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Verified Reviews for Generator Install pros in Somerville, MA

*The Angi rating for Generator Install companies in Somerville, MA 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 Somerville, MA 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 November 20, 2025

Find Generator install pros in Somerville

Dever Electric
5.0(
58
)

Serving Somerville, MA and surrounding areas

Approved

In business since 2008

Free estimates

Offers commercial services

"Matt was very creative and thoughtful about the best way to install an electrical vehicle charger when he needed to work through some obstacles in an older house. I anticipate using him for other projects around our house and am happy to recommend him for the installation of Level 2 home charging."
Response time1 day
Response rate96%
44 neighbors recently requested a quote
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Avatar for Nicholas Spirito Electrical Services
Nicholas Spirito Electrical Services
5.0(
62
)

Serving Somerville, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"First II had an EV charger installed. Nicholas was the first to be completely transparent about what it would take to do the installation properly, and on top prepare our stove outlet to induction â both major consumers of electrical power. As a followup, since our electrical panel was a complete mess, I had him install a new panel neat and properly with modern breakers. I would definitely hire him for any other electrical jobs I may have in the future. Highly recommended."
New 40 circuit panel with afci breakers
New Panel
New Panel
New Meter socket with main breaker 200A
Removal of Old Panel and build of New Panel Board

+5

Response time4 hrs
Response rate98%
4 neighbors recently requested a quote
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Avatar for NETR Inc
NETR Inc
4.7(
78
)

Serving Somerville, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"I bought my unit from NETR in 2018. It worked fine until we discovered it wasn't blowing any cold air. I made the big mistake of hiring someone a family friend recommended and they diagnosed it incorrectly and then basically disappeared on me. Anyway, it took a few weeks but they repaired it today and I was impressed with their courtesy and getting the job done very quickly and successfully. I felt like I was being dealt with honestly. Thanks, Jared and Jack. I should mention I paid about $300 for the refrigerant today. I don't know what the final cost will be but probably a bit over $1000."
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
Additional Photos
Additional Photos

+9

31 neighbors recently requested a quote
Recommended by91%of homeowners
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Avatar for Michael J Roberts
Michael J Roberts
5.0(
11
)

Serving Somerville, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"I Hired Michael to put in new light fixtures in the kitchen and bathroom.He did an excellent job and was very honest and professional."
House remodel
House remodel
House remodel
Hot tub
House remodel

+5

Response time8 hrs
Response rate90%
14 neighbors recently requested a quote
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Ray Daly Electric, Inc.
4.2(
72
)

Serving Somerville, MA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"I am a landlord and was in desperate need to have a few outlets within a rental unit serviced as they were RED flagged by city of Boston ISD for non-grounding. I called a few local electricians and none could fit me into their schedule. I remembered the Homeadvisor adds and went online searched for the services I needed and filled out form. And within 15 minutes Ray from Daly Electric, Inc. gave me a call, he identified himself and asked me what services I needed. I explained the situation and Ray gave a call back with a quote and an appointment for Monday morning within 20 minutes. Keep in mind that we first made contact on Friday morning. Ray was really convenient as I could not be on site. I left the keys to the unit and he called me when he got to the property. Ray, called me once again on inspection to confirm the work as well as alert me about polarity issues with other outlets in the unit. Ray gave me a competitive price and service I am happy with. My perception of Ray and Daly Electric, Inc. from this one instance is that they are clear in their communication and follow through which made feel I was making the right choice in hiring his services. I would say I recommend Ray from Daly Electric, Inc. and would consult and use their services again."
Response time2 days
Response rate88%
14 neighbors recently requested a quote
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Avatar for Services & More LLC
Services & More LLC
4.9(
25
)

Serving Somerville, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"They were very fast & efficient in taking care of my lawn, which they did a great job! They immediately responded to my inquiry & came out the next day. Satisfied with the service."
Furniture Assembly
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel
Bathroom Remodel

+4

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

Yes, in some locations, it is required by the National Electric Code (NEC) to have a transfer switch installed for electrical emergencies. In addition to following electrical code, generator transfer switches ensure your home is fully protected during a power outage. By switching the power from the main breaker to the generator breaker, you can seamlessly operate your HVAC, lights, appliances, devices, and more during an emergency. 

Whole-house generators can run continuously for extended periods, even for weeks at a time (around 400 to 500 hours), as long as they have a sufficient fuel supply. However, this type of extensive use will increase wear and tear and can shorten the generator's overall lifespan. During long periods of operation, it's important to check and refill the engine oil as needed, potentially as frequently as daily depending on the model. If your generator uses a fuel tank, ensure it is kept full to prevent unexpected shutdowns.

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.

A portable generator can supply power to selected appliances and circuits in a home, but it's generally not designed to handle the entire household's electrical needs simultaneously. Portable generators have limited wattage capacity, so they are only designed to power essential devices and electronics temporarily until local power is restored. If your power needs outweigh the capabilities of a portable generator, consider installing a whole-home generator instead.

To reduce AC startup power for a whole-house generator, install a soft start kit or hard start capacitor, which lowers the initial surge by gradually ramping up the compressor. Using a smart load manager can also help by staggering startup loads, preventing a system overload and future costly repairs.

The Somerville, MA 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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