Serving the entire state of Rhode Island

Desmarais Plumbing & Heating Inc | Plumber | Johnston, RI
Backflow services Backflow services Backflow services

Backflow Services You Can Trust

If you need quality backflow testing you can trust, call Desmarais Plumbing & Heating Inc today for professional and reliable service!

  • Backflow testing

  • Backflow repairs

  • Rebuild or replace all backflow preventers

  • And more!

Testing from professionals

Whether you need heating installations or plumbing repairs, your satisfaction is guaranteed when you put your trust in our fully licensed and insured experts!


Call us today for a FREE estimate on any of our services! Our friendly team is here to provide you with great customer service.

Your satisfaction is guaranteed

Trust in our over 20 years of experience!


We're available 24 hours a day, 7 days a week for

your convenience.