Leave Us An Honest Review

Our radon filter stopped working. They came out right away and didn't charge any extra for coming so quickly. John and Frankie diagnosed the problem and we ordered the part. They even offered some advice on our water and the best way to treat it! We will absolutely be using them again!

- Amy L. Yelp Icon

We called for an emergency water leak on a Saturday morning. John made it over within two hours and had the problem fixed in just a few minutes. We will absolutely use Mainline for our future plumbing needs.

- Cody P. Google Icon

Pressure tank blew one night. I called them and they made time the next day to come right out and fix it. Fast and effective!

- John S. Yelp Icon

John from Mainline installed a whole house water softener in my house. He was very responsive and knowledgeable. He presented options available and the information for me to make an informed decision. All while not sale pressuring me which is very important to me. I highly recommend using Mainline.

- Brian. M. Google Icon

We had no water in our house today and called Mainline Plumbing and well pumps. Spoke to John Faith at 8am to arrange an appointment to troubleshoot our issue. He promised to be at our house within a couple of hours and was there in 1 hour! After a couple of minutes inside our house at the well tank and then, outside at the pump, John determined our pump needed to be replaced. He explained our options and said he could have us up and running soon. Great job to have us back in business and we were glad to give John and Mainline a glowing review.

- Gale C. Yelp Icon

Mainline replaced and upgraded 30-year-old supply fixtures including water supply tank, water softener system, and original plumbing. We were lucky enough to get the estimate and the work done on the same day. The job was quick and efficient, the crew was polite and organized and the finished product was customized to the needs of the household. Would recommend John and Mainline anytime. The quality of water has vastly improved since the work was done!

- Daniel P. Google Icon

The day before Thanksgiving our basement flooded. After calling Servpro the next call I made was to Mainline Plumbing. John from Mainline Plumbing arrived at our home within 30min to help get our situation under control. John was knowledgeable, informative, and supportive. He also returned the day after Thanksgiving to finish the job. I can't thank Mainline Plumbing and John for their prompt quality customer service.

- Karen B. Yelp Icon

Experienced extremely low water pressure after losing power on Saturday. Fortunately, John came to help us out less than an hour after calling the day of Christmas! John was able to find the problem right away, a clogged water filter. He replaced the filter and we are back up and running!! Thank you John for saving the day!

- Lynn H. Google Icon

I think so highly of this locally owned company. I remember growing up in Londonderry, NH and seeing their banner hang at the LAFA Complex. Thanksgiving weekend our well pump went I called Mainline who was not even open and they showed up the next morning at 8:00 AM and were done in less than 2 hours. With a full house of 3 kids, my wife and I, no water is a real issue. Mainline and their employees took care of our problem on a Sunday! I highly recommend their services to anyone looking. The personal touch was unquestionable. The price was fair and reasonable. I undoubtedly would hire them again.

- Michael C. Yelp Icon

John at Mainline Plumbing was a pleasure to do business with. Professional, personable, and good communications. He installed a PFAS water filtration system (POE PFAS reduction system) for me today. Work was completed quickly and professionally. Best part, John takes care of sending all the rebate forms to the State of NH and he is reimbursed directly by the state. This means no money out of pocket for me!

- Jim M. Google Icon