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

Avatar for Atlantic Water Heater Pros
Atlantic Water Heater Pros
4.8(
51
)
Tankless Water Heater - Install

Serving Bethany, CT and surrounding areas

Approved

In business since 1998

Free estimates

Emergency services offered

"Bruce and Bill of Williams and Associates Mechanical Contracting recently removed and replaced my 18 year old oil fired boiler and added an indirect fired water heater. I had been saving for this project for over a year and had been geeking out in my avid research (Thanks Internet!) of products available, reviews and costs, as well as the reputation and reliability of local heating and plumbing contractors. I knew what I wanted, I just needed to stay within my budget and find a contractor I could trust. It is therefore, my pleasure to let others know, on the same web review sites that I referred to, how overwhelming pleased I am to have worked with Bruce Williams and his team. They skillfully removed and installed the heating system in a day, took pride in their work and took the time to explain the new system and to fully answer all my questions. Bruce and Bill clearly like what they do for a living, have great people skills and work very well together. I was able to get the very best of products and still come well under budget. I cannot thank these guys enough! Honest, Professional and Reliable! My dusty, unfinished basement with my new Viessmann boiler, Carlin burner and HTP indirect fired water heater is now my favorite part of the house!"
Large Mechanical Room
Response time1 day
1 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for H L Bowman
H L Bowman
4.6(
430
)
Tankless Water Heater - Install

Serving Bethany, CT 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

459 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for N & J Plumbing LLC
N & J Plumbing LLC
4.5(
47
)
Tankless Water Heater - Install

Serving Bethany, CT and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

We pride ourselves on our extreme professionalism and attention to detail. Our customer satisfaction guarantee assures you that we won't leave your property until you are completely satisfied with our work. As a locally owned and operated business you can trust that we will treat your home as we would treat our own. Give us a call today, and we look forward to working with you!

Additional Photos
3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Jefferson Plumbing
Jefferson Plumbing
4.9(
19
)
Tankless Water Heater - Install

Serving Bethany, CT and surrounding areas

Approved

In business since 2004

Emergency services offered

Warranties offered

"I was so happy with the quality of work and prompt response to my water heater issue. They installed a tankless water heater to replace my old standard tank. Very pleased! I would recommend highly. Ed Jefferson was terrific."
Steam Boiler
Boiler
Side by Side New Boilers
Steam Boiler
All New Piping and Electrical Installed

+35

Response time6 hrs
Response rate92%
Recommended by100%of homeowners
Avatar for InstaPlumbing, LLC
InstaPlumbing, LLC
4.6(
229
)
Tankless Water Heater - Install

Serving Bethany, CT and surrounding areas

Approved

In business since 2014

Emergency services offered

Warranties offered

"Plumber was very knowledgeable and professional. He found the problem and fixed it right away. I also had other issues going on that he was able to address. I highly recommend this company"
 Dryer Vent Inspection
 Faucet Repair and Installation
 Shower valve repair
 Large and Small Drain Snaking
Apprentice Dylan

+1

Response time9 hrs
26 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Chickos Home Comfort
Chickos Home Comfort
5.0(
5
)
Tankless Water Heater - Install

Serving Bethany, CT and surrounding areas

Approved

In business since 2025

Credit card accepted

Offers commercial services

Chickos Home Comfort has become a staple of professionalism and quality work in Fairfield & New Haven area for years. With over 20 years experience, there is no job too large or small for our crew. Call today to schedule an appointment!

Chickos Home Comfort
6 neighbors recently requested a quote
Avatar for Rooterman Hartford LLC
Rooterman Hartford LLC
4.0(
68
)
Tankless Water Heater - Install

Serving Bethany, CT and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"The two men arrived on time, were courteous and expedient. They replaced my faucet and showed/explained what they had done before leaving. Shortly thereafter, I am experiencing a leak in my basement which may/may not be related to the project. If it continues, I will call them out to investigate the issue."
HVAC
250 neighbors recently requested a quote
Recommended by78%of homeowners
Showing 1-10 of 48

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