4-L Engineering

About 4-l

Transforming the Air Conditioning and Plumbing Industry

We exist to transform our industry, community and world through a relentless commitment to identify root cause problems and provide innovative solutions. Our team of highly-trained technicians and engineers make this possible through the implementation of our core guiding principles: 

  • Provide quality services marked by integrity
  • Build long term value for employees by serving our community, customers, and families
  • Meet people where they are with understanding
  • Go beyond the symptoms to identify the root of a problem to find long-term solutions
  • Make a difference by investing in our community and the world
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Our Mission and Vision

Our mission to bring innovative solutions to the complex environment of commercial mechanical services. Our vision is to transform our industry, community and world through a relentless commitment to identify root cause problems and provide innovative solutions.

Our Core Values

We are guided by our core values across every team and project at 4-L. These values are reflected in our customer service, commitment to excellence, integrity in our partnerships, and the culture that drives our team.

Integrity

We do the right thing the first time

Excellence

We take ownership of the quality and accuracy in everything we do

Community

We care about each other and the impact our actions have on our team

Innovation

We push ourselves to find solutions for processes and tools with the future in mind

A Legacy of Excellence

4-L was founded in 1964 by Phil Hansford in the Dallas / Fort Worth area. In 1984, Charles Hansford took the role of President and CEO and began building the company as it is today, adding a plumbing department in 1985. Over the years, 4-L has grown to serve clients who make a difference in our community, including schools, hospitals, colleges and prominent high-rise buildings in downtown Dallas. Through it all, the company has maintained its emphasis on providing the highest level of engineering quality in every project.

A High Value on People

4-L believes our people are an extension of our company. We hire qualified employees who are willing to go above and beyond, serving clients with excellence and integrity. Our ongoing training programs, family-focused values and competitive benefits demonstrate our commitment to our people. Every project at 4-L requires a team effort, and we recognize the value a world-class team brings to the table.

EMPLOYMENT AT 4-L

Company Information

TACLA004772C / M-40869

Regulated by the Texas Department of Licensing and Regulation・P.O. Box 12157・Austin, TX 78711・(800) 803-9202  www.tdlr.texas.gov

Regulated by the Texas State Board of Plumbing Examiners・P.O. Box 12078・Austin, TX 78711・(800) 845-6584  www.tsbpe.state.tx.us

Master Plumber:  Charles Womack, M-40869

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Careers at 4-L

We’re hiring! Find your next career at 4-L by filling out an application.

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Contact us

Contact 4-L for precision air conditioning and plumbing services in Dallas, TX

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