Top-rated generator install pros.

Get matched with top generator install pros in Deering, NH

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Deering, NH?

Select your specific project to find the pro for you.

Find Generator install pros in Deering

Avatar for Electrical & Security Solutions, LLC
Electrical & Security Solutions, LLC
5.0(
13
)
Fixed Generator - InstallFixed Generator - Repair

Serving Deering, 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%
5 neighbors recently requested a quote
Avatar for Let It Glow Electric, LLC
Let It Glow Electric, LLC
4.6(
32
)
Portable Generator - Install

Serving Deering, 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
3 neighbors recently requested a quote
Recommended by76%of homeowners
American Electric
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Deering, 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 time5 hrs
Recommended by80%of homeowners
Avatar for Willett Electric, LLC
Willett Electric, LLC
5.0(
2
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Install+1 more

Serving Deering, NH and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

Willett Electric LLC is committed to excellence in every aspect of our business. We uphold a \nstandard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is \nthe quality of service we bring to our customers. We have accurate knowledge of our trade \ncombined with ability is what makes us true professionals. Above all, we are watchful of our \ncustomers' interests, and make their concerns the basis of our business.

Kitchen remodel
Bathroom Reno’s
Bathroom Reno’s
Bathroom Reno’s
Bathroom Reno’s

+14

Richard Hebert Master Electrician
5.0(
1
)
Fixed Generator - InstallPortable Generator - Install

Serving Deering, 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
...
Showing 1-10 of 57
Generator Install questions, answered by experts

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

While the rating will tell you how many watts the refrigerator needs at the peak of its cycle, it requires additional wattage to start. At the bare minimum, you’ll need a 1,500-watt generator to get the fridge up and running after a blackout. A 2,000-watt generator should be sufficient for most home refrigerators.

Natural gas and electricity rates vary significantly based on location, and pricing can change over time, too. It’s possible that in locations where natural gas is particularly inexpensive, it will cost less than grid-based electricity will. However, you should also factor in the generator’s initial costs and maintenance needs, as well as its noise level and if it can comfortably power all your home appliances.

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.

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.

The Deering, NH homeowners’ guide to generator installs

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