Top-rated generator install pros.

Get matched with top generator install pros in Walpole, MA

There are 12 highly-rated local generator install pros.

Verified Reviews for Generator Install pros in Walpole, MA

*The Angi rating for Generator Install companies in Walpole, MA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

*The HomeAdvisor rating for Generator Install companies in Walpole, MA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Generator Install needs.

Last update on October 26, 2025

Find Generator install pros in Walpole

Avatar for Nicholson Plumbing Heating & Air Conditioning Inc

Nicholson Plumbing Heating & Air Conditioning Inc

71 Whitney Street
4.54(
560
)
•Approved Pro

Nicholson Plumbing Heating & Air Conditioning Inc

71 Whitney Street
4.54(
560
)
•Approved Pro
Customers say: Super punctual
52 local quotes requested
25 years of experience

Nicholson Plumbing, Heating & Air Conditioning is the company of choice for all your plumbing, heating and air conditioning repair and replacement needs. Our commitment is to you, our customer, and to provide you with outstanding plumbing and HVAC service. You can rest assured with our 100% satisfaction guarantee, 24-hour emergency service, solid warranty and highly trained technicians. Serving the Metro West, MA's service and installation needs. Fully Licensed in MA Plumbing and Gas Fitting. Lic# 30207. Universal EPA Certified & 410A Certified. Fully Insured. Nicholson Plumbing, Heating & Air Conditioning offers a 5% senior discount on service repairs.

"Frances looked at our 20 year old furnace that needed to be replaced. He walked us through the different furnaces that we could replace with our 20 year old furnace that needed to be replaced. He was very professional explaining the different furnaces and my husband and I settled on a furnace which will be installed on Wednesday. Nicholson Pluming is fortunate to have Frances as a employee."

Kathryn R on May 2022

Nicholson Plumbing, Heating & Air Conditioning is the company of choice for all your plumbing, heating and air conditioning repair and replacement needs. Our commitment is to you, our customer, and to provide you with outstanding plumbing and HVAC service. You can rest assured with our 100% satisfaction guarantee, 24-hour emergency service, solid warranty and highly trained technicians. Serving the Metro West, MA's service and installation needs. Fully Licensed in MA Plumbing and Gas Fitting. Lic# 30207. Universal EPA Certified & 410A Certified. Fully Insured. Nicholson Plumbing, Heating & Air Conditioning offers a 5% senior discount on service repairs.

"Frances looked at our 20 year old furnace that needed to be replaced. He walked us through the different furnaces that we could replace with our 20 year old furnace that needed to be replaced. He was very professional explaining the different furnaces and my husband and I settled on a furnace which will be installed on Wednesday. Nicholson Pluming is fortunate to have Frances as a employee."

Kathryn R on May 2022

Avatar for Cotti-Johnson Heating-Cooling-Electrical

Cotti-Johnson Heating-Cooling-Electrical

30 Waverly St
4.68(
155
)
•Approved Pro

Cotti-Johnson Heating-Cooling-Electrical

30 Waverly St
4.68(
155
)
•Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
969 local quotes requested

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025

Experiencing issues with your heating, air conditioning, plumbing, or electrical systems? Cotti-Johnson is your reliable one-stop shop for all home comfort needs. From simple fixes to large-scale projects, our professional team handles everything with honesty and expertise. We offer 24/7 emergency services and specialized design services for landscape and indoor lighting. Trust us for top-notch, efficient, and transparent service. Visit our website at callcotti.com or call us at (833) 826-8844 to see how we can improve your home's comfort and efficiency.

"Happy with the work, and the customer service. Will definitely call on them for future work."

Fran P on June 2025

Avatar for Rodenhiser Home Services

Rodenhiser Home Services

325 Hopping Brook Rd
4.39(
506
)
•Approved Pro

Rodenhiser Home Services

325 Hopping Brook Rd
4.39(
506
)
•Approved Pro
Customers say: Super punctual
394 local quotes requested
97 years of experience

When it comes to great service for your home or business, it doesn't get better than the professionalism and dedication of Rodenhiser. It's an unsurpassed level of service built on a promise that ensures you get the very best - when you call Rodenhiser your satisfaction is guaranteed. With 90+ years of delighted residential and commercial clients, you can be sure that it's a promise that Rodenhiser delivers on every day.

"The work was done correctly and promptly, but quite expensive. On the plus side, he presented all the options and didn't really try to upsell. Just the facts."

Stephen M on August 2024

When it comes to great service for your home or business, it doesn't get better than the professionalism and dedication of Rodenhiser. It's an unsurpassed level of service built on a promise that ensures you get the very best - when you call Rodenhiser your satisfaction is guaranteed. With 90+ years of delighted residential and commercial clients, you can be sure that it's a promise that Rodenhiser delivers on every day.

"The work was done correctly and promptly, but quite expensive. On the plus side, he presented all the options and didn't really try to upsell. Just the facts."

Stephen M on August 2024

Avatar for Ronald G Perry

Ronald G Perry

Located In In Norton
5.00(
32
)
•Approved Pro

Ronald G Perry

Located In In Norton
5.00(
32
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
30 local quotes requested

We are family owned and operated with over 30 years of experience! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call for a quote today.

"Ron was excellent. I had a power-surge in my house, a scary situation. Happened on a Sunday Morning. Went on Angis list. Ron was the first to call, although he could not come that day (went to Pats game, who can blame him) he gave me some very helpful advise to start diagnosing the problem. As promise he did come Monday morning and was very thorough in evaluating the problem. We worked on a resolution together, set a plan in place, order parts together. He said he would be back on Thursday to replace main breaker, he actually called on Wednesday to say he can come a day early to fix the panel! Work is all done, very reasonable, very accommodating. So happy I connected with Ron, would HIGHLY recommend Ron for any electrical service/repair/install. I'm keeping his card, I'll be calling him again for any service I may need in the future! Thanks Ron!"

Robert M on September 2021

We are family owned and operated with over 30 years of experience! We guarantee your satisfaction, and we won’t leave until the job is done right. Our team has quality experience in this industry, and we make sure our customers are happy before we leave. Call for a quote today.

"Ron was excellent. I had a power-surge in my house, a scary situation. Happened on a Sunday Morning. Went on Angis list. Ron was the first to call, although he could not come that day (went to Pats game, who can blame him) he gave me some very helpful advise to start diagnosing the problem. As promise he did come Monday morning and was very thorough in evaluating the problem. We worked on a resolution together, set a plan in place, order parts together. He said he would be back on Thursday to replace main breaker, he actually called on Wednesday to say he can come a day early to fix the panel! Work is all done, very reasonable, very accommodating. So happy I connected with Ron, would HIGHLY recommend Ron for any electrical service/repair/install. I'm keeping his card, I'll be calling him again for any service I may need in the future! Thanks Ron!"

Robert M on September 2021

Avatar for FM Generator

FM Generator

35 Pequit St
4.70(
20
)
•Approved Pro

FM Generator

35 Pequit St
4.70(
20
)
•Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
37 local quotes requested

We are a full-service home generator provider offering turnkey residential installations, service contracts, and emergency response, we also install whole home backup batteries.***WE DO NOT SERVICE PORTABLE GENERATORS** Family owned and operated, we have sold, installed and serviced generators for over 40 years! Our history is working with commercial generators, so we know the importance of reliability! Reliability is our product which is why we sell Fortress, an exclusive Briggs and Stratton brand of home generators. We can even save you money on a smaller generator with the Symphony II Home Power Management System! FM Generator - Keeping Families Powered for over 40 years! **Fully installed automatic home power system packages starting at $7,500**

"They were able to send someone to the house within a few days of initial contact. He wasn’t able to troubleshoot the problem directly but he was able to reach out to someone who could and everything was taken care of quickly and efficiently. Would absolutely contact them again in the future!"

Amanda F on January 2025

We are a full-service home generator provider offering turnkey residential installations, service contracts, and emergency response, we also install whole home backup batteries.***WE DO NOT SERVICE PORTABLE GENERATORS** Family owned and operated, we have sold, installed and serviced generators for over 40 years! Our history is working with commercial generators, so we know the importance of reliability! Reliability is our product which is why we sell Fortress, an exclusive Briggs and Stratton brand of home generators. We can even save you money on a smaller generator with the Symphony II Home Power Management System! FM Generator - Keeping Families Powered for over 40 years! **Fully installed automatic home power system packages starting at $7,500**

"They were able to send someone to the house within a few days of initial contact. He wasn’t able to troubleshoot the problem directly but he was able to reach out to someone who could and everything was taken care of quickly and efficiently. Would absolutely contact them again in the future!"

Amanda F on January 2025

Avatar for NETR Inc

NETR Inc

85 FLAGSHIP DR
4.79(
76
)
•Approved Pro

NETR Inc

85 FLAGSHIP DR
4.79(
76
)
•Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
248 local quotes requested

For emergency services, please call 781-933-6387. N.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work. Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Before installing a mini-split, the sales person told me that I'd need to cut down an interior shelf to a specific height. I paid a handyman $400 to do exactly what the sales person instructed. Later on, N.E.T.R. came and did the installation; however, AFTER the installation, a technician told me that they hadn't accounted for the vent opening and closing and that the shelf would need to be further cut down. As you can imagine, this type of service is rather ridiculous. If they knew that the shelf would need further cutting, they should have NOT installed the unit. I have called N.E.T.R. six (6) times in three weeks, and no one has called me back about this issue. After paying for the unit and for a handyman, it's ridiculous that I have AC that is compromised because no one with the company thought to properly measure the space so that the work by the handyman could be done once. At this point, I'd like for N.E.T.R. to take care of this for me."

Linda O on June 2025

For emergency services, please call 781-933-6387. N.E.T.R., Inc. is here to help homeowners install the best heating and cooling systems that fits their needs. Since 1989, we’ve installed heating and cooling systems in Boston and its surrounding areas, tackling tough problems that our clients face. Our goal is to ensure our clients have energy efficient, quiet, reliable systems so they can live their lives to the fullest both at home and at work. Our dedication to our customers’ needs is what drives us each and every day. Our approach to temperature control and comfort has helped us become one of the most respected names in heating, cooling, and refrigeration in New England

"Before installing a mini-split, the sales person told me that I'd need to cut down an interior shelf to a specific height. I paid a handyman $400 to do exactly what the sales person instructed. Later on, N.E.T.R. came and did the installation; however, AFTER the installation, a technician told me that they hadn't accounted for the vent opening and closing and that the shelf would need to be further cut down. As you can imagine, this type of service is rather ridiculous. If they knew that the shelf would need further cutting, they should have NOT installed the unit. I have called N.E.T.R. six (6) times in three weeks, and no one has called me back about this issue. After paying for the unit and for a handyman, it's ridiculous that I have AC that is compromised because no one with the company thought to properly measure the space so that the work by the handyman could be done once. At this point, I'd like for N.E.T.R. to take care of this for me."

Linda O on June 2025

Avatar for 3 Angels Electrical

3 Angels Electrical

225 Quincy Ave
4.50(
8
)
•Approved Pro

3 Angels Electrical

225 Quincy Ave
4.50(
8
)
•Approved Pro
Customers say: Quick response
56 local quotes requested
28 years of experience

With over 25years of professional, licensed electrical experience, our team of certified electricians is prepared to handle a wide range of electrical needs with precision and care. From installing new lighting fixtures and outlets to performing intricate electrical panel upgrades, we ensure every job meets the highest safety and quality standards. We also offer troubleshooting and installation services for modern smart home technologies, helping you integrate cutting-edge solutions into your home or business seamlessly. Contact us today for a free estimate, we look forward to serving you!

"Wish I could give 0 stars. A worker in one of their company vehicles was in a left only lane, while I was in a lane to go straight. There was no room for him to merge into my lane (traffic was a bit heavy). He continued to go into my lane, without a care and almost completely rammed me off the road. I am in a small car and the truck could’ve done severe damage in that moment. If this is how your employees are on the road, I don’t want to see how they are in the work field."

Anon A on October 2025

With over 25years of professional, licensed electrical experience, our team of certified electricians is prepared to handle a wide range of electrical needs with precision and care. From installing new lighting fixtures and outlets to performing intricate electrical panel upgrades, we ensure every job meets the highest safety and quality standards. We also offer troubleshooting and installation services for modern smart home technologies, helping you integrate cutting-edge solutions into your home or business seamlessly. Contact us today for a free estimate, we look forward to serving you!

"Wish I could give 0 stars. A worker in one of their company vehicles was in a left only lane, while I was in a lane to go straight. There was no room for him to merge into my lane (traffic was a bit heavy). He continued to go into my lane, without a care and almost completely rammed me off the road. I am in a small car and the truck could’ve done severe damage in that moment. If this is how your employees are on the road, I don’t want to see how they are in the work field."

Anon A on October 2025

Avatar for PW DiMasi Electric

PW DiMasi Electric

63 Boynton St
4.61(
38
)
•Approved Pro

PW DiMasi Electric

63 Boynton St
4.61(
38
)
•Approved Pro
Customers say: Quality work
27 local quotes requested
32 years of experience

We have been a Waltham based local electrical company since 1993. I Peter W DiMasi Master Electrician (15273A) owner of PW DiMasi Electric am committed to serving our customers with the best service and quality of work. We have courteous and qualified electricians that will complete any electrical job, small or large. We pride ourselves in quality, service and when the job is done, cleanliness! You will not need to clean after us. We are here for all your electrical needs from lighting design, installing an extra receptacle to wiring a new building. We install phone, cable TV, lighting, recessed lights, electric heat, service upgrades, circuit breakers, power generators, computer networking and much more. We are fully licensed and insured and have been vote best of the best since 2000.

"We hired PW DiMasi to install receded lighting in an upstairs office and could not be happier with the results. Peter, the owner, was prompt in scheduling a time to provide a project estimate and quoted us a fair price. He also showed up on the day of the project to introduce the two electricians that would be doing the work. The team was courteous, professional, and did a great job installing the lights. They also were careful to cover the room with tarps to minimize dust and cleaned up the workspace afterwards. If we have a future need for an electrician, PW DiMasi will be our first call."

Jeff F on January 2025

We have been a Waltham based local electrical company since 1993. I Peter W DiMasi Master Electrician (15273A) owner of PW DiMasi Electric am committed to serving our customers with the best service and quality of work. We have courteous and qualified electricians that will complete any electrical job, small or large. We pride ourselves in quality, service and when the job is done, cleanliness! You will not need to clean after us. We are here for all your electrical needs from lighting design, installing an extra receptacle to wiring a new building. We install phone, cable TV, lighting, recessed lights, electric heat, service upgrades, circuit breakers, power generators, computer networking and much more. We are fully licensed and insured and have been vote best of the best since 2000.

"We hired PW DiMasi to install receded lighting in an upstairs office and could not be happier with the results. Peter, the owner, was prompt in scheduling a time to provide a project estimate and quoted us a fair price. He also showed up on the day of the project to introduce the two electricians that would be doing the work. The team was courteous, professional, and did a great job installing the lights. They also were careful to cover the room with tarps to minimize dust and cleaned up the workspace afterwards. If we have a future need for an electrician, PW DiMasi will be our first call."

Jeff F on January 2025

J&G Electrical

58 Hall St.
5.00(
3
)
•Approved Pro

J&G Electrical

58 Hall St.
5.00(
3
)
•Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

With 8+ years experience, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Jon is professional, knowlegable and reliable. He provided expert insight on design and functionality before installing electrical and lighting components on several complex home improvement projects. Will continue to rely on his expertise and quality of work in the future."

Steve C on March 2024

With 8+ years experience, we pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Jon is professional, knowlegable and reliable. He provided expert insight on design and functionality before installing electrical and lighting components on several complex home improvement projects. Will continue to rely on his expertise and quality of work in the future."

Steve C on March 2024

Avatar for Amazan Electrical

Amazan Electrical

23 Belview Drive
5.00(
13
)
•Approved Pro

Amazan Electrical

23 Belview Drive
5.00(
13
)
•Approved Pro
Customers say: True professional
2 years of experience
Emergency services offered

Welcome to Amazan Electrical, proudly servicing from Leominster to Boston and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers we serve. Call us today! You will not be disappointed. As we travel to meet with you and go over your ideal electrical needs, there will be a $100 estimate fee. We look forward to working with you!

"Very professional and friendly personality. Completed the project same day. We were able to use our electricity that night. He even added on a requested project for me. Nice guy. Thank you very much!"

VIRGINIA P on December 2024

Welcome to Amazan Electrical, proudly servicing from Leominster to Boston and the surrounding areas. Our goal is to complete your project to perfection. We look forward to building long lasting relationships with the customers we serve. Call us today! You will not be disappointed. As we travel to meet with you and go over your ideal electrical needs, there will be a $100 estimate fee. We look forward to working with you!

"Very professional and friendly personality. Completed the project same day. We were able to use our electricity that night. He even added on a requested project for me. Nice guy. Thank you very much!"

VIRGINIA P on December 2024

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Generator Install questions, answered by experts

Many services include assembling the unit and securing it in the window. Confirm with your provider.

No, this is extremely dangerous, often illegal, and you should never attempt it. If you connect your generator to your home without a transfer switch, the generated power can backfeed, essentially flowing back into the utility lines. Backfeeding exposes a significant threat of fatalities or harm to you and utility personnel, in addition to jeopardizing the structural integrity of your home.

You can determine what size generator you need for a transfer switch by matching the switch to the largest outlet on your generator. Larger generators can power up to 10 circuits, while most 5,000-watt generators can provide power to six circuits. So, if your generator’s largest outlet is 30 amps, you’ll need a 30-amp transfer switch.

When properly maintained, natural gas generators can last a long time, as much as 20 to 40 years. They have relatively few needs compared to generators with other fuel types. However, the generator’s lifespan ultimately depends on how often the generator is used and for how long it’s left running.

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 Walpole, MA homeowners’ guide to generator installs

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

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