I had three water heaters that were over 10 years old and needed to be replaced. I contacted Mr. Plumber and they were so helpful! I also had some pipes that were making some knocking noises (not good) and they guaranteed that the knocking would stop once the new water heaters were installed. The knocking did indeed stop! One of the installers, Ben, was especially helpful. He answered all my questions and took the time to explain to me exactly what the problems were. They even did the installation on the same day! If you have plumbing problems I can definitely recommend Mr. Plumber! Thank you!