About Us

An Established and Trusted Name in American Industry

Delivering reliable plumbing, HVAC, and mechanical contracting solutions for more than 60 years.

Opening Times

Available 24/7, 365 days a year

Our Location

11540 Plano Road Dallas, Texas 75243-5214

Customer Support

(214)-341-9300

Built on Experience. Driven by Quality.

Vision

Our Vision

Our vision is to become a trusted leader in mechanical engineering and service solutions, recognized for delivering exceptional quality, reliability, and long-term value to our clients. United Mechanical aims to set the standard for excellence by consistently providing innovative mechanical solutions that support the growth and success of the businesses and industries we serve.

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Our Mission

Our mission is to deliver high-quality mechanical solutions that meet the evolving needs of our clients while maintaining the highest standards of craftsmanship, safety, and reliability. United Mechanical is committed to providing dependable plumbing, HVAC, and mechanical services through experienced professionals, advanced engineering practices, and a strong culture of accountability.

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Our Capabilities

United Mechanical is an innovative and quality-focused mechanical contractor, utilizing advanced tools, modern equipment, and the latest technology to plan and execute every project with precision. While we continue to invest in technology and operational efficiency, we believe our greatest strength lies in our people. Our team’s commitment to quality, safety, and performance drives the success of every project we undertake.

Below is a selection of key qualifications and capabilities that define United Mechanical.

  • Experienced Leadership & Workforce
  • 24/7 Mechanical Service
  • Extensive Inventory & Rapid Response
  • Self-Performing Mechanical Contractor
  • Safety Commitment
  • Advanced Fabrication & Engineering
  • BIM & Digital Coordination
Our project management team brings extensive industry expertise, with each manager possessing more than 18 years of combined field and project management experience. Supporting them is a highly skilled core group of field superintendents, foremen, and mechanics—many of whom have been with United Mechanical for over 20 years, providing unmatched continuity and expertise across our operations.
United Mechanical provides fully dispatched plumbing, piping, and HVAC service 24 hours a day, 7 days a week. Our team typically responds to non-emergency service requests the same day, while emergency calls can often be addressed in under 60 minutes, ensuring our clients receive prompt and dependable support when it matters most.
To ensure fast and efficient service, we maintain more than $1 million in inventoried pipe, valves, fittings, and specialized plumbing, piping, and HVAC components. Our strategic material purchasing and inventory management allow us to secure volume discounts for cost savings while ensuring rapid response for urgent repair situations.
United Mechanical self-performs all major HVAC, plumbing, and piping work, including ductwork fabrication and installation. Maintaining control of these critical services allows us to ensure consistent quality, efficiency, and accountability throughout every phase of the project. Only specialized scopes such as insulation, testing and balancing, and controls may be subcontracted when required.
Safety is a core priority across all of our operations. Our dedicated in-house safety staff works proactively to maintain safe job sites and protect our team members. Through consistent safety practices and training, we have maintained an Experience Modification Rate (EMR) averaging below 0.73 over the past four years.
United Mechanical operates a fully automated coil line and fabrication shop, allowing us to produce high-quality ductwork and components with efficiency and precision. Our in-house engineering team includes licensed Professional Engineers, CAD operators, and experienced designers who provide comprehensive design-build and design-assist services.
To improve project coordination and reduce construction conflicts, we utilize advanced Building Information Modeling (BIM) tools. Our team performs detailed design coordination and clash detection using industry-leading software including REVIT MEP, Navisworks, AutoCAD MEP, CAD-DUCT, and CAD-MECH.

Our Journey

Every company has a story, and ours is built on hard work, craftsmanship, and long-term relationships. Since 1949, United Mechanical has grown from a small local business into a respected mechanical contractor, supporting projects of all sizes while staying true to the values that built our reputation.

1949 — The Beginning

United Mechanical was founded as a small plumbing service company focused on delivering dependable service to local homes and businesses. From the start, the company built its reputation on integrity, reliability, and quality craftsmanship.

 

1960s — Expanding Services

As the region continued to grow, United Mechanical expanded its capabilities beyond plumbing to include HVAC systems and larger commercial mechanical projects.

1990s — Building Industry Expertise

The company established itself as a trusted mechanical contractor, supporting commercial developments, industrial facilities, and institutional projects with reliable mechanical systems and experienced field teams.

2000s — Advancing Technology

United Mechanical began integrating modern engineering practices, including digital coordination, improved fabrication processes, and advanced project management methods to improve project efficiency and system performance.

Today — A Trusted Mechanical Partner

Today, United Mechanical continues to build on its legacy of quality and reliability. With decades of experience and a team of skilled professionals, we provide mechanical solutions that support complex construction projects and long-term facility performance.

Our Strengths

The People Behind Our Success

Meet the experienced leaders and industry professionals who drive the vision, performance, and continued growth of United Mechanical.

President & CEO
David Osborne

History

David started with United in 1973 right out of Garland High School as an apprentice sheet metal mechanic. He then moved up from foreman, superintendent, to Project Manager in 1988, before leading United as President beginning in 1997. His superior knowledge and expertise with HVAC, Piping and Plumbing systems and Mechanical Contracting, gained over 42 years with United, coupled with his steady, strategic, intelligent leadership of our company is invaluable.

Under his leadership, United’s reputation for quality work and superior safe performance is well-known across the industry. One of David’s favorite quotes is that we strive to be “not the biggest, but the best.”

As President and CEO, David has always revolved around “do what you say you’re going to do,” and has emphasized taking great care of our employees and customers, and United being the lead subcontractor or contractor on any project we perform.

Professional Credentials:

  • Holder of United Mechanical Boiler, CNG, LPG, Gas Services License
  • Holder of Texas Air Conditioning/Refrigeration License
  • Past Board Member of Western Bank of Garland, Texas
  • Former Chairman of the E.M. Bruins Foundation
  • Inventor of specialty steam cabinets for garments and many other specialty products and systems

Personal Interest and Affiliations:

  • Chairman of State Fair of Texas “Shooting For The Stars” Scholarship Program
  • Board member of the Garland FFA Show Committee, White Rock Rotary, and Dallas AG Club
  • David enjoys ranching, charitable and civic involvement, and stays connected with political leaders.
Executive Vice President
Brian Chester

History

Brian’s life and livelihood always has and always will be tied to United Mechanical. Bill Chester, Brian’s uncle, was a founder of United in 1949. Over the next 5 decades, Bill, his son Gerald and brother Bob all served as dedicated leaders of United. So after many summer breaks during high school and college working for United in the field, it was a natural for Brian as a graduate of Texas A&M in 1989 to follow his father Bob’s footsteps and continue at United.

Brian started in purchasing in 1989 and moved to Project Management in 1992. After 14 years in Project Management including Design/Build, he then began his role as Executive Vice President in 2006, with an emphasis on Contract Risk, Risk Management, and Insurance.

Brian strongly believes that the risk that United assumes through contracting should be strictly limited to those risks that United can directly control.

Professional Credentials:

  • Bachelor of Business Administration, Accounting and Finance, Texas A&M University
  • LEED AP Accredited Professional
  • Holder of State of Oklahoma Plumbing, HVAC and Contractors License
  • Construction Site Safety 100 Hour – CSST

Personal Interest and Affiliations:

  • Past Chairman of the Texas Construction Association and the American Subcontractors Assoc. of North Texas.
  • Brian enjoys duck hunting, fly fishing, golf, and traveling with his wife, sons and daughters. He also dedicates his efforts toward assisting charities and advocacy for the subcontracting industry.
Vice President
Jeff Harris

History

With more than 20 years of experience in the mechanical industry, Jeff brings a broad set of skills and expertise to his role of Vice President of United Mechanical. LEED AP since 2009, he has worked on many of the company’s most complex and challenging mechanical installations serving a wide range of industries. His customer base includes telecommunications, data centers, churches, entertainment venues, restaurants/commercial kitchens, food processing facilities, water bottling plants and senior living facilities.

Jeff’s well-rounded background in the mechanical, plumbing and sheet metal industry includes proven success and expertise in strategic planning, management, communications and policies/procedures. Known for being both effective and cost-efficient, Jeff focuses on budgeting, cost control and negotiations to deliver maximum value to his clients.

Jeff has been part of the United Mechanical team since 2001. His responsibilities today include supervision of the mechanical division, and overseeing both the pre-construction division and field operations.

His strong work ethic and proactive approach to fulfilling his clients’ needs has earned Jeff several esteemed performance awards, including Subcontractor of the Year awards for both AT&T and Plano Independent School District projects. But Jeff is most proud of the loyalty he’s earned from both his customers and his colleagues in the field. His personal motto is that hard work and dedication are essential ingredients in achieving excellence.

Professional Credentials:

  • Texas Journeyman Plumbing License
  • Oklahoma Mechanical Journeyman License
  • LEED AP

Personal Interest and Affiliations:

  • Jeff believes strongly in giving back to the community. He helps support, Frisco Family Services and The White Rock Center of Hope in their missions of providing emergency aid and sustainability to the less fortunate, and the Carson Leslie Charity Foundation, which raises funds and awareness for pediatric cancer research.
  • When he’s not with his wife and three daughters, Jeff enjoys ranching, hunting and raking in the pots at the Texas Hold’Em table.
Vice President
Steve McClure

History
Steve began his career in the mechanical industry at Texas Tech University where he studied Construction Management from 1991 to 1994. He then worked for Anthony Mechanical from 1994 to 2001. This is where he learned to service large chillers, boilers, and rooftop units. Steve then moved to running service projects and service calls for Anthony Mechanical for 6 years before deciding to move back home closer to his family and friends.

Back in the neighborhood in 2002, Steve interviewed with United Mechanical and was offered a position as service technician, and then quickly transitioned to run our HVAC service department in 2004-. He immediately began overhauling the department while keeping the integrity and quality of work at an industry high, with the commitment to service and quality that United is known for.

In 2013 Steve took over as the General Manager of service, handling the HVAC and Plumbing departments. This is where he began helping the managers in areas to help the business run seamless while the business continues to grow. In 2014, he transitioned from General Manager to Vice President were he continues to run the service department and help with the day to day operations.

Steve is fanatical about customer service, he wants our clients experience to be positive from the time the call is generated to its completion. Customers are United’s best assets, and we always strive to exceed expectations. He spends a lot of time training the service guys on the procedures of a proper service call. We like to educate our customers and let them make the decisions, then support them in any way we can.

Professional Credentials:

  • Professional Credentials:
  • TSTC HVAC Technical College
  • Texas Tech University – Construction Management

Personal Interest and Affiliations:

Steve enjoys his 3 boys and coaching all of them in sports, CrossFit, Running, biking, and learning to play golf. When he get any extra free time he and his wife Jenny like to go to dinner, have a few drinks and laugh about how crazy life is with 3 little boys