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

Avatar for Christopher Viscarello Plumbing
Christopher Viscarello Plumbing
4.5(
72
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"I called Viscarello Plumbing and Heating when I had a leaking water heater. Chris looked at the job and recommended a very efficient tankless water heater. I decided to make the investment. Chris and crew installed my tankless. Now, showers never run cold-hot water on demand. I use less water- warms water up so much quicker in my 110y/o house. In July, with tankless system running sinks, shower and washer, my gas bill was $20! I also really like the way the tankless was mounted on the wall. We gained more space without the old water heater in the way. Best of all- nice neat work, no leaks and no mess. Since then, Viscarello Plumbing has plumbed my new kitchen, laundry room, replaced old pipes and replaced radiator valves. Rates are average-but work is above average."
High efficient boiler
High efficient boiler
High efficient boiler
High efficient boiler
High efficient tankless

+21

1 neighbors recently requested a quote
Recommended by88%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 South Hamilton, 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!

Additional Photos
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+6

58 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Comfort Professor
Comfort Professor
5.0(
24
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Steven showed up and was able to repair our AC after two years of multiple repair companies that could not help. Everyone else said we had to replace when Steven was able to determine that it just needed a quick repair. He was professional and so pleasant. English is not our first language but he was so patient with us. Highly recommend!"
10 neighbors recently requested a quote
Avatar for Morris Heating & Air Conditioning
Morris Heating & Air Conditioning
4.8(
81
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Justin and Cam, the technicians, did a great job. We have an old farmhouse with a very strange configuration of partial crawlspace and partial full basement, and water was leaking through the fieldstone foundation wall from the crawlspace. They quickly diagnosed that the problem was coming from 1 or 2 zones of the hot water radiator heating system, and they were able to shut off those zones to stop the leak, while allowing the house to still use water for sinks, toilets, and showers. We'll have to do more work later to replace pipes to the radiator but, because they are hard to access, we need to plan ahead for some construction work. I'm fully satisfied that these guys were able to find the problem and give us even a temporary solution that allows us to have our working plumbing again without the basement getting wet. Would definitely work with them again."
Additional Photos
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+8

4 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Heavy Doody Plumbing & Heating
Heavy Doody Plumbing & Heating
4.9(
22
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved

In business since 2013

Emergency services offered

Small jobs welcome

"I had an incredible experience. My water heater was leaking and ready to let go. Brian had contacted me. He set up an appointment the next morning. The two gentleman ( plumbers ) came in. Removed the old water heater. Installed the New water heater. And updated the vent piping because it was old and out of code. They did a wonderful job. And I cannot speak highly enough of them , the speedy work and their professionalism. I now have a new plumber for all my plumbing needs. Thank you."
back flow  for sprinkler sytym
2nd meter install
finish
finish
finish

+26

Response time4 hrs
8 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Borels Plumber Inc
Borels Plumber Inc
5.0(
11
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"These guys are great. Water heater broke and was leaking all over the cellar. They replaced my water heater and had everything done within a couple of hours. Highly recommend them and I will definitely use them again."
Water heater replacement
Water heater replacement
Bathroom remodeling
Bathroom remodeling
Kitchen remodeling

+4

Response time2 hrs
Response rate100%
Avatar for Maffei Plumbing and HVAC, LLC
Maffei Plumbing and HVAC, LLC
3.8(
12
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

At Maffei Plumbing and HVAC, LLC, we are committed to your comfort. With an experienced and qualified staff to provide quick service for any service needed. We can solve any problem with a friendly face. Give us a call for a free estimate.

Air Conditioning Installation
Rinnai Tankless
Water Filtration
Heating Systems
Heating Systems

+6

Response time1 day
62 neighbors recently requested a quote
Recommended by12%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.1(
1,316
)
Tankless Water Heater - Repair

Serving South Hamilton, MA and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"I asked for a rep to come to give quotes for repair or replacement of my gas boiler. Before he came the old boiler failed, and Heritage was able to quickly install a new one so that we without heat and hot water for only a short time."
Career fair
Team breakfast
Festivals and events
Golf tournament
Heritage Helps initiatives

+27

Recommended by91%of homeowners
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