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TRUSTED BY NORTHBROOK, IL HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon45
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Northbrook, IL

*The Angi rating for Generator Install companies in Northbrook, 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 Northbrook, 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 March 24, 2026

Find Generator install pros in Northbrook

Avatar for Rob - Lynn Power Generators, LLC
Rob - Lynn Power Generators, LLC
4.4(
31
)
Fixed Generator - InstallPortable Generator - RepairFixed Generator - Repair+4 more

Serving Northbrook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2004

Emergency services offered

Warranties offered

"I have been looking for a reasonably priced generator repair company for some time. The person who answered the phone was extremely courteous and seemed to go out of her way to help me with my service needs. Within 30 minutes the owner called back and based on my description of the problem was able to suggest a simple fix over the phone that I could do and which solved my problem. I will definitely call them for all my future needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+26

9 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for LSVG Electrics Inc
LSVG Electrics Inc
4.8(
57
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Northbrook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"They did an amazing job installing my sign. They explained everything perfectly that needed to be done along the way. Very friendly and professional! These are definitely the guys for the job! Highly recommend"
Electrical Project
Electrical Project
Electrical Project
Electrical Project
Electrical Project

+589

Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
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Avatar for MPower Generators, Inc.
MPower Generators, Inc.
4.8(
25
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Repair - For Business

Serving Northbrook, IL and surrounding areas

Approved

In business since 1999

Free estimates

Emergency services offered

"I'm very satisfied with his work. I had used him for 16 years and I had him install two different generators. I never had any problems at all and he is very responsive; that is why I have recommended him before."
Powered by MPower Generators
Power outages are a thing of the past.
Gravel base
Gravel base needs to be compacted
Prefabricated cement pad

+8

Response time1 day
4 neighbors recently requested a quote
Recommended by95%of homeowners
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Avatar for Mr. Electric of Highland Park
Mr. Electric of Highland Park
4.9(
46
)
Portable Generator - Install

Serving Northbrook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Warranties offered

"After talking to multiple companies, Jay from Mr.Electric showed up. He was very professional and the only one who took the time to plan what I needed. He did a great job installing new outlets and switches for my new kitchen. Ask for Jay!"
Electrical Safety
Electrical Repairs
Lighting
EV
Panel

+26

Response time7 hrs
35 neighbors recently requested a quote
Recommended by56%of homeowners
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Avatar for Your IT Guy
Your IT Guy
4.9(
45
)
Portable Generator - Install

Serving Northbrook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Warranties offered

"Your IT Guy did an excellent job! Chuck and Eric were professional, friendly, knowledgeable, efficient, and effective. We hired them to install several new circuits, outlets, and receptacles. They do so much more than IT! Hire them, you won’t regret it!!"
Response time6 hrs
26 neighbors recently requested a quote
Recommended by80%of homeowners
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Avatar for Imperial electric
Imperial electric
5.0(
17
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Northbrook, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Assessed all outlets and changed those that were improperly installed and could damage things plugged into them, and grounded the outlets that were not grounded. 19 recepticles in all. Price was good and arrived on time, and clean."
150 neighbors recently requested a quote
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Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,284
)
Fixed Generator - InstallPortable Generator - InstallFixed Generator - Repair+4 more

Serving Northbrook, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"Four Season service was awesome. The installers were friendly, professional, and knowledgeable. The installers cleaned up work area after they finished the job."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
30 neighbors recently requested a quote
Recommended by87%of homeowners
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Musial Electric
4.6(
98
)
Fixed Generator - InstallPortable Generator - Install

Serving Northbrook, IL and surrounding areas

Approved

In business since 1996

Free estimates

Credit card accepted

"VERY pleased! Was able to make an appointment ASAP. On time, courteous, knowledgeable, trustworthy, honest, and very friendly. Bo knows his stuff! How he adroitly repaired my Casablanca ceiling fan switch & tested it in short order was amazing. I'm now having him service my Generac generator on a routine basis. I'd call Bo for anything electrical any time!"
Response time8 hrs
3 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Toptec Heating, Cooling, Plumbing & Electrical, Inc.
Toptec Heating, Cooling, Plumbing & Electrical, Inc.
4.4(
613
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Northbrook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Emergency services offered

"I used Toptec to install my furnace. They did a great job from start to finish. Adam was very knowledgeable and business oriented."
Duct Cleaning Before/After
Additional Photos
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Barrington Geothermal Lake Heat Exchangers
Barrington Geothermal - WaterFurnace Geothermal Heating/Cooling Systems with Desuperheaters

+48

Response time1 day
Response rate100%
16 neighbors recently requested a quote
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Watts Electrical & Construction Services
4.5(
52
)
Generator - Install - For Business

Serving Northbrook, IL and surrounding areas

Approved

In business since 2005

Free estimates

Credit card accepted

"Pete was very nice and he was very knowledgeable about his job. I would recommend Watts Electrical to my friends and family. Pete gave my son in law a great idea and explained how to do it, he said that it was a good idea to save money, they just bought the house and he was very very nice. He did not make it the day before but he called to reschedule and he showed up the next day and was very quick to find the problem and explained how to fix one. We would recommend him for all of your electrical needs."
Response time4 hrs
4 neighbors recently requested a quote
Recommended by95%of homeowners
Request Quote
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Showing 1-10 of 139
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. 

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.

If you have a transfer switch properly installed, the generator and main electrical power cannot feed the system at the same time. However, you should still shut off the power at your main circuit breaker panel before activating the generator. If you do that, you’ll simply need to shut off the generator and reset your circuit breaker once the local power comes back on.

Carbon monoxide emissions aren’t only dangerous to human life, but they also harm our planet. While natural gas generators emit lower levels of CO than other fuel sources, there are still ways to reduce emission levels. For example, shop around for an eco-friendly generator that complies with current emission standards. Also, make sure your generator is serviced regularly to avoid CO buildup. 

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Northbrook, 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