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Verified Reviews for Generator Install pros in Bartlett, NH

*The Angi rating for Generator Install companies in Bartlett, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Bartlett, NH is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on February 09, 2026

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

Avatar for SW WOOD LLC
SW WOOD LLC
5.0(
1
)
Portable Generator - InstallPortable Generator - Repair

Serving Bartlett, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I was very pleased with the work he did, he has a nice way of explaining things , I sure I will hire him again for other projects when needed he is a very pleasant person to deal with. Tank you Scott for being such a nice guy ."
Projects
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+6

7 neighbors recently requested a quote
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Avatar for UCS Construction and Design
UCS Construction and Design
New to Angi
Portable Generator - Repair

Serving Bartlett, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

We are new company just getting started I have a team of licensed professionals I work with. We are very well rounded in our field of work. Doing everything from small handyman repair and installation work to full remodels and renovations. No matter how big or small the job is we are here to help and give great prices and discounts to help home owners and other professionals. Always leaving up to code, quality work, and satisfied customers behind. We also do custom work such as Accent/feature walls that give a home that unique and elegant feel to it.

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Avatar for Power Moves Electric, LLC
Power Moves Electric, LLC
5.0(
11
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Bartlett, NH and surrounding areas

Emergency services offered

"From the very beginning to the end the experience was exceptionally good. The price was great, professionalism top-notch and the work was extremely high-quality. We knew exactly what to expect along the way and I would recommend them to anyone."
Recommended by100%of homeowners
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Avatar for JM Electric LLC
JM Electric LLC
4.5(
26
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Bartlett, NH and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"The amount of work that needed to be done to our 1880 house was extensive. Joe listened to our needs and concerns and offered suggestions that improved our plans. His quote was very fair. He is easy to talk to, professional and honest. Caleb and Dylan who did the work were amazing to deal with. They were very knowledgable, worked hard, and were careful and patient dealing with the oddities of an old house. I highly recommend this company and will call on them for all my electrical needs."
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+15

Recommended by100%of homeowners
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Avatar for Vermont Generator Systems
Vermont Generator Systems
5.0(
1
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Bartlett, NH and surrounding areas

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
Response rate100%
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Generator Install FAQs, answered by experts

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.

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.

It might seem counterintuitive, but installing a generator transfer switch will save you money in the long run. While you’ll have to pay between $400 and $2,500 to have the transfer switch installed, you’ll recoup that amount later on when you don’t have to pay for expensive repairs to your appliances, devices, and electrical system that may have burned out, overloaded, or stopped working due to a sudden loss of power or an incorrect hook up of a generator to your home. 

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.

The cost to install a whole-house generator averages $5,200, with a typical price range of $1,500 to $8,900. However, total costs can vary from $400 for a small portable unit to over $18,000 for a large-capacity system. The most significant cost factor is the generator's size and capacity, but other variables include the brand, fuel type, and labor for assembly and installation.

Generator costs can be broken down by type:

  • Portable or Emergency Backup Generators (1kW–7.5kW): $500 to $2,000

  • Partial-Home Generators (9kW–20kW): $2,000 to $6,500

  • Whole-House Generators (22kW–48kW): $5,000 to $18,000

To avoid paying for more power than you need, consider hiring an electrician to calculate the electrical load for your essential appliances. It is also recommended to get at least three quotes to find the best deal for your specific needs and budget.

The Bartlett, NH homeowners’ guide to generator installs

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

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