Top-rated generator install pros.

Get matched with top generator install pros in Thomaston, CT

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Thomaston, CT?

Select your specific project to find the pro for you.

Verified Reviews for Generator Install pros in Thomaston, CT

*The Angi rating for Generator Install companies in Thomaston, CT 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 Thomaston, CT 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 03, 2025

Find Generator install pros in Thomaston

Avatar for Connoles Electric, LLC
Connoles Electric, LLC
4.8(
82
)
Generator - Install - For BusinessPortable Generator - Install

Serving Thomaston, CT and surrounding areas

Approved

In business since 1984

Free estimates

Credit card accepted

"Ted and Robert arrived, got right t to it and within a few hours we had 2 ceiling fans installed, one which had no existing light so it was a more involved project. They were professional and stuck to their original quote! To say we are impressed is an understatement. We strongly recommend using Connole Electric."
1 neighbors recently requested a quote
Recommended by98%of homeowners
Request Quote
Avatar for OnTheGrid Electric , LLC
OnTheGrid Electric , LLC
5.0(
12
)
Fixed Generator - InstallGenerator - InstallGenerator - Install - For Business+1 more

Serving Thomaston, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Free estimates

Credit card accepted

"Great job by On The Grid. Help me out with installing electrical on my new patio. Very knowledgeable, neat, and easy to work with. Would definitely hire them again for any electrical needs."
Standby generator automatic transfer switch with main panel
Landscape lighting
Fuse panels to be removed in multifamily house with external circuit switches (via insurance requirement)
Portable generator panel interlock
Lighting for a parking lot

+16

Response time1 day
3 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Swanson Electric, LLC
Swanson Electric, LLC
5.0(
31
)
Portable Generator - Install

Serving Thomaston, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Troy was great. He installed our vehicle charger super fast and everything was perfect. He was very fair with his price quote as well!!"
Panel
Response time5 hrs
Response rate99%
23 neighbors recently requested a quote
Request Quote
Avatar for Anchor Electric Motor, LLC
Anchor Electric Motor, LLC
4.7(
46
)
Portable Generator - Repair

Serving Thomaston, CT and surrounding areas

Approved

In business since 1950

Free estimates

Credit card accepted

"Nat did an awesome job getting my generator up an running. He even cam to my house to get it done. I will be using them again for any time I need my generator serviced or repairs."
Response time1 day
Recommended by95%of homeowners
Request Quote
Avatar for Supreme Electric, LLC
Supreme Electric, LLC
4.1(
122
)
Fixed Generator - Install

Serving Thomaston, CT and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Excellent and speedy installation of my doorbell camera. I will call again."
BETTER BUSINESS BUREAU RATING
Recessed and pendant lighting
Home theatre wiring and lighting
Whole house generator wiring
Generator install

+49

Response time3 hrs
Response rate94%
60 neighbors recently requested a quote
Request Quote
Avatar for MB Electric
MB Electric
4.9(
8
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Thomaston, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"MB Industries, LLC did a masterful job on my project. The owner, Matt, was on-time, personable, polite, professional, and skilled. He was meticulous in getting the job done right?not just ?good enough.? I will reach out to MB Industries LLC in the future. Thanks again Matt. 5 stars for sure!"
MB Industries
MB Industries
MB Industries
MB Industries
MB Industries

+46

Response time8 hrs
1 neighbors recently requested a quote
Request Quote
Avatar for Firemans Services LLC
Firemans Services LLC
5.0(
4
)
Portable Generator - Repair

Serving Thomaston, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Firemans Services LLC is a trusted, locally owned electrical contracting company dedicated to delivering safe, reliable, and high-quality electrical solutions. We specialize in residential and light commercial work, including service upgrades, panel replacements, generator installations, and custom electrical projects.\n\nWith a strong commitment to craftsmanship and customer satisfaction, our team takes pride in doing the job right the first time—on schedule and within budget. Whether you need a full service upgrade, backup power solutions, or everyday electrical repairs, Firemans Services LLC is your dependable choice for professional service you can count on.

Meter
Tesla Charger
Request Quote
Ciarlo Electric, LLC
5.0(
3
)
Fixed Generator - Install

Serving Thomaston, CT and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"They are amazing, and they do really good work. Very efficient. Explained everything. My house had many electrical issues, so they identified additional hazards and developed the necessary solutions. I have had no problems with any of the work that was completed. In the past, I have also recommended Ciarlo Electric to others."
Response time3 hrs
Response rate100%
Recommended by100%of homeowners
Request Quote
Avatar for Handover Electric, LLC
Handover Electric, LLC
3.9(
4
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+3 more

Serving Thomaston, CT and surrounding areas

Approved

In business since 2000

Credit card accepted

Offers commercial services

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Response time5 hrs
Request Quote
...
Showing 1-10 of 79
Generator Install questions, answered by experts

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.

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

A 1,500 square foot home will likely need a 15kW to 20kW generator. When deciding on whole-house generator size, add up the total wattage of the devices that you’d like to continue running during a power outage. That way, you can ensure you purchase a generator that can power your necessary appliances or medical equipment during an electrical emergency.

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.

The Thomaston, CT 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