Get matched with top boiler installation pros in Walpole, MA

"John G. did an excellent job evaluating the functioning of our boiler and performing annual maintenance for it. It was his second time taking care of the boiler for us. He quickly answered the minor questions that I had, and he advised what would be cost-effective in addressing the issues that I raised. In both the instances in which John G. has serviced our heating system, I found him to be knowledgeable, courteous, and focused on saving us money, whether on heating costs or future upgrades."

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

"JT called and asked if he could come earlier than expected, which was perfect for me. He was extremely thorough reviewing our electrical system and the finished product of the work he did (installing a new 220v line for an outdoor hot tub) was clean and efficient. He was a joy to meet and speak to, incredibly nice guy. Price was reasonable for the work. I would 100% recommend JT and Cotti-Johnson again!"

"The whole process went very well... from the initial consultation until the installation. Installing the system only took one day and it works great. After a bit of research, the price is probably a bit on the high side but I'd rather do that and get the job done right. Recommended."

"The thermocouple on my gas-fired boiler needed to be replaced, and the pilot needed to be cleaned. The tech was helpful and forthcoming with information. Took about an hour, as my boiler does not have easy access. Would hire again!"

"I originally called the company that did my regular maintenance less than a year ago. They told me they couldn't send someone out for 3 days! This in the middle of a cold snap. When I called Rodenhiser, they were able to send someone the next day. While they were not able to completely fix the problem right away - a part was needed - they were able to restore heat while we waited for the part. They came back in a few days and repaired the boiler zone controller."

"Michael is hands down the best I’ve ever worked with. He’s exactly who you wish the folks working on your home are like. He has an amazing attention to detail, meticulous, and puts safety above all else. When he realized my boiler couldn’t be put in just yet because of further water damage, he had a water remediation company come in TWO hours to instantly start the process. When he realized my hoses needed updating, he made sure to call it to my attention and had them switched out. For work outside of his scope, he still makes sure to let you know what’s the best for future proofing your home. Above all, he’s communicative, on time, honest, and always there when I have a question. Plus, you can tell he really cares about his craft, and that translates to the job. He chooses the best solution for your situation. My only complaint is I wish he did literally everything else outside of plumbing! I’d want a Michael version of a carpenter, electrician, every day handyman. He‘s that good!"

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.

"Tim P, Generator Advisor, visited our house and gave on the spot estimatesâ ¦..he was GREAT. Licensed Electrician who knew his business and was easy to speak with. Timely communications and responses to text messages! Tim was helpful answering questions after the generator was installed. We talked to 5 Generac dealers and a Kohler dealer. Cotti-Johnson had the best pricing in the South Shore area. We highly recommend this company. If you are thinking about buying a standby generator, Cotti Johnson is the company to callâ ¦..Art V"

"The whole process was pleasant and professional, from the initial meeting (with the owner) to the completion of finished project. I had a high efficiency combo furnace/hot water heater installed. All my questions were answered through out the process. Installation Techs were courteous and worked around my schedule. Excellent work done, true tradesmen, very clean trade-craft. They replaced all the old piping in the furnace room and really cleaned it up in there. In terms of value, I certainly feel as though I received the best bang for my buck. Overall, a very positive experience."