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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
)

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
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Avatar for OnTheGrid Electric , LLC
OnTheGrid Electric , LLC
5.0(
12
)

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
4 neighbors recently requested a quote
Recommended by100%of homeowners
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Avatar for Swanson Electric, LLC
Swanson Electric, LLC
5.0(
32
)

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
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Avatar for Anchor Electric Motor, LLC
Anchor Electric Motor, LLC
4.7(
46
)

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
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Avatar for MB Electric
MB Electric
4.9(
8
)

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
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Avatar for Firemans Services LLC
Firemans Services LLC
5.0(
4
)

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
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Avatar for HARP Home Services, LLC
HARP Home Services, LLC
3.6(
102
)

Serving Thomaston, CT and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

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! Feel free to book online with us today!

Recommended by74%of homeowners
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Generator Install questions, answered by experts

To power a central air system during a power outage, the whole-house generator will need to be at least 5,000 watts, and this number will significantly increase for larger units. Check the specific wattage requirements of your AC unit to choose the right generator size. Consider consulting a generator installer to ensure your whole-house generator meets your electrical load needs.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

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.

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.

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