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Top-Rated Tankless water heater installers in Plympton - Updated Nov 2026

Avatar for H L Bowman
H L Bowman
4.6(
430
)
Tankless Water Heater - Install

Serving Plympton, 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."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

461 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Cotti-Johnson Heating-Cooling-Plumbing-Electrical MA
Cotti-Johnson Heating-Cooling-Plumbing-Electrical MA
4.6(
231
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved (Corporate)

In business since 1944

Free estimates

Emergency services offered

"I appreciated being able to speak with someone in the office to explain my situation (leaking water heater), and having someone come to my home so quickly to go over my options for dealing with the problem. Dylan, Aaron and the entire crew were so professional and knowledgeable about the on-demand hot water system we chose to install. They were a pleasure to work with, and I would highly recommend them to friends in need of similar services."
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation

+56

Response time9 hrs
Response rate97%
83 neighbors recently requested a quote
Avatar for Keith Brothers Plumbing, Inc.
Keith Brothers Plumbing, Inc.
4.5(
122
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Showed up at promised time with all they needed to replace the water heater and completed the work in under an hour. Not my usual experience with plumbers. Price was the lowest of three I contacted."
Water Heater Replacement
Ball Valve install on Water Main
Sewer Main
Water Heater Replacement
Before & After - Tub to Shower

+4

Response time1 day
8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Comfort Professor
Comfort Professor
5.0(
24
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I cannot recommend these guys enough! I am not a patient person, when it comes to work on my house. They EXCEEDED my expectations! Their install was professional, well communicated, clean and efficient. Work was done while my twin babies were home, and they were incredibly accommodating. Their service people have been quick to reply to every question I have had after install was completed. I, honestly, will never have to shop around again - Comfort Professor will be my first and only call."
10 neighbors recently requested a quote
Avatar for Blue Bear Plumbing
Blue Bear Plumbing
4.7(
56
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2017

Free estimates

Emergency services offered

"Had oil heat system replaced to tankless, after converting to gas. Job was done perfectly, finally have unlimited hot water supply, and we have since used blue bear for other small plumbing jobs as they come up."
Boiler install
Heat Pump Install
57 neighbors recently requested a quote
Recommended by32%of homeowners
Avatar for Burke Plumbing & Heating, Inc.
Burke Plumbing & Heating, Inc.
4.0(
707
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"They installed a new hot water heater for me back in March. Nine months later, a part failed. Although the water heater was under warranty, Burke told me I would have to pay the labor but the manufacturer would reimburse me. The manufacturer refused and Burke Plumbing and Heating stepped and reimbursed the labor fee of $250.00! They are awesome and I would highly recommend them to anyone!"
Heating and Plumbing jobs
Heating and Plumbing jobs
Heating and Plumbing jobs
Heating and Plumbing jobs
Heating and Plumbing jobs

+19

Response time2 days
Response rate88%
136 neighbors recently requested a quote
Avatar for Dempsey Energy
Dempsey Energy
3.8(
17
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

Dempsey Energy is a family owned and operated full-service HVAC company located in North Attleborough. We feel your property is comprised of several systems to ensure comfort and convenience. However, just like any equipment, major heating and cooling systems will eventually require service to keep it working efficiently. If you live in North Attleborough, or anywhere in Massachusetts, count on Dempsey Energy for all your heating and cooling needs. With over 30 years of experience, our team is highly familiar with the common nuisances and solutions to get your major systems running efficiently again. Call today to schedule an appointment, as we're anxiously awaiting your next project and looking forward to keeping you comfortable all year round!

Gallery
Gallery
21 neighbors recently requested a quote
Recommended by41%of homeowners
Avatar for Full Swing Plumbing, Heating & Air
Full Swing Plumbing, Heating & Air
4.2(
5
)
Tankless Water Heater - Install

Serving Plympton, MA and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

Since 2015, Full Swing Plumbing, Heating & Air has been delivering Grand Slam Service and Big League Comfort to homes and businesses across Greater Boston. Born from a commitment to reliability, skill, and trust, we’ve built a reputation as the comfort champs our community can always count on.\n\nFrom routine tune-ups to emergency calls to full-scale installations, our team steps up to the plate every time with the expertise and hustle it takes to keep your space running smoothly. No surprises, no shortcuts—just straight talk, fair pricing, and work done right.\n\nAt Full Swing, we believe every customer deserves a home-field advantage when it comes to comfort. That’s why we bring the same energy, precision, and passion to every job, making sure you never have to sit on the bench when it comes to plumbing, heating, or cooling.\n\nFull Swing Plumbing, Heating & Air—Grand Slam Service. Big League Comfort.

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Photos

+100

Response time8 hrs
Response rate100%
2 neighbors recently requested a quote
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