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Find Generator install pros in Epsom

Avatar for Generator Supercenter of New Hampshire
Generator Supercenter of New Hampshire
5.0(
15
)

Serving Epsom, NH and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"The installation went flawless. There were 5 installers and everyone one was a professional and had it done in super time. Would recommend them to anyone looking for a generator."
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

4 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Pellerin Electric, LLC
Pellerin Electric, LLC
4.6(
84
)

Serving Epsom, 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."
5 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for ARETE ELECTRIC
ARETE ELECTRIC
5.0(
20
)

Serving Epsom, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Credit card accepted

"They were very professional, cleaned up the area as they finished. They installed a They installed a combo mini split system with three inside heads . They arrived on time and completed the job in one day . They were very efficient and the installation was perfect"
Response time3 hrs
3 neighbors recently requested a quote
Recommended by5%of homeowners
Avatar for Loyal Lab Electric & Generators
Loyal Lab Electric & Generators
5.0(
5
)

Serving Epsom, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Loyal Lab Electric & Generators is a locally owned electrical contractor serving Dover, Portsmouth, Rochester, and the NH Seacoast from our base in Somersworth, NH. Owner and NH Master Electrician Eric Hope has been in the trade since 2008 and founded this company in 2018. \n\nWe are an authorized Generac dealer with certified service technician's on staff, specializing in whole-home generator installation, electrical panel upgrades, EV charger installation, and electrical repairs. We serve residential customers across the NH Seacoast and southern Maine. NH Master Electrician License 13956. \n\nEvery job we complete donates to The Rusty Fund, supporting local dog rescues through our partnership with Pope Memorial Humane Society in Dover.

Past Projects
Past Projects
Past Projects
Past Projects
Past Projects

+13

26 neighbors recently requested a quote
Avatar for Allpoints Electrical
Allpoints Electrical
5.0(
9
)

Serving Epsom, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"I have a very good impression of Mr. Morton and appreciate his efficiency and speed in getting my generator back in service. I have asked him to put me on his list for a yearly evaluation. I am trusting that the next time there is a power failure my generator will be back in operation."
Response time4 hrs
Recommended by100%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.5(
460
)

Serving Epsom, NH and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"On time, quick, reasonable, quality job installing toilet. Charged less than quote. Didn't try to upsell. Very good experience. Thank you!"
Generator Installation
Light Fixture Service
Oultet services
Indoor Outlet Service
HVAC Outdoor Unit

+16

Response time1 day
299 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Electrical & Security Solutions, LLC
Electrical & Security Solutions, LLC
5.0(
10
)

Serving Epsom, NH and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Electrical & Security Solutions are the best! I have needed their services more than once to replace lights, a ceiling fan and also to install a new electrical box and breaker for our garbage disposal. Tyler promptly responded every time I called and he and Casey are both friendly, efficient and skillful. Aside from the excellent service, the qualities I appreciate the most is honesty for what work needs to be done and how Tyler is also very budget consciousness."
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting

+10

11 neighbors recently requested a quote
Recommended by100%of homeowners
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Showing 1-10 of 95
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.

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.

DIY is possible for basic setups. Professional installation ensures safe and proper electrical connections.

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.

In most municipalities, you will need a permit to install a permanent home generator, including emergency backup, partial-home, and whole-home generators. A permit for a generator usually costs between $50 and $250, depending on where you live. Your electrician or certified generator installer will usually pull the permit for you—and might be required to do so by your building department—but you’ll be on the hook for the cost of the permit. You should ask your installer before agreeing to any work if they will pull the necessary permits for your project.

The Epsom, NH homeowners’ guide to generator installs

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