Mainline Plumbing

Mike was extremely professional and explained everything before he did the work. Mainline sent him immediately and we also received the Senior Citizen discount which helped out with our bill. Mike was a great plumber and explained he comes from a family of plumbers. You’re in good hands with Mike and the local company Mainline in Londonderry, NH. Thank you for our blessing in disguise

Mike was fantastic! He was on time, informative on the issue, and knowledgeable on the best solution for our sink plumbing. He provided us with a great recommendation for the solution to plumbing work. Will not hesitate to contact him again. We’ve already recommended him to our friends and family.

We used Mainline plumbing after purchasing a new home. They were incredible. John and his team gave us a quote and full install of a top tier filtration system within days. They also assisted in applying for the state rebate, saving us thousands of dollars. We will be using them for all plumbing needs moving forward and would recommend them to anyone.

Conner and George were exceptional! They came in with everything they needed, and cleaned up afterwards! They were able to help fix our plumbing issues very fast, and when they noticed how hard our water was they were able to test it on the spot! They were able to explain what they found, and I understood what they were saying.. They are a wonderful company and we highly recommend them! Thanks for providing wonderful service!

I called Mainline hoping to get some answers on an outdated and out of code hot water system. John came out same day and walked through my options with me. The next day, John's team came out and had a brand new water heater and all new piping installed in just a few hours! No more polybutylene!! I would recommend this company for anyone in need of plumbing help.