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Best generator install pros near Mchenry, IL

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Top-Rated Generator install pros in Mchenry - 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 Mchenry, 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
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+3

21 neighbors recently requested a quote
Avatar for AGI Lab, Inc.
AGI Lab, Inc.
5.0(
24
)
Fixed Generator - Install

Serving Mchenry, IL and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Anton is a great and diligent worker. He ran a pipe from my main panel in the basement to my garage. Given the distance and the difficulty of the work he turned a 2 man job into a 1 man job. He was extremely considerate and flexible. I will use him on all of my electrical needs moving forward."
Kitchen and living room
Kitchen
Old electrical panel
New elecrical panel
New electrical panel Siemens

+7

Response time9 hrs
Recommended by100%of homeowners
Avatar for Your IT Guy
Your IT Guy
4.7(
47
)
Portable Generator - Install

Serving Mchenry, 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
8 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Spotlight Construction Co.
Spotlight Construction Co.
4.6(
24
)
Portable Generator - Install

Serving Mchenry, IL and surrounding areas

Approved

In business since 2005

Free estimates

Customers say: Quality work

We are an electrical company with more than ten years of experience, we are licensed and insured. We can take on a wide range of residential and commercial electrical projects to include full installation for additions and remodels, as well as, wiring/panel upgrades, and a variety of other electrical projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.\n\nNot certified Electrical Vehicle Charging Station Installer, if you do not need rebate from ComEd we can install EV outlets!

Response time11 hrs
Response rate90%
2 neighbors recently requested a quote
Avatar for Toptec Heating, Cooling, Plumbing & Electrical, Inc.
Toptec Heating, Cooling, Plumbing & Electrical, Inc.
4.4(
614
)
Fixed Generator - InstallFixed Generator - Repair

Serving Mchenry, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Emergency services offered

"Very nice technician, got some very old pipes off. Final system installed is very nice. We looked at a couple of different approaches, settled on a nice system that fits the fireplace nicely, looks great, and starts easily."
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%
10 neighbors recently requested a quote
Avatar for Kind Electric, LLC
Kind Electric, LLC
5.0(
6
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Mchenry, IL and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

At Kind Electric, we provide reliable, high-quality residential and commercial electrical services to homes and businesses throughout McHenry County and the surrounding communities. Whether you need emergency electrical repairs, panel upgrades, custom lighting installations, or routine wiring maintenance, our skilled team delivers safe, code-compliant workmanship done right the first time. We pride ourselves on transparent communication, fair pricing, free estimates, and standing behind our work with a clear warranty. \n\nKind Electric - Kindess Included

Chandelier Install
Panel Before / After
1 neighbors recently requested a quote
Avatar for Steele Electric, Inc.
Steele Electric, Inc.
5.0(
2
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install+1 more

Serving Mchenry, IL and surrounding areas

Approved

In business since 2006

Free estimates

Emergency services offered

With over 24 years of experience Steele Electric, Inc., is your solution for all your electrical needs. We are a family owned and operated business, and are fully licensed, bonded and insured. We offer a wide range of electrical services from maintenance and remodel to new construction for residential and commercial clients. We take great pride in our extreme professionalism, timeliness, and superior customer service on every job. We are very proud of our reputation and protect it the only way we know how, by providing quality workmanship you can trust, skilled and knowledgeable electricians and an excellent rapport with our clients. We make sure to develop a lasting relationship, so that the next time service is needed there will be no question on who to call. Check out our 5 star reviews from happy customers. Call us today! Satisfaction guaranteed! And don't be "shocked" when we show up on time and get the job done right!

Lighting Applications
Lighting Applications
Lighting Applications
Lighting
Lighting

+17

Response time7 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Generator Install FAQs, answered by experts

As a safety measure, you should always turn off the main breaker while operating your generator’s backup breaker. In addition, you should also switch off all appliance breakers so you don't have a power surge when the main breaker turns back on. And finally, turning off the main breaker prevents back-feeding, which endangers utility workers with the risk of electrocution. Back-feeding could also destroy the electrical circuits of your neighbors if they use the same power network.

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 some situations, yes. Never try to put biofuel into any home generator without checking the specifics first. If a generator has the ability to run on diesel, it can also run pure biofuel (the clear kind made from seed oils, for example). But if you are using biofuel made from animal fats or vegetable oils, the generator will need significant modifications before it can handle a sludgier type of biofuel.

Costs range from $500 to $2,500, depending on generator type and installation complexity.

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 Mchenry, IL homeowners’ guide to generator installs

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