Get matched with top tankless water heater repair pros in Marshfield Hills, MA

"He called us early morning and by early afternoon we had a new hot water heater. Very professional. I would recommend to all."

"This was a relatively small water heater repair, and Ryan did an outstanding job. He responded immediately to my request, provided a reasonable quote, was polite, professional, knowledgable, and friendly to deal with. Will definitely hire again if needed."

"Guy did a great job of diagnosing and repairing our State Hybrid Electric water heater. I would definitely recommend his work."

"CMK was very professional from start to finish. They showed up on time and very quickly repaired my burst pipe. I will definitely be using them again for any of my plumbing needs."

"Replaced a tank water heater, the door was too narrow so first pitched removing framing with no guarantee that it’d be replaced correctly. I suggested using a smaller sized unit based on a quote from another plumber which is the route we went. They also covered the overage for the additional cost of the smaller sized unit which was nice but if I wasn’t aware of the option I’m not sure what I would have done. They also only sent one person initially so I helped bring the old unit down and the new one up in between trying to work. Also the breaker to the hot water heater was never flipped back so I’m waiting to see how the unit performs now."

"The plumber arrived in the allotted time frame which was terrific as we had a significant storm with trees down & power outage.He assessed the situation developed a plan and secured a water heater & replaced my old one. Very kindly alerted me to another issue that was going on in the basement. I would recommend Matt with out hesitation. Thank you for your seedy response.Katherine Kelliher"

"In April 2026, our broken cast iron pipe needed to be replaced, but we didn’t know how extensive the repair would be. From Angi's referrals, we called Full Swing Plumbing who arranged for Nick, one of their plumbers, to come to our house that same afternoon. Full Swing waived the dispatch fee. Nick used his endoscope camera to see the extent of the problem. (They had a coupon on their site which offered this one-time, free service.) After a couple hours, they were able to identify the problem, present a few solutions, as well as a final estimate before they left that day. We agreed on the approach and set a date for the following week. Nick and his co-worker were friendly, deeply knowledgeable, and hard-working. They communicated well, taking photos for us throughout the process. They cleaned up everywhere, completed the job in one day, and they kept to their price. Everything worked well from the single visit."

"My gas water heater was leaking and starting to get a bit old... so I needed a replacement. Boston Standard gave me an estimate after emailing them a few photos of my existing setup, and came out to replace it the next morning. Their estimate came in lower than another company I looked at by a fair amount. They also gave me a discount on a scratched water heater they had on hand that another customer rejected. The were prompt, professional, and got the job done quickly. I will absolutely hire them again for my plumbing needs."

"The water heater replacement went really well but they haven’t called me when I wanted more services.  They went above and beyond to make it elevated in case my basement flooded again.  Two or three people came out."

"Prompt, knowledgeable, professional. J.R. Answered all questions I had about the tankless water heater before he replaced it. Knowing he stocks the parts for the unit is a comfort. I called through home advisor and he replied immediately, he came by house to give an estimate the next day, promised start date- (he got to start my house earlier than planned while juggling another job)-he then worked on my water heater until it was finished - I was able to have heat and hot water earlier than promised so I was very grateful."