Get matched with top boiler installation pros in Assonet, MA

"Dylan did a phenomenal job installing a new boiler as well as diagnosing an issue with another boiler. Highly recommend."

"Nicholas Gouveia was outstanding. He thoroughly checked my furnace boiler and found nothing wrong. This saved me thousands of dollars for a replacement that my previous technician (not hired through Angi) said I needed. I will be hiring Nich"

"J.T. came to evaluate installation of an over-the-range microwave. He was very thorough and explained everything so I could understand the complexities of the installation. Very friendly and competent!"

"I called Nick, on a hunch from wife, and he showed up as planned, and even offered to do the work right then. I bought a faucet for him to install, but it wasnâ  t the right size, but Nick had one on his truck that looked good and he installed it right then. We had another problem with the faucet in the kitchen, that was leaking, and I purchased some time ago from Home Depot, he couldnâ  t repair it do to some inferior parts on that faucet, so I purchased another faucet from Nick, and had that installed, as well. Job was completed and he takes pride in his work, cleaned up and went on his way! Now thatâ  s how a job should be done, on time, neat, and professional from beginning to end, Would recommend him to anyone. Thatâ  s my new plumber , For Sure !"

"Jordan did a great job installing a hot water heater in my condo. I was able to him photos of the existing setup and the worn out boiler. So that helped to speed up the process. The following day Jordan was back with a helper and they were finished in a little over two hours. And the best thing....Jordan pricing was very fair."

"Friendly, trustworthy people came to my home. I have had them exclusively taking care of my boiler, furnace and air conditioning unit for many years. They make themselves available and answer all calls promptly. I enjoy it went they come because they are friendly people."

Welcome!\n\nAt JN Service HVAC & Plumbing, we’re proud to deliver licensed, insured, and trusted HVAC and plumbing solutions to homes and businesses across Massachusetts.\n\nWith a solid reputation built on Excellence, Commitment, and Responsibility, we help you prepare your home or commercial space for the season ahead — before winter problems strike.\nOur priority is your comfort at home.\n\nWhy Choose Us?\n- 5-star Rated Company: We are a 5-star rated company with more than 1200 satisfied clients.\n- Customer Success: We focus on long-term relationships.\n- Specialist: Expert knowledge and proven skills.\n- Licensed and Insured: Our services are fully insured, providing you with peace of mind.\n- Quality in Everything we do: Best service with the best products.\n- Double-year warranty on labor.\n- Emergency Service: We're ON 24/7 to ensure your well-being.

"Everyone I spoke to at Cotti-Johnson from the estimate through to installation of my generator were polite, professional and a pleasure to deal with. At the outset, the scope of the project and its cost was explained to me in simple and understandable language. The installation took place precisely on schedule and was completed within 3 hours. I received the necessary follow-up calls from the office to ensure the work was done to my satisfaction. I couldn't be happier with Cotti-Johnson."

"Burke was able to come out within 2 days to do routine service on my boiler. He also bled all the lines. Very pleasant and communicative!"

"Amazing experience all around. Easy to schedule and to work with, good deal and amazing work installing a tankless water heater. I will definitely call for any future needs."