Get matched with top tankless water heater repair pros in Greenwich, CT

"Fantastic experience. Mike called immediately, didn't push at all, demystified what had happened with the water heater and did a great job very fast. I couldn't be happier and will be using his company again soon."

"It went very well! Doug was on time, friendly and professional. He found a problem which we will have repaired soon."

"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."

"Came early and removed and installed a new water heater within 90 minutes"

"Matt was great. Very responsive, professional and efficient. Installed a new hot water heater for us is no time. And a very fair price!"

"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."

"Aldo replied my request in no time and came very quickly. He fixed the issue very well. I highly recommend Aldo for plumbing repair."

"I had an issue with my stream boiler last Saturday. Did a google search and called multiple companies except Lighthouse (also part of Premier HVAC) picked up the phone right away and the tech Slava (unsure if I spelled his name correctly) showed up an hour after my call. He was very knowledgeable. He first did a thorough inspection on my streamer boiler (I thought mine was called furnace but he corrected me and luckily Lighthouse also repair stream boiler), then giving options (replace the water feeder and side glass or the whole stream boiler since mine was already past 30years and it may not last long). Due to budget issue, after discussed with my family, we chose for now just changed the parts. Slava has no problem with that and I got lucky that he was about to arrange time to have the work done the same day. Slava is also very patient and professional. As he learned that I am new to streamer boiler, while he was doing his work, at the same time, he was giving “a lecture “ in terms of names, functions of each parts and the concept of how the stream boiler works and how to maintain it properly. I gotta be honest that I don’t recall all the he mentioned but at least now I have a concept. In terms of the price, I can’t say that it’s cheap but you pay for the quality of service that you get. Slava literally taking his time and spent about 4 hours to repair. Highly recommend."

"Called because heating system would not start up.  The company came a short time later and found out the problem was a simple fix which involved adjusting the angle of a waterline.  I highly recommend because the service was great and I had a very good overall vibe throughout the whole process.
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"The firm responded immediately to my inquiry and arrived at the scheduled appointment date, assessed the necessary repair, went to the closest plumbing supply house and obtained the necessary materials and returned promptly that day to make the corrections. The crew was courteous and professional."