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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon30
    Verified generator installs reviews

Find Generator install pros in Wrentham

Avatar for Paul Foley Electric Co., Inc.
Paul Foley Electric Co., Inc.
4.7(
79
)

Serving Wrentham, MA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

At Premier Energy Solutions, your comfort and safety come first. We protect your home or business with turnkey, worry-free generator installations, HVAC systems, and electrical work — all backed by unmatched reliability and value.\n\nEvery project is handled by licensed professionals using top installation practices. From backup power to heating and cooling to electrical upgrades, we make it seamless, professional, and built to last.\n\nSince 1992, Premier Energy Solutions has grown from a licensed electrical contractor into a full-service power, comfort, and safety provider. We deliver a complete, turnkey experience — design, permitting, installation, testing, and support.\nGenerators. HVAC. Electrical. One trusted team.

3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Paul Foley Electric Co., Inc.
Paul Foley Electric Co., Inc.
4.8(
99
)

Serving Wrentham, MA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"Great company to work with. Wonderful staff and clear explanations every step of the way. Did everything they said they would do when they said they would do it. Very tidy and no mess despite having to excavate to put in the oil tank for the generator. Installation was done quickly and efficiently. Two years later all working very well and good annual service agreement. Would absolutely work with this company again and recommend them to anyone."
Auto Transfer Switch
Connection to propane tanks
Housekeeping pad
Trenching
Custom Poured Pad

+13

164 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Joseph Jackson
Joseph Jackson
5.0(
56
)

Serving Wrentham, MA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Joe came out promptly quoted in writing on installing my EV charger. I received other quotes and found his very competitive. He set up the appointment to install and was on time and did a great job on the installation and left the area in great shape. I would recommend his work."
Response time3 hrs
Response rate93%
Recommended by96%of homeowners
Avatar for VMA Electric Inc
VMA Electric Inc
4.8(
464
)

Serving Wrentham, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"We have had VMA do a couple of big projects done for us. This last project involved replacing the underground electrical line from the box near the sidewalk to the house. VMA coordinated everything, Eversource disconnect and reconnect, town inspection, excavation, laying of conduit containing the new line, and installation of the new meter. They also installed an additional conduit for a future fiber optic cable. I have recommended VMA to others because of the excellent communication, work ethic, efficiency, good value for the money, courtesy, and quality of work. They solved our difficult electrical problem in a very non-stressful way."
Needham Project
22kw Generac
27kw
20 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Champion Electrical Services Inc
Champion Electrical Services Inc
5.0(
54
)

Serving Wrentham, 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

241 neighbors recently requested a quote
Avatar for EIGHT ELECTRIC LLC
EIGHT ELECTRIC LLC
5.0(
22
)

Serving Wrentham, MA and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"Extremely satisfied with Andy and Kyle. They are both professional, knowledgeable and personable. They installed a new motor in the attic for our bathroom exhaust fans. A previous electrician had told us it would take maybe a few weeks to a month or more before he could secure a new motor. Andy got us one within a day! He also was able to diagnose and fix a crazy mess left from that previous electrician with wiring our old timer unit. We are so thankful we finally found a decent, caring electrician and would hire them again in an instant. We put our trust in them and were not disappointed. We highly recommend Belcastro Electric."
Ashburnham Solar
Kitchen Lighting
Chatham Fishing Dock
Lynn Seaport Marina
Rocky Point Fishing Pier

+168

Recommended by70%of homeowners
Avatar for Ryan Cassidy
Ryan Cassidy
5.0(
11
)

Serving Wrentham, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"Excellent service. Ryan was professional, flexible, quick with response time and very reasonably priced. I would highly recommend his company for any electrical work needed for your home."
Garage Sub Panel
Garage Circuit Lighting/Receptacles
Garage Circuit Lighting/Receptacles
Garage Circuit
Garage Circuit

+73

Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Cotti-Johnson Heating-Cooling-Electrical
Cotti-Johnson Heating-Cooling-Electrical
4.7(
166
)

Serving Wrentham, 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

66 neighbors recently requested a quote
Recommended by89%of homeowners
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Showing 1-10 of 130
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. 

Natural gas generators are designed to run for extended periods of time, such as power outages during a natural disaster. Since there’s no limit to the supply of natural gas, they don’t need to stop for refills. However, generators do need maintenance, including pauses to check and add oil. Constantly running them will also cause a lot more wear and tear, leading to a shorter lifespan.

Generators run on a variety of fuel types, ranging from natural gas to solar power. Keep in mind that fuel costs varying by type:

  • Natural gas: $2,000–$21,000 per year 

  • Liquid propane: $2,000–$21,000 per year

  • Diesel: $3,000–$20,000 per year

  • Gasoline: $500–$3,000 per year

  • Solar generator: $2,000–$25,000 per unit

  • Battery backup: $10,000–$25,000 per unit

Generally, you’ll want to keep between 60 and 70 feet between the generator and the transfer switch. There are a few reasons for this, including:

  • The distance reduces the noise coming from the generator into your home.

  • It increases efficiency because you won’t have a voltage drop from this short of a distance.

  • Prevents carbon monoxide poisoning: keep at least 15 feet between your generator and an open window. 

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.

The Wrentham, MA homeowners’ guide to generator installs

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