Dallas Plumbing Company is a family-owned commercial and residential HVAC and plumbing company based in Dallas, Texas since 1 ... 903. That's 5 generations of family-style service in the Big D. 2017 marks our 114th anniversary in business here in Dallas. We are very proud to have such a long, successful history here, and we look forward to doing business with you. DPC serves the entire Dallas-Fort Worth area, the great State of Texas and beyond. read more