Serving Boston, MA and surrounding areas
Approved (Corporate)
In business since 1989
Free estimates
Emergency services offered
"NETR always provides top notch service and knowledge. I have used them for both installation of a mini split as well as ongoing maintenance and service. Highly recommend them."
+9
Serving Boston, MA and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 1948
Free estimates
Emergency services offered
"Daniel and team was very professional, knowledgeable and personable. I had a smart switch issue with multiple poles and they were able to solve the problem and make the right connections. Additionally, they identified a faulty breaker and replaced easily. Any other services they recommended as part of the whole house safety assessment, they did not push for anything and was very clear on the optionality and overall value if I wanted to pursue. I ended up electing a whole house surge protector as it was something I was considering and their service made it an easy decision to move forward with it. Overall, I had done a great deal of research and very glad I went with Cotti-Johnson."
+62
Serving Boston, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Emergency services offered
"WE had two gens installed and Jason has done a lot of other work for us as well. He is highly ethical, clear with what should or should not be done and is exceptional at his craft."
+19
Serving Boston, MA and surrounding areas
Approved
In business since 1992
Emergency services offered
Warranties offered
"The people who came to install my AC were extremely friendly and took the time to make sure I fully understood the unit and all of its components. They also showed up on time."
+34
Serving Boston, MA and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"Daniel Provost was great! He got back to us right away & was very accommodating to schedule. Daniel was professional and personable. He explained things to us quite clearly. His honesty and reasonable price make Daniel someone I would absolutely recommend."
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