We have used John Ferguson Plumbing and Heating located in Gilford for the past 8 or 9 years to winterize our three bedroom two bath year round house. Matter of fact John or his son will be here at 8am this coming Thursday. They arrive on time and the work usually takes just less than an hour. We also use them to turn everything back on in the spring.
I won't quote a price but I have been paying considerably less than any of the other amounts previously quoted. I'm located in Gilford so I do not know whether Meredith is in the area that he services but his web site references the Lakes Region.
https://www.johnfergusonplumbing.com
603-524-3138