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Top-Rated Tankless water heater repair pros in Winthrop - Updated Nov 2026

Avatar for Gentille Plumbing and Heating
Gentille Plumbing and Heating
5.0(
28
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Credit card accepted

"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."
Response time6 hrs
Response rate96%
25 neighbors recently requested a quote
Avatar for H L Bowman
H L Bowman
4.6(
430
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"They were very fast to respond to my call and were able to send someone within two hours. The replacement of the hot water heater went well. For the water pipes they use copper crimp fittings instead of soldering so it will be interesting to see how that holds up over the years. My only concern is how they ran the gas line. They use Gastite CSST which is fine, but the CSST is run so it goes downward then back up and then downward again before it enters black pipe that has a moisture trap. It seems to me that if there is any moisture it will end up in the CSST instead of the trap. In addition, there is a pretty good bend in the CSST right before it goes into the trap section. Also, Teflon tape was used on the all the joints instead of joint compound. I think I will get someone from a different company to come in and take a look at it."
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+6

469 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,404
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Live Your Most Comfortable Life with a Company You Trust. \nWe offer Same Day Service and Next Day Installation! \n \nSila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it?s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe ? season after season. \nWe guarantee satisfaction and are proud to have earned over 7,000 ?A? ratings on Angie?s List and its prestigious Super Service Award!

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+6

67 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Johnny Rocket Plumbing & Heating
Johnny Rocket Plumbing & Heating
5.0(
8
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"John from Johnny Rocket Plumbing and Heating did an excellent job installing our water heater. The work was clean, efficient, and done right the first time. He explained everything clearly, showed up on time, and left the space spotless. I fully trust his work and would recommend him to anyone looking for a reliable plumber. Thank you!"
My jobs
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+10

Boston Standard Company
4.3(
431
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"Finally a great company you can rely on to get the job done! I have used them for my multi-family home for years and have always been so happy to have this wonderful team of people to help me out. From Joanie in the office to all the great plumbers, Brandon, TJ, Kyle, Jorge to name a few they are all so professional, friendly and knowledgeable. They are easy to work with, they call you 1/2 hour prior to arrival, cover their boots when they are in your home and have a low monthly charge for their service plan, which is worth every penny. Brandon has been out the most and he is a wealth of knowledge. He had so many issues to figure out this go around and he found all the issues in a methodical way. He's straight up trustworthy too. One leak was from the tenants toilet and needed a new flange and was pulled and set, and an old cast iron pipe cut and replaced with new pvc drain line. Another leak was from an old laundry valve which left a lot of water in the basement who knew?! An old shower valve was causing the rattle and was replaced. Lastly the for the other toilet problem, he suggested I buy a toilet and he would install it saving me hundreds of dollars! He even gave me the brands that he liked for toilets. Brandon even checked my furnace, gave me some suggestions and gave me a quote on the water heaters that are close to replacement. It was like having a family member checking to make sure everything was okay in the house! Thank you to Boston Standard for all the hard work!"
Recommended by85%of homeowners
Avatar for NETR Inc
NETR Inc
4.7(
78
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"I bought my unit from NETR in 2018. It worked fine until we discovered it wasn't blowing any cold air. I made the big mistake of hiring someone a family friend recommended and they diagnosed it incorrectly and then basically disappeared on me. Anyway, it took a few weeks but they repaired it today and I was impressed with their courtesy and getting the job done very quickly and successfully. I felt like I was being dealt with honestly. Thanks, Jared and Jack. I should mention I paid about $300 for the refrigerant today. I don't know what the final cost will be but probably a bit over $1000."
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
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+9

3 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,405
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"I've called Sila before to work on my HVAC unit and realized they offer plumbing services when my tank-less water heater stopped working. They were able to come by that day I called to see what was wrong. Once they were onsite they deterimed my hot water valve stopped working and were able to replace it and got my hot water working in no time."
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+6

Response time2 days
Response rate100%
7 neighbors recently requested a quote
Avatar for Dynamic Plumbing Heating & Gas Fitting
Dynamic Plumbing Heating & Gas Fitting
4.8(
34
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

In business since 2012

Emergency services offered

"My experience with Angel and his crew was great. From the initial phone conversation to the end of the project, Angel was always professional, punctual, and clear in what he was going to do. He patiently explained isues he discovered with the existing piping and tankless water heater, and provided various options as well as recommendations. He completed the work in a timely fashion and left no debris behind. I am very satisfied with the experience and would definitely recommend Dynamic Plumbing to others.

"
RINNAI TANK LESS
RINNAI TANK LESS
BATHROOM REMODEL
Work
Work

+22

Recommended by96%of homeowners
Avatar for All Phases Mechanical
All Phases Mechanical
4.5(
75
)
Tankless Water Heater - Repair

Serving Winthrop, MA and surrounding areas

In business since 1983

Free estimates

Emergency services offered

"Our experience with All Phases Mechanical has been excellent. On the first occasion we used APM, we lost heat during a cold snap in the middle of winter. We called in the morning and a technician arrived that afternoon and quickly determined that not only was our 20 year old furnace in need of expensive repairs (which a friend of ours in the construction industry validated), but continuing to run it would potentially result in a carbon monoxide hazard to my family. Carl gave us clear options and helped us understand benefits (rebates, no interest loans, etc.) that are available from the state to assist families in our predicament. We decided to move forward with a new furnace and Carl's team installed it the next day. On the second occasion, APM helped us our central air conditioning system. Again, Carl sent a technician who arrived promptly the same day, who determined that the air conditioning system was fine but it wasn't working properly due to faulty wiring. He quickly fixed it and was on his way - all at no charge. I can't say enough about All Phases Mechanical. If you're looking for a local company that cares about its customers (and understands that heating and cooking problems need to be addressed quickly), All Phase Mechanical is the company you should use."
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+6

Recommended by90%of homeowners
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