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TRUSTED BY LEXINGTON, MA HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon12
    Verified generator installs reviews

Find Generator install pros in Lexington

Harland Electric Inc
4.9(
137
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Lexington, MA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Bill walked me through checking the outlet and circuits. We solved the problem with no service call needed. Harland has been my electrician since the early 2000's. They have completed many projects/repairs small and large (full panel replacement after water damage to installing a exterior spotlight). Staff answering calls is pleasant and professional, Bill gets back to customers usually the same day."
Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Mike Medzhidov
4.8(
160
)
Portable Generator - Install

Serving Lexington, 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%
Recommended by96%of homeowners
Avatar for Jose Baez
Jose Baez
5.0(
26
)
Fixed Generator - Install

Serving Lexington, 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%
1 neighbors recently requested a quote
Avatar for Amaury Castillo Electric
Amaury Castillo Electric
4.9(
186
)
Portable Generator - Install

Serving Lexington, MA and surrounding areas

Approved

In business since 2014

Free estimates

Emergency services offered

"Amaury was very professional and did a good job. We delayed the work until we could take delivery of our generator so that he could test everything together and go over the transition with my wife and I. He was neat, accommodating, patient and thorough in describing how things worked. I would recommend him."
Generator
Generator
Generator
Hallway
Hallway before the recessed lights

+6

Response time10 hrs
2 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Michael J Roberts
Michael J Roberts
5.0(
12
)
Fixed Generator - InstallPortable Generator - Install

Serving Lexington, 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
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Showing 1-10 of 187
Generator Install questions, answered by experts

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.

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.

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.

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.

No, you should never plug a generator directly into a wall outlet in your house. This practice is extremely dangerous, often illegal, and can cause "back-feeding," where power from the generator flows back into utility lines, creating a life-threatening hazard for utility workers. It can also damage your home's electrical system, including appliances like pumps and HVAC fans. If the main power is restored while the generator is connected, it can destroy the generator and cause an electrical fire. To safely connect a generator, you must use a professionally installed transfer switch or an interlocking kit, which prevents back-feeding by disconnecting your home from the utility grid before the generator provides power.

The Lexington, MA homeowners’ guide to generator installs

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