Get matched with top water main install, replace or repairers in Montgomeryville, PA

"It went very well. Ross and crew showed up early and did a major repair to all the main bathroom fixtures where a leak was discovered behind the bathtub wall. The work was done in half a day with minimal disruption to the bathroom itself. There was less tearing up than expected and water pressure restoration was a bonus. I would DEFINITELY call this crew again for major plumbing repairs! KUDOS to you and your crew Ross!!"

"The workmanship was very professional and cleaned up afterwards. Wouldn't even know they were here. Billy did an excellent job with the removal and instillation of a new hot water heater. Brought the instillation up to code by adding a drip pan and expansion tank. I have them coming back to replace valves for washing machine and installing shutoff valves."

"I had a leak in a water pipe in the mother-in law apartment. Tried to fix it myself to no avail. I called and left a message around 10pm. Mike called me back at 7am and told me that they could come out sometime 10 to noon. Shawn and his assistant did a great job at a good price! I will be using Gallagher's for all of my plumbing going forward. Thank you Mike"

"They were fast and willing to work with us on install of a replacement water heater."

"He arrived on time, cleared clog, replaced bad pipe section and explained all he was doing as he went along."

"On the price, I don't, but it was also reasonable. They had also installed a water heater like a year before, reasonable. For sure they're a good service provider, any issues I have with the HVAC or my water system, I'll go to them. They clean up behind themselves; I don't have to do much."

"Excellent customer service from office rep,Stacy to mechanic Dave and his helper. Work was done professionally and they cleaned up after they were done. They were easy to talk to and explained everything.This is the second time I used them and I would use them again in the future.They were a bit on the expensive side."

Proudly serving the Main Line. Built on trust, consistency, and showing up when it matters.\nWe diagnose issues correctly, explain your options clearly, and fix problems the right way — not the quick way.\n\n• Upfront pricing, no surprises\n• Fast response times\n• Clean, professional technicians\n• Quality work that lasts\n\nServices:\nWater heaters • Drain cleaning • Leak repairs • Sewer issues • Water filtration • General plumbing

"Tyler from Resistance did great job. He replaced & updated the service and panel along with running an underground line to my shed"

In 1972, Donnelly’s Cooling, Heating & Plumbing began serving Pennsylvania residents with premier plumbing services and later expanded to add their superior HVAC services. As the area’s top choice for plumbing, heating, and cooling service, we’re proud to offer unmatched professionalism and quality results.\n\nWith same-day and emergency services, our team is always available for your home service needs. Plus, with service for all brands and free estimates, you can trust you’re in excellent hands with our team.