Welcome to the United Mechanical site at Linked In. We are a Dallas, Texas based mechanical contractor offering a wide range of services to our clients. We have been involved with thousands of projects encompassing every phase of mechanical work, including plumbing,welding, piping, sheet metal, HVAC, and design build services. For over 60 years, United Mechanical has been exceeding customer expectations of excellence. Our qualified staff is dedicated to the timely completion of your project; no matter how large or small. Our service department is available 24 hours a day, 7 days a week.