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Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
4.8(
35
)

Serving Sunapee, NH and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Diagnosed the problem and repaired my generator so it starts and runs well. I will be using them from now on for all of my generator service in the future. They are a first class company."
22KW Installation
18KW Installation
Preparation for the day
Photos
Response time1 day
Response rate90%
73 neighbors recently requested a quote
Avatar for Pellerin Electric, LLC
Pellerin Electric, LLC
4.6(
84
)

Serving Sunapee, NH and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"They attended my call immediately and shown up to do the job as per schedule. All services was ok. However it tooks them a week or so for sendind a correct bill and it was a little pricy Considering what was done."
4 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Let It Glow Electric, LLC
Let It Glow Electric, LLC
4.6(
32
)

Serving Sunapee, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Justin did great job, intalled the hookup and the transfer switch for the portable generator. Worked in freezing temperature outside. The only downside was that the install was postponed few times because he was waiting for the parts"
Exterior
Kitchen
Main service
Transfer switch and main panel
Canopy recessed cans retrofit

+27

Response time1 day
4 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for Vermont Generator Systems
Vermont Generator Systems
5.0(
1
)

Serving Sunapee, NH and surrounding areas

Approved

In business since 2008

Free estimates

Emergency services offered

Since 2004, Vermont Generator Systems has proudly supported the backup power needs of homes and businesses across parts of Vermont and New Hampshire. Our experienced team is with you every step of the way, from the initial site assessment to professional installation and ongoing maintenance. VGS has deep expertise in installing and servicing Generac generator systems.

Check out our Generic Generator Installations!
A collage of recent Generator Installations!
Response time6 hrs
29 neighbors recently requested a quote
American Electric
5.0(
5
)

Serving Sunapee, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"I had American Electric complete the wiring for my 24x40 garage along with a 200-amp panel upgrade to my house, and I couldn’t be happier with the results. From start to finish, the communication was excellent, they were punctual, reliable, and the quality of work was outstanding. Everything was done professionally and exactly as discussed. I would absolutely refer them again and highly recommend them to anyone needing electrical work done."
Response time4 hrs
1 neighbors recently requested a quote
Recommended by80%of homeowners
Payson Power and Communications
4.0(
4
)

Serving Sunapee, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Pete was very prompt and professional. He was able to upgrade all of our outdated outlets in one full day. Unlike past electricians who have come across a bit grumpy, Pete was super friendly and seemed happy to walk us through all our silly questions. I would highly recommend Pete if you want the job done thoroughly and with a smile!"
Response time1 day
11 neighbors recently requested a quote
Recommended by40%of homeowners
Avatar for Brens Electric LLC
Brens Electric LLC
5.0(
1
)

Serving Sunapee, NH and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

We bring years of proven experience and a strong work ethic to every project we undertake. As a fully licensed and insured electrical contractor, we combine technical expertise, attention to detail, and strict compliance with all applicable electrical codes and safety standards. Our work is performed with professionalism, precision, and accountability. Whether managing complex electrical systems or providing routine maintenance, every task is completed with a focus on quality, reliability, and long-term performance. Our goal is to build lasting relationships built on trust, consistency, and exceptional service.\n

800A Service Upgrade
800A Service Upgrade
3 neighbors recently requested a quote
Levi Electric
New to Angi

Serving Sunapee, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Levi is a Master Electrician with over 10 years of experience in the electrical trade. He has primarily worked in high-end residential and custom homes, bringing strong expertise in electrical layout, lighting design, and coordination with insulation and building systems. Levi is highly knowledgeable in all aspects of residential electrical work, from rough-in to finish, and is committed to safe, code-compliant, and high-quality installations.

Showing 1-10 of 35
Generator Install questions, answered by experts

Yes, installing a generator usually increases your property value because buyers are getting the added peace of mind knowing they’ll be able to maintain power through blackouts. In most cases, you should see close to a 100% return on investment (ROI). Keep in mind that home generators usually need a permanent foundation, and installing a concrete slab will likely raise your property taxes slightly.

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

Many services include assembling the unit and securing it in the window. Confirm with your provider.

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.

The Sunapee, NH homeowners’ guide to generator installs

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