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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon599
    Verified electrical services reviews

Find Electricians in Shrewsbury

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
948 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 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
239 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 Moises Sarante

Moises Sarante

5.00(
4
)
Approved Pro

Moises Sarante

5.00(
4
)
Approved Pro
13 years of experience

We pride ourselves on being the best Electrical company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Excellent service, very professional, responsible and reliable "

Grissel G on January 2025

We pride ourselves on being the best Electrical company in the area. We've built an excellent reputation for customer satisfaction by providing quick estimates, a great attention to detail, and competitive pricing. Being a screened and approved professional gives you the peace of mind you need to allow us to give your home the attention it deserves. Call us today and let's get started!

"Excellent service, very professional, responsible and reliable "

Grissel G on January 2025


Avatar for Khan Design

Khan Design

4.56(
9
)
Approved Pro

Khan Design

4.56(
9
)
Approved Pro
Customers say: Quick response
11 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 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


Joseph Lapomardo, Electrician

4.97(
255
)
Approved Pro

Joseph Lapomardo, Electrician

4.97(
255
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
42 local quotes requested

I pride my company on reliability, great communication, integrity, and quality work. I am an expert in my trade and will do my best to keep you as educated as I can on your particular task or project. I work hard for my 5 star reviews and hope to earn your business and trust. Please note I only do SERVICE UPGRADES/PANEL CHANGES AND EV CAR CHARGERS AND GENERATOR HOOKUPS. Angi/Home Advisor charge per category of work you would like done so please make sure you pick the correct task and add a description so they can match you with me or the correct contractor for your project. Thank you.

"He was polite, efficient and completed the job quickly. Very polite and easy to deal with. "

Paul H on November 2025

I pride my company on reliability, great communication, integrity, and quality work. I am an expert in my trade and will do my best to keep you as educated as I can on your particular task or project. I work hard for my 5 star reviews and hope to earn your business and trust. Please note I only do SERVICE UPGRADES/PANEL CHANGES AND EV CAR CHARGERS AND GENERATOR HOOKUPS. Angi/Home Advisor charge per category of work you would like done so please make sure you pick the correct task and add a description so they can match you with me or the correct contractor for your project. Thank you.

"He was polite, efficient and completed the job quickly. Very polite and easy to deal with. "

Paul H on November 2025


Avatar for EvanTechs

EvanTechs

5.00(
13
)
Approved Pro

EvanTechs

5.00(
13
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
25 years of experience

For over 10 years, Evantechs has been providing voice and data services for residential and commercial customers. Our services include: design, expansion, and relocation services of existing telcom data and surveillance systems. Our experience enables us to design and install systems that are cost effective and optimized to your specific requirements. Our team of highly skilled technicians is professional, timely, and sensitive to the needs of the client. We don't simply install equipment, we provide solutions. Give us a call today! .

"He was very helpful, quick to understand what I needed. Was able to diagnose the issue, and what I was looking for was not practical. Made another recommendation that ended up being much better. He even made time for us on a Saturday, without giving us the runaround. I appreciate his service very much."

Paul L on November 2022

For over 10 years, Evantechs has been providing voice and data services for residential and commercial customers. Our services include: design, expansion, and relocation services of existing telcom data and surveillance systems. Our experience enables us to design and install systems that are cost effective and optimized to your specific requirements. Our team of highly skilled technicians is professional, timely, and sensitive to the needs of the client. We don't simply install equipment, we provide solutions. Give us a call today! .

"He was very helpful, quick to understand what I needed. Was able to diagnose the issue, and what I was looking for was not practical. Made another recommendation that ended up being much better. He even made time for us on a Saturday, without giving us the runaround. I appreciate his service very much."

Paul L on November 2022


Avatar for JBJ Systems, Inc.

JBJ Systems, Inc.

New on AngiNew on Angi
Approved Pro

JBJ Systems, Inc.

New on AngiNew on Angi
Approved Pro
4 years of experience

JBJ SYSTEMS provides innovative security systems, including video surveillance and access control, as well as advanced structured cabling and network solutions. Our expert technicians bring together experience and knowledge with trusted solutions, delivering results on time and on budget.

JBJ SYSTEMS provides innovative security systems, including video surveillance and access control, as well as advanced structured cabling and network solutions. Our expert technicians bring together experience and knowledge with trusted solutions, delivering results on time and on budget.


Avatar for 4th Generation Electric, Inc.

4th Generation Electric, Inc.

5.00(
6
)
Approved Pro

4th Generation Electric, Inc.

5.00(
6
)
Approved Pro
Super Service Award
Customers say: Quick response
71 local quotes requested
14 years of experience

At 4th Generation Electric, we proudly uphold a legacy of excellence in electrical services that spans four generations. For 13 years, we've been delivering top-tier residential electrical solutions. Our mission is to provide comprehensive and cutting-edge design, installation, and upgrades. As a certified Generac dealer, we specialize in backup power solutions and EV charger installations. Our team, with unmatched expertise, is dedicated to analyzing, troubleshooting, and solving all your electrical needs. Trust 4th Generation Electric to deliver innovative solutions for the modern electrical world. Your satisfaction and safety are our top priorities.

"With the latest job John and his team completed for us, I am now able to say that for the better part of two decades, the electrical work needs of four generations of my family have been completed by 4th Generation Electric. As John and I were catching up before the install of our transfer switch and generator hook up, he recalled when we first met almost 20 years ago. From that time forward, he and his teams have completed work for my family that spanned from outlet installation and replacement, wiring our full new build construction home, inclusive of aiding with the installation of the power line from the street (which was 700 feet away from the house), outside patio electrical work for an elaborate tiered landscape, generator hook up requirements, among other things. Just as our electrical needs grew over time, and John and 4th Generation Electric have as well, the same level of attention to detail, focus on customer satisfaction, and not only the desire to strive for perfection but the expectation to do so, has been the standard that he knows not only his customers expect but that he expects for himself and his teams. It’s easy to write a review like this when it writes itself. If you have any sort of electrical work needs, big or small, you’d be doing yourself a disservice not asking John for a quote."

Joe F on September 2024

At 4th Generation Electric, we proudly uphold a legacy of excellence in electrical services that spans four generations. For 13 years, we've been delivering top-tier residential electrical solutions. Our mission is to provide comprehensive and cutting-edge design, installation, and upgrades. As a certified Generac dealer, we specialize in backup power solutions and EV charger installations. Our team, with unmatched expertise, is dedicated to analyzing, troubleshooting, and solving all your electrical needs. Trust 4th Generation Electric to deliver innovative solutions for the modern electrical world. Your satisfaction and safety are our top priorities.

"With the latest job John and his team completed for us, I am now able to say that for the better part of two decades, the electrical work needs of four generations of my family have been completed by 4th Generation Electric. As John and I were catching up before the install of our transfer switch and generator hook up, he recalled when we first met almost 20 years ago. From that time forward, he and his teams have completed work for my family that spanned from outlet installation and replacement, wiring our full new build construction home, inclusive of aiding with the installation of the power line from the street (which was 700 feet away from the house), outside patio electrical work for an elaborate tiered landscape, generator hook up requirements, among other things. Just as our electrical needs grew over time, and John and 4th Generation Electric have as well, the same level of attention to detail, focus on customer satisfaction, and not only the desire to strive for perfection but the expectation to do so, has been the standard that he knows not only his customers expect but that he expects for himself and his teams. It’s easy to write a review like this when it writes itself. If you have any sort of electrical work needs, big or small, you’d be doing yourself a disservice not asking John for a quote."

Joe F on September 2024


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

A 3-prong, 15-amp, 120-volt outlet is standard in the U.S. These have two vertical slots and a U-shaped grounding hole, which suits most home electronics, from televisions to microwaves. Three-pronged outlets are safer than 2-pronged ones, as the third wire, known as the grounding wire, helps prevent shocks and electrical fires.

While not always necessary, wiring your circuit breaker in a certain way can ease both the installation process and use afterward. For starters, you’ll need to install the electrical panel so that the main service knockout aligns with the cable conduit. If they aren’t aligned, you may not have sufficient working space to finish running the wires. Using cable trays, on the other hand, gives you a bit more freedom to and flexibility in where and which direction you install the wires. At the end of the day, the power flow will be the same whether the cords run up or down.

You're in luck, because replacing a breaker panel is not a regular occurrence that most homeowners have to worry about. Electrical breaker panels last 25 to 40 years, assuming you properly maintain your system and conduct annual inspections. Factors like load demand and exposure to the elements slightly reduce a breaker panel’s lifespan.

Smoke detectors come in two different options: hardwired or battery-operated. While hardwired units are attached directly to the home’s electrical system, a battery-operated smoke detector only needs a simple battery for operation and can be placed virtually anywhere in your home. Some homeowners may mistakenly think their battery-operated units are hardwired in because all their units are interconnected, but many battery-operated units can operate within a smoke alarm network in your home.

They can vary—a lot. For example, while the EU continues to move toward broader standardization, many different types of outlets still exist from country to country. Some local standards cared about polarization, and some didn’t. It’s similar to other countries around the world.

Generally, you’re less likely to find polarized outlets outside North America. However, alternative plugs and outlets often incorporate precautions so that accidentally touching live prongs on a plug is hard or impossible. You may also find interesting regulations overseas that limit the use of outlets in bathrooms or near sinks to decrease the chance of shock.

The Shrewsbury, MA homeowners’ guide to electrical services

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