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TRUSTED BY WILTON, NH HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon13
    Verified generator installs reviews

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

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

Serving Wilton, NH and surrounding areas

Approved

In business since 2006

Free estimates

Warranties offered

"Very accommodating and helpful with suggestions when it was noticed that the fan we purchased was defective..our installer came back in the afternoon to install the replacement fan. Check your purchases at Home Depot before you leave the store...our Hunter Fan was definitely returned by a previous customer and then put back on the shelf. The Company and installer handled the job very efficiently and professionally and we would highly recommend."
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Wilson Brothers Heating & Air Conditioning Inc
Wilson Brothers Heating & Air Conditioning Inc
4.5(
160
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+2 more

Serving Wilton, NH and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Wilson brothers came out to look at the project and provide a bid. They scheduled the inspection with little delay and arrived on time. The man who came was friendly but was very critical of the duct work in my home, which had been installed in a major renovation two years prior by a different company. I'll describe that impact below. He went away promising to provide a bid in two days' time. A week later, I still hadn't heard word and contacted the company. They replied that they would not be able to provide a cost estimate as they were too busy to do the work for several months' time. They indicated that my project was more involved than most A/C installations and for that reason they were choosing not to bid during their high volume time. I was appreciative that they didn't string me along, though frustrated to have to wait a week and then get this answer. The conversation about my previous duct-work project was also worrisome. He described it as an unprofessional job and claimed that it was not up to the building code. The new ducts were flexible, insulated ducts which he stated the code did not permit beyond a run of 12 feet. (Many were much longer than this.) He also pointed out half a dozen places where he believed the ducts had been kinked due to a tight bend. This information obviously led to quite a bit of concern on my part, as well as surprise due to the good heating performance after the previous renovation. I both called the previous contractor and researched the building code on my own. I learned that the Wilson Bros. estimator was incorrect about the building code: flexible *connectors* are limited to 12 feet in length; flexible *ducts* such as what I had are not length-limited. Additionally, all but one of the ducts he had claimed were kinked were not -- the insulation was pinched, but the duct itself was not deformed. The previous contractor noted one kinked duct that they replaced. My suspicion is that the technician does not work with flexible ducts and this led to the competing information. I appreciated the information and it did lead to the repair of one kinked duct. I also appreciated the honesty regarding their ability to do the work in a timely manner, though I would have liked better communication on the topic rather than my having to chase them down."
Three of the five heads are marked by the numbers in the blue circle. On the inside of the house is where you will find the mounted units. The slim ducts run alongside the white arrows and will eventually be covered to match the exterior of the house.
The slim ducts in the basement ceiling that connect from the branch box all the way to the 5 different heating and cooling units. These will be covered by the ceiling tiles once the job is finished.
5 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Let It Glow Electric, LLC
Let It Glow Electric, LLC
4.6(
32
)
Portable Generator - Install

Serving Wilton, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"The owner was friendly,knowledgeable, listen to your issues, help decide the right choice action. Then exe used the action which included a new breaker box and generator hook-up. Very neat job, do e right and fast."
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 The Speedy Sparky LLC
The Speedy Sparky LLC
5.0(
8
)
Fixed Generator - Install

Serving Wilton, NH and surrounding areas

Approved

In business since 2023

Free estimates

Warranties offered

"Aubrey is great. We set an appointment which he was prompt for. He estimated the time which he was also right on the money, and the work was done neat, clean, and everything tested perfectly. This is the second time I have had him do some work for me and will call him for anything else electrical that I have."
Camper outlet & breakers
Camper outlet & breakers
Response time11 hrs
Response rate90%
American Electric
5.0(
5
)
Fixed Generator - InstallFixed Generator - Repair

Serving Wilton, 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
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Generator Install FAQs, answered by experts

These advanced generators use a key fob or a smartphone app to remotely start, which is ideal for getting power back on immediately without venturing outside. This feature is more common on whole home generators, but you may be able to find it on large portable generators, too.

In many cases, yes. There are models called dual-fuel generators and fuel switches, but only between certain types of fuel. For example, with the right setup you can convert a generator from natural gas to propane. Some allow switching between diesel and gasoline. There are even tri-fuel generators available in some cases, which adds a large layer of security if you are worried about fuel availability in times of crisis. Always check your generator capabilities and manual instructions before trying to switch fuels. Some generators can use another fuel but may need a fuel conversion kit to prep them first.

Homeowners can often access federal tax credits, such as the Investment Tax Credit (ITC), which covers a percentage of installation costs. Many states and utilities offer additional rebates, grants, or performance-based incentives. These programs can significantly lower your upfront investment. Check the Database of State Incentives for Renewables and Efficiency (DSIRE) or contact your local energy office for current offers.

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

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 Wilton, NH homeowners’ guide to generator installs

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