• Emergency Calls 24/7 (713) 688-3861
  • Lange Mechanical Services, L.P.
    933 Wakefield Drive, Houston, Texas 77018
  • file certificate icon License Number TACLA133231C


Lange Mechanical About us Banner
Lange mechanical factory
the founder

Years of Experience


About Us

Founded in 1981 by Randy Lange, Lange Mechanical Service, L.P., has been a beacon of integrity, teamwork, and professionalism in the commercial mechanical and building automation system (BAS) services market. Randy’s unwavering spirit and “nothing is impossible” attitude defined the company’s ethos, a legacy his wife, Jamie Lange, continued for 17 years.

Since September 2023, Jonathan Cramer has taken charge as Owner/President, injecting fresh enthusiasm into Lange Mechanical Service, L.P. Committed to upholding Randy’s legacy, Jonathan aims to sustain the company’s status as the foremost Commercial HVAC provider in Greater Houston. Focused on excellence and customer satisfaction, he anticipates guiding Lange Mechanical Service, L.P., to new heights in the HVAC industry, ensuring continued success and top-notch solutions for clients in the Greater Houston area.


Values Drive Our Work Ethic

Randy’s spirit is deeply rooted in the company’s core values. He was often heard around the office echoing a philosophy still applicable to this day.

  • Dream big and don’t make excuses
  • Work hard with integrity & honesty
  • Always lead with service
  • Put customers and employees first

Let’s Connect

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Call Today(713) 688-3861
Address Lange Mechanical Services, L.P.
933 Wakefield Drive, Houston, Texas 77018