Best Back Flow Preventer in Boston MA

We had a water heater fail and decided to install a tankless system to avoid future messes. Ernie at MetroBoston Plumbing & Mechanical explained the various products involved to help in our decision. The installation went smoothly, organized and cleanly. We couldn’t be happier with the work and the clean up. I recommend MetroBoston Plumbing & Mechanical wholeheartedly.