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TRUSTED BY NORTHFIELD, IL HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon34
    Verified generator installs reviews

Verified Reviews for Generator Install pros in Northfield, IL

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

Avatar for LSVG Electrics Inc
LSVG Electrics Inc
4.8(
57
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Northfield, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"PERFECT / KNOWLEDGEABLE / EFFICIENT / HONEST would be the words I would use to describe LSVG Electrics. I had a circuit in the kitchen that was not getting any power even though the breaker in the main panel wasn't tripped so randomly picked LSVG Electrics for their assistance. Lou came out exactly at the time he said he would and quickly diagnosed the problem to be a burnt wire in a J-box in the basement and repaired it. If you are looking for an electrician that you can have confidence in ... please call LSVG Electrics ... because they know their stuff. I've only called electricians on a handful of occasions but LSVG electrics certainly was the BEST!!! and will use them for any other electrical issues I might encounter ... Highly Recommended ... 5 of 5 stars Regards, Keith K Algonquin IL"
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 Northfield, 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
Request Quote
Avatar for Mr. Electric of Highland Park
Mr. Electric of Highland Park
4.9(
46
)
Portable Generator - Install

Serving Northfield, 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
32 neighbors recently requested a quote
Recommended by56%of homeowners
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Avatar for Imperial electric
Imperial electric
5.0(
18
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install

Serving Northfield, 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."
136 neighbors recently requested a quote
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Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,285
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Northfield, 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
27 neighbors recently requested a quote
Recommended by87%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 Northfield, 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
Additional Photos
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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Avatar for M.T. Kelley Electric LLC
M.T. Kelley Electric LLC
5.0(
4
)
Generator - Install - For Business

Serving Northfield, IL and surrounding areas

Approved

In business since 1994

Warranties offered

Credit card accepted

"Hello, MTK electric was fantastic to deal with, their communication was top notch, they were very transparent about the entire process and the overall price was fair. Would definitely look for their assistance in the future."
Response time8 hrs
Response rate99%
2 neighbors recently requested a quote
Request Quote
Avatar for D-Tech Systems
D-Tech Systems
4.8(
9
)
Generator - Install - For Business

Serving Northfield, IL and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"This was the first time I used D-Tech Systems. I needed an electrician to reinstall a chandelier. Daniel Malachowski (with D-Tech Systems) was polite, extremely efficient, very conscientious about keeping the work area clean, and did a professional job in a short timeframe. During that same visit, he was able to resolve a couple of other electrical items and showed me how I could fix a simple item myself. I will use D-Tech Systems in the future and would definitely recommend them and, in particular, Daniel M."
Electrical 200A
dtech-systems
Electrical
Electrical 400A
TV Install

+5

Response time1 day
Recommended by100%of homeowners
Request Quote
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Generator Install questions, answered by experts

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.

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.

If you’re wondering whether gas generators produce carbon monoxide, know that natural gas generators do not produce carbon monoxide if they are functioning properly, as natural gas burns cleanly. However, if the generator malfunctions and the gas does not burn completely, there is potential for carbon dioxide to be produced. To prevent malfunctions, it's crucial to perform regular maintenance, including running the generator weekly and scheduling professional inspections every 6 to 12 months. Also, be sure to test your carbon monoxide detectors regularly to ensure they function in the rare case of the generator producing carbon monoxide.

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.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

The Northfield, 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