Top-rated generator install pros.

Get matched with top generator install pros in Waltham, MA

Enter your zip and get matched with up to 5 pros

Need a pro for your generator install project in Waltham, MA?

Select your specific project to find the pro for you.

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(
58
)
Fixed Generator - InstallPortable Generator - Install

Serving Waltham, 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 rate100%
50 neighbors recently requested a quote
Avatar for VMA Electric Inc
VMA Electric Inc
4.8(
465
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair+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%
20 neighbors recently requested a quote
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
54
)
Fixed Generator - InstallFixed Generator - RepairPortable Generator - Repair+2 more

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]

My jobs
My jobs
My jobs
My jobs
My jobs

+17

266 neighbors recently requested a quote
Mike Medzhidov
4.8(
160
)
Portable Generator - Install

Serving Waltham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Small jobs welcome

"Great job I had lots of small repairs. Mike and his assistant were professional and reasonably priced my projects. Installed replacement fixtures, repaired outlets, and installed Blink doorbells. Great job and cleaned up too! Heâ s is busy so plan ahead!"
Lights
Remodel
Wall washing
Low voltage,  remote transformer,  island lighting
LED undercabinet lighting

+8

Response time7 hrs
Response rate95%
2 neighbors recently requested a quote
Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
166
)
Fixed Generator - InstallPortable Generator - InstallGenerator - Install+2 more

Serving Waltham, MA and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 1948

Free estimates

Emergency services offered

"Jason and his team with Cotti-Johnson did an excellent job updating our electrical boxes, installing the washer/dryer hookup, and getting us setup with a generator! Sam, our assigned electrician, even took the time to go through the entire operation of the generator from A-Z. I would definitely recommend them for any electrical work!"
Navien Install
Backflow
Outdoor Shower
Well Tank Replacement
Filtration Installation

+62

Response time10 hrs
69 neighbors recently requested a quote
Recommended by89%of homeowners
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

"Jose was great to work with. He was quick to respond, came by on short notice to have a look and provide a quote for the work (Installation of one new smart thermostat and replace one old thermostat with new thermostat; requiring separation of baseboards due to wattage). Very competitive pricing, showed up on time at each appointment and got the work done quickly. He left the place cleaner than before, and walked me through everything after the installation. Can highly recommend Jose for any electrical work!"
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

"The furnaces were replaced in two different houses without any problems. The generator was placed in one of the houses with many delays. Waiting for parts we were told. When it was finally assembled it worked but daily test runs were happening. When we called to have our yearly check we were told it should only run once a week. A part needed to be replaced. Wilson Bros. shared that expense. It ran for about the next 5 years with constant maintenance but this year the mother board is gone. Wilson Bros have been wonderful but I question the quality of their equipment. One of the gas furnaces also requires costly maintenance. We never had this with our other gas furnaces. Love Wilson Bros. Don't like their replacement equipment. I just thought new things should last a little."
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.
6 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Michael J Roberts
Michael J Roberts
5.0(
11
)
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

"I have called Michael into a few projects. He offers an array of services from wiring a full house to simple fixtures. He recently separated a four family offering all new meters and main panels. When it comes to electrical I don’t think there is anything he can’t do. Without hesitation, I recommend him to all."
House remodel
House remodel
House remodel
Hot tub
House remodel

+5

Response time8 hrs
Response rate94%
20 neighbors recently requested a quote
Avatar for Landry Mechanical, Inc.- Electrical
Landry Mechanical, Inc.- Electrical
4.5(
107
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install - For Business+2 more

Serving Waltham, MA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

"Went out of their way to insure faucet installation after initial install proved defective. Associate went extra mile and drove approximately 25 miles away to get another faucet and made successful installation."
Ductless Install
Various photos
Various photos
Various photos
Various photos

+52

Response time2 days
98 neighbors recently requested a quote
Recommended by84%of homeowners
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%
12 neighbors recently requested a quote
...
Showing 1-10 of 161
Generator Install questions, answered by experts

With proper maintenance, a whole-house generator can last between 20 and 40 years. The specific lifespan depends on how often and for how long the generator is used, and some models may have their life expectancy rated in hours of operation. To maximize its lifespan, expect to spend around $150 to $300 per year for annual maintenance checks from a qualified technician. During these checks, a technician will inspect the engine filter, starting mechanism, fuel, lubrication, and coolant levels. Consulting your installer and choosing a low-impact fuel like natural gas or diesel can also help ensure your generator lasts as long as possible.

While diesel is relatively stable, it won’t last nearly as long as propane and you may have to replace it if it sits unused for too long. Diesel can sometimes struggle to work efficiently or start engines during especially cold weather, so it’s not the best choice for every climate. Compared to fuels like propane and natural gas, diesel generators tend to be noisier and create more exhaust, which isn’t always ideal for home use.

Setting up utilities on a vacant property usually takes at least a few months, or between 6 weeks to 16 weeks. This process requires working with the local planning and zoning department, hiring a building contractor or engineer to design the utility layout, securing permits, laying the lines, and connecting the utilities.

Sizing a generator is a careful process that requires calculating the electrical load of your entire house. You have to take into account every device you want to use and their wattage requirements, plus the wattage needed to start them, and look for a generator that can safely run all that at around 80% capacity.

In more practical terms, a small home can run on a 10,000-watt generator (and if you only want to power a few key appliances, much less than that). A mid-sized home may need something between 15,000 and 22,000 watts. Larger homes require 25,000 watts or more. 

Whole-house generators need to be installed on level ground several feet away from walls and other objects. Because they tap into the electrical system directly, they usually need to be close to your home electrical panel for a transfer switch installation. It also helps with installation if they are near to a gas line or propane tank installation.

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.