Get matched with top tankless water heater installers in Blackstone, MA

"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."

"Chris was very professional, courteous and reasonably priced. He replaced the pop-up assembly in my sink (though I didn't know what the issue was, as there was water leaking). I would recommend him highly!"

We specialize in all phases of heating, cooling and plumbing services-- installs, repairs, maintenance, and more! We guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Check out all the services we offer below and call -or- click to schedule a free estimate today!

"Removed and disposed of old cast iron baseboard in kitchen (to make way for sliding patio doors) then supplied and installed copper piping & fittings to re-connect remaining baseboard. Chris and team always do a good clean job and I like the ease of doing business."

"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."

"They were very fast and professional. Got my water heater working on a weekend"

"Could not be happier with the install of our new propane system. They were very easy to work with Quinn answered all my questions Doug and Bernie and I forget the other guys name were a pleasure to have in my house. They did the work and the Quoted amount of time. They handled all the inspections and permits with the town. Extremely happy with the level of service and would recommend to anybody looking for heating needs. Edit from 2 years ago?. The company still has not picked up old water heater and boiler. Have called a number of times to get this done. Vicki is extremely unpleasant to deal with. Rude. Has zero phone skills. Should really look into finding a new person to answer the phones. She was basically yelling at me for asking, follow up questions. And when I I said, why are you yelling? She said so you would know if I was yelling at you. But she definitely was yelling. I really hope those phone calls are recorded. They?ve got their money. So obviously the customer service ha"

"Service people are excellent in their profession in what they do. Just under 2 1/2 hours they taken the old water tank out and replaced with the new water tank with new copper pipe connections."

"Bathroom redo came out beautiful. They are very professional and relate very well to customers needs. I would recommend them from a small task to a full bathroom reno. Plan on installing a half bath in my basement next!"

"First of all I requested quotes from 3 different plumbers to replace a water heater and install a pressure reducing valve. Todd was very professional, honest and very reasonable priced. He did an excellent job and went above and beyond my expectations. He will be my go to from now on. I HIGHLY recommend him to anybody looking for quality work at a great price."