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

"Received excellent service on a Saturday morning for an emergency hot water heater replacement. Mike responded immediately upon sending the request. Work began quickly within 90 minutes! Quality work and reasonable cost. We are very pleased on all counts!"

"SILA called to offer their annual heating inspection services given that I was a prior customer. The gentlemen they sent, Ivan, was very knowledgeable and thorough. He went over and above, and spent a lot of time explaining the parts of my boiler to me and likely failure points, gave some recommendations on my aging indirect water tank, and even answered a few questions I had regarding thermostat wiring. He was very patient, and left everything clean and exactly the same was as he had found it. He wore a mask, covered his shoes, and was very respectful. I've used SILA for my annual inspection every year the past five or so years."

"We decided not to go tankless but E&R did a great job installing a new 50 gal Rheem heater. Very quick and clean install. I will use them again in the future."

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

"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."

"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."

"They returned my call early on a Sunday morning within minutes of the request through HomeAdvisor. Our hot water heater was repaired in a few hours (also on a Sunday)."

First String Plumbing, Heating & Cooling is built on over four decades of hands-on, master-level experience paired with modern equipment, straightforward pricing and a commitment to serving our neighbors near and far.\n\nWe believe every homeowner in Connecticut and New York deserves a team they can count on whenever they need help. When the lights are at their brightest and all eyes are on us, we will always do what is right and that commitment never fades.

"They were readily available for an emergency we had regarding pipes and water leak. Very professional, reassuring and fixed the problem in one day! Would definitely rehire!"

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We specialize in plumbing and provide unmatched customer service! You will find us paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!\n