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TRUSTED BY SUNCOOK, NH HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon12
    Verified generator installs reviews

Find Generator install pros in Suncook

Avatar for Pellerin Electric, LLC
Pellerin Electric, LLC
4.6(
84
)
Fixed Generator - InstallPortable Generator - Install

Serving Suncook, 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."
3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Electrical & Security Solutions, LLC
Electrical & Security Solutions, LLC
5.0(
13
)
Fixed Generator - InstallFixed Generator - Repair

Serving Suncook, NH and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"Tyler and his crew were amazing! Professional, on time, great communication, and the work is top notch! From first visit to get an estimate to cleaning up the job site, perfect! Thank you and highly recommend to anyone that is looking for electrical work!"
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting
Landscape lighting

+10

Response time7 hrs
Response rate100%
14 neighbors recently requested a quote
Avatar for Hewson Electric LLC
Hewson Electric LLC
5.0(
9
)
Portable Generator - Install

Serving Suncook, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I had a great experience with Hewson Electric! They were professional, friendly, knowledgeable, and made sure everything was done correctly. They were responsive, showed up when they said they would, and took the time to explain everything. I really appreciated the quality of their work and how easy they made the whole process. I would definitely recommend Hewson Electric to anyone looking for reliable electrical work!"
Stair tread lighting
Stair tread lighting
Stair tread lighting
Stair tread lighting
1 neighbors recently requested a quote
Avatar for The Speedy Sparky LLC
The Speedy Sparky LLC
5.0(
8
)
Fixed Generator - Install

Serving Suncook, NH and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

With over 10 years of experience, we pride our company on our quality of work. We are owner operated, and believe in building long-term relationships with our clients by delivering tasks that are accomplished in a neat and workman like manner. Give us a call today. We look forward to working with you!

Camper outlet & breakers
Camper outlet & breakers
Response time11 hrs
Response rate90%
1 neighbors recently requested a quote
Avatar for IDEAL ELECTRICAL SERVICES LLC
IDEAL ELECTRICAL SERVICES LLC
5.0(
11
)
Portable Generator - Install

Serving Suncook, NH and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"The work was done unbelievably I have a old trailer/camp The fuse box was terrible the breaker box for the hot water heater was from I don't know 50 years ago and he came in and fixed everything wonderfully I would recommend him to anybody he was fantastic"
Service upgrade
Ev charger
Adu new construction
Adu new construction
Lighting upgrades

+8

Avatar for ECCO Electric, LLC
ECCO Electric, LLC
5.0(
7
)
Portable Generator - Install

Serving Suncook, NH and surrounding areas

Approved

In business since 2019

Free estimates

Customers say: Quick response

"Dustin, the owner of ECCO Electric, LLC was very friendly and knowledgeable. I hired him to upgrade my 200A service and install a generator interlock/plug. Very detail oriented and shows pride in his work. He ensured the work area was cleaned up after the job was done. He was reasonably priced given how extensive the upgrade ended up being. I d recommend ECCO Electric, LLC for future work."
Response time8 hrs
Recommended by100%of homeowners
Avatar for Beacon Electric
Beacon Electric
5.0(
6
)
Fixed Generator - InstallPortable Generator - Install

Serving Suncook, NH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"I don’t usually share reviews, but Beacon Electric did such a fantastic job from start to finish that I had to share my experience!! They are friendly, extremely knowledgeable in their craft and made me feel so reassured thought the whole installation process. What a fabulous company with truly great people. I highly recommend!!"
Beacon Electric
Beacon Electric
Beacon Electric
Beacon Electric
Beacon Electric

+23

10 neighbors recently requested a quote
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Generator Install questions, answered by experts

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. 

Costs range from $500 to $2,500, depending on generator type and installation complexity.

A home that is 2,500 square feet will likely need a 20kW to 25kW generator. Consult your local generator installer to confirm the generator size needed to power your home before purchasing a new one. Be sure to consider how much power your necessary devices need to run.

To determine the right size generator for your house, you should calculate the total wattage of the appliances and devices you want to power during an outage. List all essential items, note their start-up wattages, and add them together.

Here are some typical wattage requirements for common appliances:

  • Refrigerator: 600 watts

  • Large dehumidifier: 700 watts

  • Large window air conditioner: 1,400 watts

  • Water heater: 3,000 to 4,500 watts

  • Electric furnace: 5,000 to 25,000 watts

A 7,500-watt generator might be sufficient for essentials like a refrigerator, freezer, well pump, and lighting circuits. However, for high-demand items like a water heater or furnace, a whole-home generator is a better choice. A portable generator may be enough if you only need to power a few critical items.

While home square footage can offer a rough estimate, it is not always a reliable indicator. For reference, here are some typical generator sizes based on square footage:

  • 1,000 sq ft: 6–9 kW

  • 1,500 sq ft: 7–10 kW

  • 2,000 sq ft: 10–14 kW

  • 2,500 sq ft: 12–16 kW

  • 3,000 sq ft: 16–20 kW+

For the most accurate sizing, consult a professional who can calculate your home's peak and average power consumption and recommend the optimal generator.

Most homeowners won't be able to claim a home generator as a tax write-off. However, a whole-house generator may be tax-deductible in certain situations depending on its purpose. For instance, if it's needed to power essential medical equipment, it may qualify as a medical expense deduction. Also, in some cases, businesses can deduct a generator as a business expense if it supports operations. Always consult a tax professional to determine eligibility based on your specific circumstances and the applicable IRS regulations.

The Suncook, NH homeowners’ guide to generator installs

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