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Generator repair pros in Lancaster
Cotti Johnson has been a trusted name for over 75 years, providing expert HVAC, plumbing, and electrical services to homeowners in the Greater Boston area. We specialize in HVAC installation, repair, and maintenance, ensuring your home stays comfortable year-round. Our plumbing services range from leak repairs to new installations, while our licensed electricians handle all electrical needs, including panel upgrades and lighting installations. Trust Cotti Johnson for professional, reliable, and comprehensive home services.
"On time. Patient got the job done well"
Daniel r on November 2024
Cotti Johnson has been a trusted name for over 75 years, providing expert HVAC, plumbing, and electrical services to homeowners in the Greater Boston area. We specialize in HVAC installation, repair, and maintenance, ensuring your home stays comfortable year-round. Our plumbing services range from leak repairs to new installations, while our licensed electricians handle all electrical needs, including panel upgrades and lighting installations. Trust Cotti Johnson for professional, reliable, and comprehensive home services.
"On time. Patient got the job done well"
Daniel r on November 2024
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.
"I Hired Michael to put in new light fixtures in the kitchen and bathroom.He did an excellent job and was very honest and professional."
Jessica W on March 2025
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.
"I Hired Michael to put in new light fixtures in the kitchen and bathroom.He did an excellent job and was very honest and professional."
Jessica W on March 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.
"I reached out to Joe to inquire about an EV charger installation, and not only did he respond within a minute, but he was also available to complete the installation the same day at a time that was convenient for me. Outstanding service?five stars! I highly recommend him."
Matt E on March 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.
"I reached out to Joe to inquire about an EV charger installation, and not only did he respond within a minute, but he was also available to complete the installation the same day at a time that was convenient for me. Outstanding service?five stars! I highly recommend him."
Matt E on March 2025
Commercial Business Only. Our Team is as diverse as you need it to be. Our Help Desk Team can help your employees with their desktop support issues, such as MS Office, Gmail, and much more. We provide immediate access to our live IT support professional via telephone, chat, or e-mail 24 hours a day. Our Advisory Team can guide management as to how your company can move forward with new technology. We recognized the fundamental challenges of small to medium sized businesses to support an IT infrastructure as well implement, integrate and support cloud-based solutions. The benefits of partnering with NDX and using our NDX Cloud Platform Services removes the need of maintaining in-house skilled technical staff, allows for the focus on your business and not technology, predictable IT budgets and enables business flexibility and mobility.
"They were very professional and went far beyond what I expected. I'm am an architect and paying attention to detail is very important to me. I was very impressed and would highly recommend them to anyone. C D Calhoun"
CD Calhoun C on September 2023
Commercial Business Only. Our Team is as diverse as you need it to be. Our Help Desk Team can help your employees with their desktop support issues, such as MS Office, Gmail, and much more. We provide immediate access to our live IT support professional via telephone, chat, or e-mail 24 hours a day. Our Advisory Team can guide management as to how your company can move forward with new technology. We recognized the fundamental challenges of small to medium sized businesses to support an IT infrastructure as well implement, integrate and support cloud-based solutions. The benefits of partnering with NDX and using our NDX Cloud Platform Services removes the need of maintaining in-house skilled technical staff, allows for the focus on your business and not technology, predictable IT budgets and enables business flexibility and mobility.
"They were very professional and went far beyond what I expected. I'm am an architect and paying attention to detail is very important to me. I was very impressed and would highly recommend them to anyone. C D Calhoun"
CD Calhoun C on September 2023
We have over 10 years of experience in the business. Here at Hamilton Electric 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!
"We had a great experience with Ryan Hamilton Electric when they came to work on our building and in our apartment. We had discovered that the knob and tube wiring that we thought had been removed from our apartment was still present, and so we hired Ryan to remove the old type of wiring and bring our unit up to code. Ryan and his assistant Tim went above and beyond when it came to doing the work. Ryan explained very clearly to us exactly what the issues were with the knob and tube wiring and showed us exactly what had to be done to fix the problem. We had no surprises. While we were hiring Ryan to remove the old wiring, we also asked him about doing some other electrical work in our apartment. Ryan was happy to add on these further improvements and charge us only for the materials since we were already paying for the labor. Ryan listened to our desire for improved lighting and better outlets, and he presented solutions that would work for us and our kids. He found the perfect lighting fixtures for all the bedrooms and the bathroom, and he offered to improve lighting when it seemed necessary. The project took a few days; Ryan made sure we had the temporary lighting we would need in the evenings after he had completed work for the day. Ryan and Tim also cleaned up beautifully each afternoon when they were done with their work. Ryan and Tim didn't just do exemplary work. They were also warm, friendly, and affable, and a delight to have working in our apartment. We will actually miss having them around, but we were so impressed and delighted by their work that we plan to hire them again soon to improve the lighting in the kitchen and to install new outlets in the bedrooms. R. A. Hamilton Electric has my highest recommendation. I am a very happy and satisfied homeowner."
Michael B on October 2023
We have over 10 years of experience in the business. Here at Hamilton Electric 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!
"We had a great experience with Ryan Hamilton Electric when they came to work on our building and in our apartment. We had discovered that the knob and tube wiring that we thought had been removed from our apartment was still present, and so we hired Ryan to remove the old type of wiring and bring our unit up to code. Ryan and his assistant Tim went above and beyond when it came to doing the work. Ryan explained very clearly to us exactly what the issues were with the knob and tube wiring and showed us exactly what had to be done to fix the problem. We had no surprises. While we were hiring Ryan to remove the old wiring, we also asked him about doing some other electrical work in our apartment. Ryan was happy to add on these further improvements and charge us only for the materials since we were already paying for the labor. Ryan listened to our desire for improved lighting and better outlets, and he presented solutions that would work for us and our kids. He found the perfect lighting fixtures for all the bedrooms and the bathroom, and he offered to improve lighting when it seemed necessary. The project took a few days; Ryan made sure we had the temporary lighting we would need in the evenings after he had completed work for the day. Ryan and Tim also cleaned up beautifully each afternoon when they were done with their work. Ryan and Tim didn't just do exemplary work. They were also warm, friendly, and affable, and a delight to have working in our apartment. We will actually miss having them around, but we were so impressed and delighted by their work that we plan to hire them again soon to improve the lighting in the kitchen and to install new outlets in the bedrooms. R. A. Hamilton Electric has my highest recommendation. I am a very happy and satisfied homeowner."
Michael B on October 2023
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.
D.A. Baj Electrical, LLC, provides our customers with the best quality electrical work. We are here to build relationships with our customers and communities. D.A. Baj Electrical, LLC, works in an honest, efficient, and professional way. Our pledge is to create successful relationships by building trust, treating every project with the utmost integrity, and exceeding your expectations. We have experience with many commercial jobs, luxury homes, and over 300 residences! Come work with us for the best quality electrical work. We look forward to hearing from you!
"Great communication. Clean and very professional work. I had other contractors from different trades here at the same time and Baj Electrical really stood out as professional and respectful. The work was done as explained. I could not be more satisfied."
Tony M on January 2020
D.A. Baj Electrical, LLC, provides our customers with the best quality electrical work. We are here to build relationships with our customers and communities. D.A. Baj Electrical, LLC, works in an honest, efficient, and professional way. Our pledge is to create successful relationships by building trust, treating every project with the utmost integrity, and exceeding your expectations. We have experience with many commercial jobs, luxury homes, and over 300 residences! Come work with us for the best quality electrical work. We look forward to hearing from you!
"Great communication. Clean and very professional work. I had other contractors from different trades here at the same time and Baj Electrical really stood out as professional and respectful. The work was done as explained. I could not be more satisfied."
Tony M on January 2020
Stella Electric, Installs, troubleshoots and repairs all types of electrical items in Residential, Commercial and Industrial locations. I am Peter Stella and I have been doing electrical work in all capacities, Apprentice, Journeyman, Master Electricain and as a Senior Electrical Engineer for General Electric, American Power Conversion, Bechtel and Russelectric. I have been independently in business since 2001, have licenses in MA, NH and CA. Stella Electric has recently rebooted our operation and is waiting for you to call us
"Prompt response. Came that day."
Jim B on July 2023
Stella Electric, Installs, troubleshoots and repairs all types of electrical items in Residential, Commercial and Industrial locations. I am Peter Stella and I have been doing electrical work in all capacities, Apprentice, Journeyman, Master Electricain and as a Senior Electrical Engineer for General Electric, American Power Conversion, Bechtel and Russelectric. I have been independently in business since 2001, have licenses in MA, NH and CA. Stella Electric has recently rebooted our operation and is waiting for you to call us
"Prompt response. Came that day."
Jim B on July 2023
We are a professional service with many years of experience, but we have kept our family business values firmly at the forefront of our way of doing things. From the first time you speak with us, we will put you at ease and assure you of our care and skill with your electrical problem. We look forward to helping you.
"He's easy to get along with and does very neat."
Ed C on June 2018
We are a professional service with many years of experience, but we have kept our family business values firmly at the forefront of our way of doing things. From the first time you speak with us, we will put you at ease and assure you of our care and skill with your electrical problem. We look forward to helping you.
"He's easy to get along with and does very neat."
Ed C on June 2018
Advanced Energy Concepts was established in your community in 1990. Our main focus is energy conservation. Advanced Energy concepts also does a variety of plumbing services for your residential home
"Terrible customer service He created giant messes and lied to me on multiple occasions. I will say anything to get the project and not actually answer questions. When they came to give the quote, I asked them where they would put the heat pump and I said behind the house, but when they went to install it, it would not fit behind the house according to code. I constantly had to hound them to finish the job. They started in the spring, and then they did not finish until the winter, after saying they could start in 2 weeks. They left me without heat on below-freezing days because they were not finished. They did not honor parts of the contract. charged for service even though the contract says it is free for 3 years. They tried to charge me for things they did not install(humidifier). Installed the ventilation system over some sill rot. I left gaping holes in my home for months. I had to hound them every step of the way to get them to do the next part of the project. They were replacing propane and oil with gas and did not tell me I had to remove the propane to do so, and then the town would not permit their work and I had to pay out of pocket for more conversions. I had to hound them to get permits, including an oil tank removal permit, which they never pulled and I still do not have! The end result was an expensive system that I think is misconfigured and ill-fitting for my home (it does not remove humidity properly). If you would like to do the project management yourself, hire this company. That said, there was one very nice technician, but I would not have them install anything."
Allison B on July 2022
Advanced Energy Concepts was established in your community in 1990. Our main focus is energy conservation. Advanced Energy concepts also does a variety of plumbing services for your residential home
"Terrible customer service He created giant messes and lied to me on multiple occasions. I will say anything to get the project and not actually answer questions. When they came to give the quote, I asked them where they would put the heat pump and I said behind the house, but when they went to install it, it would not fit behind the house according to code. I constantly had to hound them to finish the job. They started in the spring, and then they did not finish until the winter, after saying they could start in 2 weeks. They left me without heat on below-freezing days because they were not finished. They did not honor parts of the contract. charged for service even though the contract says it is free for 3 years. They tried to charge me for things they did not install(humidifier). Installed the ventilation system over some sill rot. I left gaping holes in my home for months. I had to hound them every step of the way to get them to do the next part of the project. They were replacing propane and oil with gas and did not tell me I had to remove the propane to do so, and then the town would not permit their work and I had to pay out of pocket for more conversions. I had to hound them to get permits, including an oil tank removal permit, which they never pulled and I still do not have! The end result was an expensive system that I think is misconfigured and ill-fitting for my home (it does not remove humidity properly). If you would like to do the project management yourself, hire this company. That said, there was one very nice technician, but I would not have them install anything."
Allison B on July 2022
Generator repair services FAQs
Before hiring an electrician to work on a project in your home, verify their licensing, qualifications, and insurance. Check their official website, read customer reviews, and confirm their credentials with your local labor department. Ensure they hold liability insurance and have strong references. This thorough verification helps you receive reliable service and protects your home.
By bundling multiple electrical tasks, you can reduce overall costs by minimizing repeat service fees and consolidating labor charges into a single visit. By scheduling several repairs at once—like outlet replacements, light switch installations, and light fixture installations—you eliminate extra call-out costs and gain efficiency, securing better pricing without sacrificing quality.
Unless you're a licensed electrician, it's not safe to perform electrical work yourself. Handling electrical tasks without proper expertise poses serious risks like electric shock, fires, and structural damage. Professional electricians use specialized tools and follow strict codes to ensure the work is done safely and correctly, protecting your home and well-being.
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