Get matched with top tankless water heater repair pros in Mount Vernon, NY

"Aldo was great. Communicated about when he expected to be there. Was polite and prepared with mask etc to enter the house. Found that he was able to simply repair my valve rather than go through the expensive process of replacing. Impressed with his professionalism and honesty. Would definitely recommend him."

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

"Bob and Tom are great contractors. They not only did an awesome job replacing my water heater, they also identified issues in my chimney while they were connecting the vent pipe for the water heater. I will hire them again for separate HVAC projects."

"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."

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

"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!"

"Tom was terrific....repaired boiler....cost reasonable.....explained everything so clearly so that even this 88year old understood it....experience with company from start to finish was a pleasure"

"Multiple projects, (bathroom sealing, sink clog, water heater installation, shower fixture replacement) all done well!"

"Dave saved us money and got the job done. Another company diagnosed the problem incorrectly and recommended changing a more expensive part that wouldn't have solved the problem. Dave did his own thorough assessment, found the real issue and fixed it right away. Couldn't be more grateful for heat and hot water. Thank you Dave."

"Very professional from Start to finish. He evaluated the overall problem, made recommendations for repair, upon agreement, he got busy and was done in no time at all. Plus cleaned up before he left. Very Happy with his work and my pipes not longer leak !!!"