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

"What a great experience! I needed a water heater replaced ASAP, and Mike and his team replaced the heater quickly, with no issues, and at less than half the price of the next lowest bid. I'd highly recommend Mike's Plumbing."

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

"Replaced a tank water heater, the door was too narrow so first pitched removing framing with no guarantee that it’d be replaced correctly. I suggested using a smaller sized unit based on a quote from another plumber which is the route we went. They also covered the overage for the additional cost of the smaller sized unit which was nice but if I wasn’t aware of the option I’m not sure what I would have done. They also only sent one person initially so I helped bring the old unit down and the new one up in between trying to work. Also the breaker to the hot water heater was never flipped back so I’m waiting to see how the unit performs now."

"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 incredibly easy to work with. Punctual, fairly priced, flexible, and responsive at any time of day, we hit a homer in by hiring Matt to run gas lines to our new pool heater. Having worked with numerous plumbers over the years, Matt will be getting all of our business moving forward. HIGHLY recommend."

"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."

"Affordable HVAC repair service. You can actually ask them to do little extras at no additional cost. After I called them for emergency repair of our AC unit, they offered a complementary cleaning for the unit. Amazing customer appreciation. Totally recommended!"

"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)."

"These guts are my go to guys for all HVAC repairs. Rebuilt one of my heaters in an impossible crawl space. Great service & reasonable."

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.