, we’re your trusted local team for HVAC, plumbing, electrical, and solar services across Central 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.

Central AC Unit
Central AC Unit
Central AC Unit
Central AC Unit
Central AC Unit

+17

4 neighbors recently requested a quote
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Avatar for Superior Facilities
Superior Facilities
5.0(
5
)

Serving Bloomington, IL and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"Very excellent work. They were reasonably priced and had great work ethic. I would use them again and definitely recommend them."
Response time3 hrs
Response rate100%
Recommended by100%of homeowners
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Showing 1-10 of 20
Generator Install questions, answered by experts

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 cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

Yes, natural gas generators can work without electricity. Natural gas generators are a common type of backup or whole-house generator that operates when the electrical grid isn’t working. The trick is using a transfer switch (which usually needs to be installed with the generator) that safely switches the home electrical system from the power grid to generator power when needed.

Portable generators provide backup power for essential appliances during outages and are easy to relocate.

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.

The Bloomington, 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