Tri-State Plumbing & Heating, Inc. (301) 739-9308 Home Services Contact Tri-State Plumbing and Heating Inc. has been family owned and operated for over 25 years. We provide quality service at an honest price. Our friendly and knowledgeable staff can complete a wide range of plumbing needs. From fixing a small leak to installing a whole house system, Tri-State Plumbing and Heating is there for you. POWERED BY