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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon10
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Verified Reviews for Generator Install pros in Contoocook, NH

*The Angi rating for Generator Install companies in Contoocook, NH 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 Contoocook, NH 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 April 06, 2025

Top-Rated Generator install pros in Contoocook - Updated Nov 2026

Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
5.0(
15
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Contoocook, NH and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Everyone should buy a generator from the Generator Supercenter of NH. Everything was seamless, from the sales visit to the installation. Their professional crews exceeded all expectations. I would highly recommend them."
Completed 22kW Generac Standby Home Generator Installation - With GenMon MobileLink installed, our 24/7 monitoring program which includes annual maintenance!
Automatic Transfer Switch Installed - shown on the left with the customers electrical panel on the right.
Additional Photos
Additional Photos
Additional Photos

+5

Response time3 days
Response rate100%
13 neighbors recently requested a quote
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Avatar for Cote Electric, LLC
Cote Electric, LLC
4.9(
46
)
Fixed Generator - InstallFixed Generator - Repair

Serving Contoocook, NH and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1987

Free estimates

Credit card accepted

"Yearly service. I highly recommend Cote Electric for generator install and service!"
Standby Generator installed in the back of family's home.
Generator Install
Generator Maintenance
Response time3 days
384 neighbors recently requested a quote
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Avatar for Bob Daniels Electric
Bob Daniels Electric
4.5(
46
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Contoocook, NH and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"Installed a thermostat and checked a light fixture for me. Response time was quick, communication and estimate were thorough, work was well done, I will definitely call him again. It was a pleasure doing business with him."
Untitled Gallery 1
Response time6 hrs
6 neighbors recently requested a quote
Recommended by97%of homeowners
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Avatar for Pellerin Electric, LLC
Pellerin Electric, LLC
4.6(
84
)
Fixed Generator - InstallPortable Generator - Install

Serving Contoocook, NH and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"Upgraded the service to the house, grounds, new/larger primary panel, sub-panel installed in garage, exterior generator wired. Very neat/clean work, very quick. Very happy."
2 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for Heritage Home Service
Heritage Home Service
4.5(
464
)
Fixed Generator - InstallFixed Generator - Repair

Serving Contoocook, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"Just checked out the planned installation of an LP gas system. Very informative and helpful."
Generator Installation
Light Fixture Service
Oultet services
Indoor Outlet Service
HVAC Outdoor Unit

+16

Response time1 day
387 neighbors recently requested a quote
Recommended by94%of homeowners
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Avatar for Preferred Electrical Services, LLC
Preferred Electrical Services, LLC
4.6(
16
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business

Serving Contoocook, NH and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"Mat was very professional and did a great job installing out transfer switch for our generator. We have already recomended him to a friend, and we also look forward to having him to come back to install a celiing fan. We highly recommend this services."
Response time7 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
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MJS Electrical Services, LLC
3.6(
38
)
Fixed Generator - InstallGenerator - Install - For Business

Serving Contoocook, NH and surrounding areas

Approved

In business since 2007

Free estimates

Credit card accepted

"MJS Installed my new Generator, Gas piping, gas stove and telescopic downdraft kitchen vent. every aspect of the system installation was on point. in meeting the building inspector, he noted that this company has always preformed they installations to code and safety highly recommend MJS all techs and office staff always kept me informed"
7 neighbors recently requested a quote
Recommended by96%of homeowners
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American Electric
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Contoocook, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business. \n

Response time5 hrs
Recommended by80%of homeowners
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Avatar for Joseph sweeny
Joseph sweeny
4.3(
11
)
Portable Generator - InstallPortable Generator - Repair

Serving Contoocook, NH and surrounding areas

Approved

Emergency services offered

Warranties offered

Small jobs welcome

"Replaced 5 shades and put up blinds. Also installed a ceiling fan where I had a light fixture. Professional and clean 10/10"
Deck staining
Deck staining
48 neighbors recently requested a quote
Recommended by11%of homeowners
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Richard Hebert Master Electrician
5.0(
1
)
Fixed Generator - InstallPortable Generator - Install

Serving Contoocook, NH and surrounding areas

Approved

In business since 2020

Credit card accepted

Offers commercial services

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 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.

2 neighbors recently requested a quote
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Generator Install FAQs, answered by experts

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.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

Here’s what you can run with different wattages and types of generators:

Portable generator:

  • 2,000 watts can handle a large appliance like a freezer or refrigerator, plus a few smaller items like phones or computer chargers. 

  • 4,000 watts will keep two large appliances operating and a few smaller devices.

  • 8,000 watts should power most essential appliances and other devices, including a sump pump, well pump, or your dishwasher.

Partial to whole-house generator:

  • 20,000 watts and above will make it seem like your home’s power is still on.

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.

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

The Contoocook, NH 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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