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

Avatar for Mouradian Plumbing & Heating
Mouradian Plumbing & Heating
4.7(
19
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved

In business since 2000

Free estimates

Emergency services offered

"I first called Mouradian Plumbing when I saw a puddle under my water heater.  Eric came out the same day to diagnose the problem and offered me multiple options.  Rather than replace the hot water tank, Eric upgraded the system to a high efficiency tankless system.  Not only was the installation meticulous, but he cleaned up everything.  Eric also informed me of multiple rebates and tax incentives.  I have since used Mouradian Plumbing for a boiler and a kitchen and bathroom renovation with equally impressive results.  With all this attention to detail, it?s hard to believe that his prices were more than 30% lower than
every other estimate I received.  We couldn't be happier.
"
Response time1 day
Recommended by100%of homeowners
Avatar for Genove Oil & Air Co
Genove Oil & Air Co
4.7(
217
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"We were very pleased with the work that the Genove technicians did. They removed our 40-year-old gas boiler and associated water heater and replaced it with a new system. They tested the new system carefully, put explanatory tags on all of the relevant pipes and faucets, and cleaned up well. The team members were polite and worked hard. We had similarly good experiences when Genove technicians came to repair our central AC system. They were knowledgeable and efficient, got the system going again, and the price was fair. We continue to use this company for heating and AC repairs."
Additional Photos
Additional Photos
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Pics
Pics

+2

Response time12 hrs
Response rate100%
10 neighbors recently requested a quote
Avatar for Heavy Doody Plumbing & Heating
Heavy Doody Plumbing & Heating
4.9(
22
)
Tankless Water Heater - Repair

Serving Carlisle, 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
6 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for MillTown Plumbing, Heating, Cooling and Electrical - Plumbing
MillTown Plumbing, Heating, Cooling and Electrical - Plumbing
4.3(
427
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved

In business since 1979

Warranties offered

Small jobs welcome

"The technician and electrician were both very respectful, knowledgeable, provided all options, were open and honest about why they recommend the service chosen, helped in obtaining the financial services, walked me through the entire process. The technician went above and beyond making sure the. After the water heater install was completed he performed a safety inspection on my heating system, cleaned the debris from the flute into the chimney, made a few tweaks here and there to make sure my system was performed to his satisfaction. I was extremely appreciative of his care, concern and professionalism."
Team Photos
Team Photos
Team Photos
Water Heater Service
Water Heater Service

+4

Response time3 days
Recommended by88%of homeowners
Avatar for Rodenhiser Home Services
Rodenhiser Home Services
4.4(
522
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved

In business since 1928

Emergency services offered

Warranties offered

"I couldn't recommend these guys more. We had a 21-year old boiler replaced and upgraded, and a new hot water tank installed. I can't think of a single way they could have improved the whole process. From start to finish, they were knowledgeable, on time, clean, considerate, extremely professional and they did exactly what they said they would. The also installed a temporary hot water tank and left electric space heaters on the one night the burner was out of service. Everything is now working as they said it would, and a big bonus is their workmanship actually LOOKS great too! A+++"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
28 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Borels Plumber Inc
Borels Plumber Inc
5.0(
12
)
Tankless Water Heater - Repair

Serving Carlisle, 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 Opus Plumbing and Heating
Opus Plumbing and Heating
5.0(
7
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Family-run with over 20 years of hands-on experience, Opus Plumbing & Heating delivers full-service residential plumbing, water heater installation, boiler service, and heating system repair to homeowners across North Billerica, Billerica, Stoneham, Winchester, Woburn, and Lexington, MA.\n\nFrom routine plumbing repairs to complete heating system installations, we provide comprehensive solutions to keep your home comfortable and running smoothly. Contact us today for a free, no-obligation quote. We are here to help with any plumbing or heating need, big or small.

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23 neighbors recently requested a quote
Avatar for Landry Mechanical, Inc.- Plumbing
Landry Mechanical, Inc.- Plumbing
4.5(
116
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved

In business since 2008

Emergency services offered

Warranties offered

"Ray I wanted to let you know what a great experience I had with the Heater Install on Esther Street in Worcester, MA Your team showed up on time and were very polite and very diligent! They started by protecting the floors and carpets by laying down blankets. Several times they needed to review things with me and each and every time they were polite and very professional! They worked hard and even though I had to open up the wall so they could chase a pipe they continued to work on the retrofitting the gas portion of the project while I cut into the wall. After the was chase was cut into they ran the pipe and all was good. They even finished early having to wait for the plumbing inspector to arrive. I wish I could find contractors of your caliber in all the trades I deal with! Landry Mechanical is always my first choice from now on! Thank you Bob"
Ductless Install
Various photos
Various photos
Various photos
Various photos

+55

Response time3 days
246 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Heritage Home Service
Heritage Home Service
4.1(
1,316
)
Tankless Water Heater - Repair

Serving Carlisle, MA and surrounding areas

Approved (Corporate)

In business since 1988

Free estimates

Emergency services offered

"Angel was exceptional, professional, efficient, clean and responsive to every request, fixed numerous issues related to my toilets, noticed a flooring issue that we are now addressing and diagnosed a water heater issue that had been attributed falsely to a foundation issue saving us thousands. They are expensive compared to many but worth every penny we spent."
Career fair
Team breakfast
Festivals and events
Golf tournament
Heritage Helps initiatives

+27

Recommended by91%of homeowners
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