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TRUSTED BY WALTHAM, MA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon24
    Verified generator installs reviews

Find Generator install pros in Waltham

Dever Electric
5.0(
59
)
Fixed Generator - InstallPortable Generator - Install

Serving Waltham, MA and surrounding areas

Approved

In business since 2008

Free estimates

Offers commercial services

"Just an outstanding experience end-to-end with Matt. He responded to the outreach within minutes and was able to give me a quote a few hours later that was very fair. We installed an induction stovetop and needed a new 50amp circuit and line run in our old house, crawl space and all. He showed up right on time, and made quick work of it. Very professional and friendly. He even stayed a little longer after the job was complete to help me diagnose another problem. Couldn't recommend him more highly. Would hire him again in a minute."
Response time1 day
Response rate100%
26 neighbors recently requested a quote
Avatar for VMA Electric Inc
VMA Electric Inc
4.8(
467
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"From the office folks to the electrician who did the work -- friendly and professional. They quoted the lowest price of three estimates and did the work within a couple of weeks. I purchased my generator elsewhere online... and VMA walked me thru the process of hooking it up, running it, and shutting it down. Very helpful."
Needham Project
22kw Generac
27kw
Response time8 hrs
Response rate100%
16 neighbors recently requested a quote
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
56
)
Fixed Generator - InstallGenerator - Install - For BusinessPortable Generator - Install

Serving Waltham, MA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

At Champion Electrical Services, we believe homeowners deserve better. No more no-shows, rushed work, or upsells you don't need. We built this company to do things right - with respect, craftsmanship, and pride. Every project is treated like it's being done in our own home: clean, code-compliant, and built to last. Whether you need a panel upgrade, EV charger, generator, or quick repair, we show up when it counts and earn your trust every time. \nLicensed, insured, and proudly serving MA & RI. \nWhen the lights go out, don't call just anyone. Call the Champ.\n\n(774) 331-3500 \nCalltheChamp.com \[email protected]

Hotel 4Homeless Dogs
Pan Mass Challenge
Attleboro Cheer Team
The Autism Corner
Generac Generator

+1

25 neighbors recently requested a quote
Avatar for Jose Baez
Jose Baez
5.0(
25
)
Fixed Generator - Install

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Warranties offered

"I had called Jose about installing some ceiling lights and new switches… he was able to come out the next day and worked with my wife’s and I schedule and got the job done in a timely and professional manner. Couldn’t even tell he did work on the house very clean and neat.. once again thanks you"
kitchen lights
pool house lights
pool house
service upgrade
Response time7 hrs
Response rate99%
2 neighbors recently requested a quote
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 Waltham, MA 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.
4 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Michael J Roberts
Michael J Roberts
5.0(
12
)
Fixed Generator - InstallPortable Generator - Install

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Michael came to my house and upgraded my 100 amp panel to a 200 amp panel for my solar installation project I had coming up. He was very thorough in explaining all the work that needed to be done, how long I would be without power, and was very knowledgeable in all of the questions I had. After removing my service and replacing it with the new 200 amp, he went through the entire house and checked what each breaker was wired to and marked it inside my panel very neat and organized. Couldn’t be happier with the experience from start to finish. If you need any work done to your home I highly recommend Mike and I will definitely be contacting him in the future if I ever need any other work done. Thanks Mike!!!"
House remodel
House remodel
House remodel
Hot tub
House remodel

+5

Response time8 hrs
Response rate94%
25 neighbors recently requested a quote
Ray Daly Electric, Inc.
4.2(
72
)
Generator - Install - For Business

Serving Waltham, MA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"From the initial contact via Angi to the finished installation, this was a very pleasant experience. Ray came by on the same day to check out the specific location and circumstances, and sent the very reasonable estimate the next day. We arranged for installation the following week, and the members of his team did an excellent job. We now have an EV charger that works very well. Highly recommended!"
Response time1 day
Response rate91%
14 neighbors recently requested a quote
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Generator Install questions, answered by experts

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.

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.

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.

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. 

Generators are safe to use as long as they are installed and operated correctly according to the manufacturer's recommendations. The most critical safety tips are to never use a portable or fuel-powered generator inside an enclosed space due to the risk of lethal carbon monoxide poisoning; always operate it outdoors where fumes can dissipate away from your home. Additionally, never attempt to connect a generator to your home’s electrical panel yourself—hire a professional to ensure the setup meets safety standards. Finally, avoid overloading the generator by not connecting more appliances than it is rated for, as this can damage your equipment or cause a fire.

The Waltham, MA homeowners’ guide to generator installs

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