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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

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

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

"We had a list of items that needed to be completed (driveways lamps posts/lighting, cathedral ceiling fan, various fixtures, etc.) and a couple of more involved projects we were thinking of doing, like a hot tub installation. Harland Electric was responsive, prompt, courteous and professional throughout the entire process—from initial contact, estimate and work. They itemized each of the projects so that we could pick and choose the work that needed to be done, and were helpful in detailing the complexities of certain projects and weighing the pros and cons of having electrical work done. During the course of coming to the house and knocking every item off of our list (which took 1.2 days worth of work/time), they also alerted us to an electrical fire hazard for an outdoor flood light that another electrician from another previous company just left and said was okay. They replaced the entire light and wiring and now it looks great the way it illuminates our side yard! We even overpaid at the end of the project and they immediately let us know! They are scheduled to return in the spring to install a pool heater and we have no doubt they will do a great job. Overall, great service, highly ethical company and good value overall. Highly recommend!"
Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Dever Electric
5.0(
59
)
Fixed Generator - InstallPortable Generator - Install

Serving Lexington, 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%
12 neighbors recently requested a quote
Avatar for VMA Electric Inc
VMA Electric Inc
4.8(
468
)
Fixed Generator - InstallFixed Generator - RepairGenerator - Install+4 more

Serving Lexington, 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%
15 neighbors recently requested a quote
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

"Jose responded promptly to my inquiry to install smoke/CO. Detectors in my home. Scheduled estimate and was able to complete install the same day even earlier than planned. He provided reasonably priced and quality service. I hope to use his services again and would recommend to friends."
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

"Great work! Troubleshoot and fix a wiring issue with my generator transfer switch. Courteous and explained exactly what he was doing. Thoroughly checked his work. Will have him back for any future jobs."
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 Geno Farina Master Electrician
Geno Farina Master Electrician
4.4(
232
)
Fixed Generator - InstallPortable Generator - Install

Serving Lexington, MA and surrounding areas

Approved

In business since 1984

Free estimates

Emergency services offered

"He telephoned me promptly and made arrangements to come out the next evening. He had my fixture installed quickly and taught me about the new CFL bulbs. I was very happy with the service he performed."
1 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for O’LYNNE ELECTRIC LLC
O’LYNNE ELECTRIC LLC
4.5(
54
)
Fixed Generator - Install

Serving Lexington, MA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

OLYNNE ELECTRIC is a family-owned electrical and electrification contractor based in Methuen, serving Massachusetts and New Hampshire. Led by a master electrician licensed in both states, we help homeowners and businesses with electrical repairs, panel and service upgrades, EV chargers, standby generators, ducted and ductless heat pumps, solar panels and battery storage. We also handle lighting, additions, remodels and new construction. Whether you need a repair or are planning a larger upgrade, we focus on clear communication, thoughtful solutions and quality workmanship. Regular hours are Monday-Friday, 7 a.m.-5 p.m.; weekends are for emergency service. Contact us to discuss your project.

Additional Photos
Additional Photos
14 neighbors recently requested a quote
Recommended by82%of homeowners
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Generator Install FAQs, answered by experts

It’s usually better to repair your generator if it isn’t working properly, as it will typically be much more affordable and should yield similar results. Generator repairs cost around $300 on average, while installing a new whole-house generator costs around $5,000 on average. The only exception is if you know your generator is reaching the end of its useful life, usually between 30 and 40 years. If you have an older generator, you could face multiple repairs in the coming years, which might mean that a full replacement will be more cost-effective over time.

The amount of time a standby generator can run continuously is around 3,000 hours on average. However, standby generators can generally run indefinitely as long as they have a continuous fuel supply. Generators hooked up to a home’s natural gas supply are the best option for extended usage, as these won’t rely on a finite fuel supply based on how much you have in storage. Generators running on liquid propane or diesel won’t last as long, as these require fuel storage and regular refueling to stay running.

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.

You can expect a diesel generator to last for up to 30,000 hours of use, which works out to 20 to 25 years with the proper maintenance, of course. That depends on how much you use it, so a diesel generator used for emergencies a couple of times a year will last a lot longer than a generator that takes over for a faulty electrical grid every month for a day or two. 

If your home already has a grinder pump and you’re still noticing issues (like frequently clogged toilets and sinks), it could be time to upgrade your grinder pump. Start by checking your existing horsepower. If there are four or fewer people living in your home, using a 1/2-horsepower grinder pump should be sufficient. Larger households should consider investing in a 1-horsepower grinder pump to maximize wastewater removal efforts.

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.