L & S MECHANICAL

About Us | L&S Mechanical L & S Mechanical, Texas’ Largest Provider of Heat and AC, Electrical, and Plumbing Services A Story of Excellence L&S Mechanical began as a Dallas-based contractor in 1985 and has grown over the years to have six locations out of Dallas, Fort Worth, Houston, San Antonio and Austin. Over the past thirty years, we have become known as the premier provider of new home construction in the plumbing industry. In the last 10 years we have added HVAC and electrical services to now offer the Tri-Trade Solution ℠ .