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    Average homeowner rating
  • Verified reviews icon422
    Verified electrical services reviews

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Avatar for Cotti-Johnson Heating-Cooling-Electrical

Cotti-Johnson Heating-Cooling-Electrical

4.68(
155
)
Approved Pro

Cotti-Johnson Heating-Cooling-Electrical

4.68(
155
)
Approved Pro
Customers say: Super punctual
Recommended by 90% of Angi customers
Recommended by 90% of HomeAdvisor customers
951 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 Nicholson Plumbing Heating & Air Conditioning Inc

Nicholson Plumbing Heating & Air Conditioning Inc

4.54(
560
)
Approved Pro

Nicholson Plumbing Heating & Air Conditioning Inc

4.54(
560
)
Approved Pro
Customers say: Super punctual
59 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.

"Went very well and got more information than with other companies."

Susan H on April 2025

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.

"Went very well and got more information than with other companies."

Susan H on April 2025


Avatar for NETR Inc

NETR Inc

4.79(
76
)
Approved Pro

NETR Inc

4.79(
76
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
232 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 Ryan Silvia

Ryan Silvia

4.43(
7
)
Approved Pro

Ryan Silvia

4.43(
7
)
Approved Pro
Customers say: Quick response
2 years of experience
Free onsite estimate

Here at R.Silvia Electrical Contractor we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call or text 4012637151

"Ryan was on time, assessed and explained the problem(s), gave estimate, purchased materials, provided receipts and did not inflate his hours worked and provided accurate billing. He did everything that needed to be done today in a straightforward and professional manner. I put his name and number in my contacts for future needs."

Tom C on October 2025

Here at R.Silvia Electrical Contractor we take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumers needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call or text 4012637151

"Ryan was on time, assessed and explained the problem(s), gave estimate, purchased materials, provided receipts and did not inflate his hours worked and provided accurate billing. He did everything that needed to be done today in a straightforward and professional manner. I put his name and number in my contacts for future needs."

Tom C on October 2025


Avatar for D.E.S. Systems, LLC

D.E.S. Systems, LLC

5.00(
32
)
Approved Pro

D.E.S. Systems, LLC

5.00(
32
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
34 local quotes requested

D.E.S Systems, LLC. is a full-service electrical and security contractor, proudly serving Eastern & Central Massachusetts. We can handle any of your electrical needs as well as security systems and audio-visual installations. At least half of our business is from client referrals, and we're proud to guarantee that you will be satisfied with our work. We are very well respected in our expertise services in the following areas: Appliances Circuits, Ceiling Fan Installations, Bath fan installations, Data Communication Lines, New Construction- Remodeling Wiring, Hot Tub & Spas, Outlets & Circuits, Service Panel Upgrades, trouble shooting short circuits , Home Audio- Theater, Multi room Audio, Home Automation, and still a lot more! Security Systems : Choosing the right type of alarm system for you and your family is important. You want to find one that is best for you and at the best price. D.E.S. Systems, LLC is the source for all your alarm system needs. We currently install, monitor and service CADDX and DSC security systems. There are many devices that may be integrated with your security systems. A few examples are: Smoke Detectors, Carbon Monoxide Detectors, Water & Temperature Sensors, Keyless Entry Systems, Local & Remote Surveillance Systems. 100% Customer satisfaction guaranteed! Attention first time customers: Free Installation of a GFI receptacle in place of an existing unprotected receptacle with any job exceeding $500.

"I requested Steve to do some electrical work around the house (I am not handy) based on some positive reviews i saw online. - Steve came promptly at the appointed time. Was very polite and friendly .. - Work I needed was -- new circuit to be installed for my sump pump (the old circuit has too many appliances attached to it and was tripping) -- An outdoor floodlight had shattered - wanted to get a new one installed at a slightly higher location -- Had some electrical outlets in some very tight spaces that i wanted to replace with fixtures that would not break -- a light in a very tight space was not working (an earlier electrical contractor had "mis-wired" it. Steve did all of this during the course of about 6 hours. He was friendly, efficient and cleaned up everything after the job. I would hire Steve again in a heartbeat for any electrical work. PS: I do not know Steve - i hired him based on the positive online reviews I saw and his proximity to my house - I was definitely apprehensive but he worked out great. Hopefully this positive review will serve some other homeowner in good stead too !"

Ajay S on May 2018

D.E.S Systems, LLC. is a full-service electrical and security contractor, proudly serving Eastern & Central Massachusetts. We can handle any of your electrical needs as well as security systems and audio-visual installations. At least half of our business is from client referrals, and we're proud to guarantee that you will be satisfied with our work. We are very well respected in our expertise services in the following areas: Appliances Circuits, Ceiling Fan Installations, Bath fan installations, Data Communication Lines, New Construction- Remodeling Wiring, Hot Tub & Spas, Outlets & Circuits, Service Panel Upgrades, trouble shooting short circuits , Home Audio- Theater, Multi room Audio, Home Automation, and still a lot more! Security Systems : Choosing the right type of alarm system for you and your family is important. You want to find one that is best for you and at the best price. D.E.S. Systems, LLC is the source for all your alarm system needs. We currently install, monitor and service CADDX and DSC security systems. There are many devices that may be integrated with your security systems. A few examples are: Smoke Detectors, Carbon Monoxide Detectors, Water & Temperature Sensors, Keyless Entry Systems, Local & Remote Surveillance Systems. 100% Customer satisfaction guaranteed! Attention first time customers: Free Installation of a GFI receptacle in place of an existing unprotected receptacle with any job exceeding $500.

"I requested Steve to do some electrical work around the house (I am not handy) based on some positive reviews i saw online. - Steve came promptly at the appointed time. Was very polite and friendly .. - Work I needed was -- new circuit to be installed for my sump pump (the old circuit has too many appliances attached to it and was tripping) -- An outdoor floodlight had shattered - wanted to get a new one installed at a slightly higher location -- Had some electrical outlets in some very tight spaces that i wanted to replace with fixtures that would not break -- a light in a very tight space was not working (an earlier electrical contractor had "mis-wired" it. Steve did all of this during the course of about 6 hours. He was friendly, efficient and cleaned up everything after the job. I would hire Steve again in a heartbeat for any electrical work. PS: I do not know Steve - i hired him based on the positive online reviews I saw and his proximity to my house - I was definitely apprehensive but he worked out great. Hopefully this positive review will serve some other homeowner in good stead too !"

Ajay S on May 2018


Avatar for Khan Design

Khan Design

4.56(
9
)
Approved Pro

Khan Design

4.56(
9
)
Approved Pro
Customers say: Quick response
12 local quotes requested
6 years of experience

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality of our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"VERY POOR"

Yash S on October 2025

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality of our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"VERY POOR"

Yash S on October 2025


Avatar for Motha Electric

Motha Electric

New on AngiNew on Angi
Approved Pro

Motha Electric

New on AngiNew on Angi
Approved Pro
40 years of experience
Free onsite estimate

Motha Electric provides our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

Motha Electric provides our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!


Avatar for Joseph Jackson

Joseph Jackson

5.00(
53
)
Approved Pro

Joseph Jackson

5.00(
53
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
3 years of experience

With over three decades of experience, I am dedicated to delivering exceptional service in every aspect of my business. My unique distinction is in the quality of service I provide to my customers and my communications throughout the project. Above all, I prioritize the well-being and satisfaction of my customers.

"Joseph did an excellent job installing my Tesla Wall Connector. He was on time, very professional, and completed the work quickly with great attention to detail. The installation looks clean and works perfectly. He also took the time to explain everything and made sure it was tested before leaving. I’m very satisfied with the service and highly recommend him for any electrical work."

Krishna J on August 2025

With over three decades of experience, I am dedicated to delivering exceptional service in every aspect of my business. My unique distinction is in the quality of service I provide to my customers and my communications throughout the project. Above all, I prioritize the well-being and satisfaction of my customers.

"Joseph did an excellent job installing my Tesla Wall Connector. He was on time, very professional, and completed the work quickly with great attention to detail. The installation looks clean and works perfectly. He also took the time to explain everything and made sure it was tested before leaving. I’m very satisfied with the service and highly recommend him for any electrical work."

Krishna J on August 2025


Avatar for J M Electrical Company, Inc.

J M Electrical Company, Inc.

5.00(
4
)
Approved Pro

J M Electrical Company, Inc.

5.00(
4
)
Approved Pro
Customers say: Quick response
11 local quotes requested
40 years of experience

With 35+ years of experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"First and foremost, Joel was a pleasure to work with! Joel was extremely knowledgeable and helpful with the installation of our new Google nest. We were impressed with how prompt & easy going he was! Definitely going to be using him & recommending to family & friends."

Shane O on July 2021

With 35+ years of experience, we work hard to bring each customer the best possible service and quality available. We look forward to working with you on your next project. We welcome your questions and thank you for your interest.

"First and foremost, Joel was a pleasure to work with! Joel was extremely knowledgeable and helpful with the installation of our new Google nest. We were impressed with how prompt & easy going he was! Definitely going to be using him & recommending to family & friends."

Shane O on July 2021


Avatar for EITS

EITS

5.00(
12
)
Approved Pro

EITS

5.00(
12
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
27 years of experience

Executive IT Strategies is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 20 years of experience in computer networking.. Call today and let us put our experience to work for you!

"Smooth process from beginning to end. Bruce and his team were attentive and thorough. A pleasure!"

Craig F on May 2024

Executive IT Strategies is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 20 years of experience in computer networking.. Call today and let us put our experience to work for you!

"Smooth process from beginning to end. Bruce and his team were attentive and thorough. A pleasure!"

Craig F on May 2024

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Electrical questions, answered by experts

Whether or not a pool needs a dedicated circuit depends on the electrical needs of the motor, lights, and pump. Keep in mind that pool motors can use a lot of electricity. A dedicated circuit can prevent the breaker from tripping whenever you use the pool. A small motor for an equally small pool may only need a GFCI outlet. It’s best to plug it directly into the outlet rather than using an extension cord. You should also consult an electrician to ensure your pool’s electrical system is in accordance with local regulations.

Many wire nuts can accommodate three wires of various gauges; you should check the packaging of the nut to confirm you are buying the correct size. In addition, there are screw terminals that accommodate various numbers of wires; these might also be called “terminal blocks,” and exist to connect multiple wires. 

Electrical fires are unique from other fire types because they have the potential to deliver electric shocks in addition to being on fire. Avoid serious injury from possible electrical emergency situations by avoiding the use of water, foam-based fire extinguishers, wet-chemical fire extinguishers,  flour, or baking powder to put out an electrical fire. 

Before the widespread use of PVC, affixing a ground wire to plumbing pipes was generally considered to be an acceptable workaround. Nowadays, not so much. There are plenty of nonmetallic water pipes and fittings out there, so any ground previously provided by the metallic piping would be interrupted in these cases, which is dangerous.

If one plug in your outlet works but the other doesn't, it could be due to a few reasons. The outlet might have a loose or damaged internal connection on the non-working side. Another possibility is that the outlet is a split receptacle, with one half controlled by a wall switch that might be turned off. Additionally, debris or damage inside the non-working plug could prevent a proper connection. If you can't identify the issue, remember to prioritize safety. Replace the outlet or consult a professional electrician to ensure safety and proper functionality.

The Dover, MA homeowners’ guide to electrical services

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