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    Verified electrical services reviews

Find Electricians in Portsmouth

Avatar for Robert Electrical Services

Robert Electrical Services

4.86(
160
)
Approved Pro

Robert Electrical Services

4.86(
160
)
Approved Pro
Customers say: Quality work
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
24 local quotes requested

Martin Robert Electric Service is a family owned, full-service, electrical systems installation & repair company. With over 30 years of experience in both the electrical and communications fields, we have the expertise to take on your next new construction, remodeling project, or emergency call. As an authorized Generac generator dealer, consult with us when considering emergency back-up power for your home or business facility. Include us as a member of your team of favored contractors when updating your kitchen, attic, basement level living space. Customer care is of the highest priority. We see satisfied customers as the "engine" driving future success. Maintaining good communications with you is our guarantee. Recent customer submitted reviews can be accessed through the "Testimonials" page at our website. Martin Robert Electric Service looks forward to working with you and promises competitive pricing on your next project. NH Lic. #8409M, Maine Lic. # MS60018611

"Quick response and great communication. Job finished quickly and effectively"

Michael A on November 2025

Martin Robert Electric Service is a family owned, full-service, electrical systems installation & repair company. With over 30 years of experience in both the electrical and communications fields, we have the expertise to take on your next new construction, remodeling project, or emergency call. As an authorized Generac generator dealer, consult with us when considering emergency back-up power for your home or business facility. Include us as a member of your team of favored contractors when updating your kitchen, attic, basement level living space. Customer care is of the highest priority. We see satisfied customers as the "engine" driving future success. Maintaining good communications with you is our guarantee. Recent customer submitted reviews can be accessed through the "Testimonials" page at our website. Martin Robert Electric Service looks forward to working with you and promises competitive pricing on your next project. NH Lic. #8409M, Maine Lic. # MS60018611

"Quick response and great communication. Job finished quickly and effectively"

Michael A on November 2025


Diamond Electrical Contractors, LLC

4.83(
75
)
Approved Pro

Diamond Electrical Contractors, LLC

4.83(
75
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
10 local quotes requested

We are not currently offering smaller electrical services, including outlets, fixtures, running wire or panels for things that are not in the home like rvs or boats. We only service electrical panel upgrades within the home and the average cost for this service is around 5000$ but cost will go up or vary according to scope of project. At Diamond Electrical Contractors, LLC our training and experience is second to none. For electrical work you can trust, call the professionals at Diamond Electrical Contractors today!

"I am writing to express my sincere appreciation for the outstanding work performed by Diamond Electric during a recent electrical service upgrade at our property. From start to finish, the entire crew demonstrated professionalism, punctuality, and exceptional craftsmanship. They arrived on time, communicated clearly throughout the process, and completed the work efficiently and safely. What stood out most was their attention to detail—even the smallest aspects of the job were handled with care and precision. It’s not often that you come across contractors who combine technical expertise with such a strong commitment to quality and customer satisfaction. I would not hesitate to work with them again, and I highly recommend their services to anyone in need of electrical work."

David R on July 2025

We are not currently offering smaller electrical services, including outlets, fixtures, running wire or panels for things that are not in the home like rvs or boats. We only service electrical panel upgrades within the home and the average cost for this service is around 5000$ but cost will go up or vary according to scope of project. At Diamond Electrical Contractors, LLC our training and experience is second to none. For electrical work you can trust, call the professionals at Diamond Electrical Contractors today!

"I am writing to express my sincere appreciation for the outstanding work performed by Diamond Electric during a recent electrical service upgrade at our property. From start to finish, the entire crew demonstrated professionalism, punctuality, and exceptional craftsmanship. They arrived on time, communicated clearly throughout the process, and completed the work efficiently and safely. What stood out most was their attention to detail—even the smallest aspects of the job were handled with care and precision. It’s not often that you come across contractors who combine technical expertise with such a strong commitment to quality and customer satisfaction. I would not hesitate to work with them again, and I highly recommend their services to anyone in need of electrical work."

David R on July 2025


Avatar for B and H Electric, LLC

B and H Electric, LLC

5.00(
3
)
Approved Pro

B and H Electric, LLC

5.00(
3
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
2 years of experience

You can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!

"Very friendly and took that time to make sure everything was done just right."

Paula M on December 2023

You can depend on us to provide a high quality service at a fair and honest price. We understand that the future of our business depends upon our reputation and that is why customer service is by far our highest priority. If you are looking for a professional you can trust, please call today to schedule a no-obligation estimate!

"Very friendly and took that time to make sure everything was done just right."

Paula M on December 2023


Avatar for Direct Electric, LLC

Direct Electric, LLC

5.00(
2
)
Approved Pro

Direct Electric, LLC

5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
3 years of experience

Direct Electric LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"He did an amazing job, everything was really good, everything was on time, pricing was good and I would use them over and over again."

Tyler R on April 2023

Direct Electric LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"He did an amazing job, everything was really good, everything was on time, pricing was good and I would use them over and over again."

Tyler R on April 2023


Sullivan Electric LLC

5.00(
1
)
Approved Pro

Sullivan Electric LLC

5.00(
1
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
4 years of experience

Tyler Sullivan is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"N/A"

Denise X on May 2022

Tyler Sullivan is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"N/A"

Denise X on May 2022


Matthew Wilson Electric

4.97(
31
)
Approved Pro

Matthew Wilson Electric

4.97(
31
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
6 years of 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!

"Matt is the best! My fiancé and I bought an old farm house and it had to be completely rewired. Matt is a super nice guy, was right on point with his estimate and the job was done quickly. I will recommend him to anyone who needs electrical work done. "

Jaime L on September 2025

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!

"Matt is the best! My fiancé and I bought an old farm house and it had to be completely rewired. Matt is a super nice guy, was right on point with his estimate and the job was done quickly. I will recommend him to anyone who needs electrical work done. "

Jaime L on September 2025


Avatar for Generator Supercenter of New Hampshire

Generator Supercenter of New Hampshire

4.93(
30
)
Approved Pro

Generator Supercenter of New Hampshire

4.93(
30
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
87 local quotes requested

Generator Supercenter of New Hampshire is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

"They were on time and very efficient, complete install done in one day. Many excellent additional features we took advantage of, such as surge suppressor and monitoring. Honest and dependable company to work with. Would recommend them without hesitation."

Brad M on February 2021

Generator Supercenter of New Hampshire is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business. As a father and son-owned business, we’re committed to the best service. When you call us, our estimates are free, so you can meet with a member of our team to learn about your options with no strings attached!

"They were on time and very efficient, complete install done in one day. Many excellent additional features we took advantage of, such as surge suppressor and monitoring. Honest and dependable company to work with. Would recommend them without hesitation."

Brad M on February 2021


"Jim provided options for components, timeline and cost for the repair of an older Sonos system. The job was completed expertly and quickly. Highly recommend NH Digital Group for audio visual residential service. I'm a happy customer!"

Kate J on October 2022

We are a locally owned and independent company with over 20 years of experience in home electronics. We understand technology is always changing and wont overcomplicate your solution!

"Jim provided options for components, timeline and cost for the repair of an older Sonos system. The job was completed expertly and quickly. Highly recommend NH Digital Group for audio visual residential service. I'm a happy customer!"

Kate J on October 2022


Avatar for ARETE ELECTRIC

ARETE ELECTRIC

5.00(
18
)
Approved Pro

ARETE ELECTRIC

5.00(
18
)
Approved Pro
Customers say: Quick response
53 local quotes requested
13 years of 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! Book with us online or feel free to give us a call today!

"⭐️⭐️⭐️⭐️⭐️ Arete 's Electrical Company did an excellent job installing mini-splits in my home! The team was professional, efficient, and took the time to explain everything clearly. The installation was clean, and the system works perfectly. I’m very happy with the results and would highly recommend Arete’s to anyone looking for quality electrical work! "

Kerri P on November 2025

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! Book with us online or feel free to give us a call today!

"⭐️⭐️⭐️⭐️⭐️ Arete 's Electrical Company did an excellent job installing mini-splits in my home! The team was professional, efficient, and took the time to explain everything clearly. The installation was clean, and the system works perfectly. I’m very happy with the results and would highly recommend Arete’s to anyone looking for quality electrical work! "

Kerri P on November 2025


Avatar for MW Driscoll Electric, LLC

MW Driscoll Electric, LLC

5.00(
2
)
Approved Pro

MW Driscoll Electric, LLC

5.00(
2
)
Approved Pro
101 local quotes requested
25 years of experience

We offer over 30 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"Mike was excellent! He put in a ceiling light (where there was no light before), replaced a ceiling light and put in a new outlet. He was efficient, courteous and most importantly did the job well! We will definitely hire him again. "

Ashley C on July 2025

We offer over 30 years of experience in the electrical industry. We take on a wide range of electrical projects to include full installation for additions and remodels as well as wiring and panel upgrades and a variety of other jobs. We're committed to providing a personalized service for each individual project we take on & look forward to building strong, long-term relationships with our clients and guarantee your satisfaction.

"Mike was excellent! He put in a ceiling light (where there was no light before), replaced a ceiling light and put in a new outlet. He was efficient, courteous and most importantly did the job well! We will definitely hire him again. "

Ashley C on July 2025

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Electrical questions, answered by experts

Compared to amps, volts, and watts, ohms are a different kind of measurement, though also very common. Ohms show the resistance of materials like wiring: How much they impede the flow of electrons. The reason household wiring is usually copper or aluminum is that these materials are affordable and also have lower ohms, which means low resistance/high conductivity.

Heated floors use less electricity than traditional heating systems. The average electric bill for running radiant floor heating nonstop is around $3 per day. For example, a 1,500-watt electric space heater costs around $4.80 per day, a 27,000-BTU electric boiler costs around $6.25 per day, and a 100,000-BTU electric heater costs $46 per day.

Breakers are designed to trip and be reset, so there’s no countdown to when it will malfunction. The danger lies in a break tripping multiple times in a row without—well, a break. The breaker and the wires need time to cool down after an overload. Multiple tripping in short succession exacerbates the problem that breakers are preventing, overheating the electrical components and causing damage. That damage can extend to the breaker itself, so a breaker that trips a lot in a short timespan may trip accidentally afterward.

The Biden Administration banned the sale of incandescent light bulbs for general service lamps in 2023. All household light bulbs must meet a minimum efficiency of 45 lumens per watt, three times that of a standard incandescent light bulb. 

The main motivation was to improve energy efficiency and reduce carbon emissions. It is expected that banning incandescent light bulbs will cut over 200 million metric tons of carbon emissions over the next 30 years. Some bulbs are exempt, like chandelier lights and Christmas lights.

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.

The Portsmouth, NH homeowners’ guide to electrical services

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

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