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Our Philosophy


I would like to first thank you for considering Lange Mechanical Services, L.P. for your Buildings Air Conditioning and Building Automation System (BAS) needs. Lange Mechanical Services was founded by Randy Lange in 1981; based upon his absolute commitment to integrity, team work and fairness to customers. Lange Mechanical soon became a leading provider of Mechanical and BAS System Services to the Commercial Building Marketplace within Houston and surrounding townships. Today, we employ over 100 employees that are committed to serving our customers with integrity and the highest quality offerings available in our industry.

To quote our Mission Statement, “At Lange Mechanical Services, L.P. we value our employees and customers first”. We owe our past and current successes to our employees who continuously demonstrate quality in customer service and team work. It is our goal to extend career development and advancement to each employee who has the ability and desire to contribute to our success. Lange Mechanical is a Company where an employee can truly grow and develop their careers through to retirement.

Based on the capabilities of our employees, I would be remiss if I did not mention just a few areas of what I believe separates us from the rest of the Mechanical and BAS pack here in Houston.

While the Mechanical Construction industry trends toward complete out sourcing or subcontracting of the core competencies of pipe fitting/welding, duct work and BAS installations; we have made a strategic decision to remain committed to cost competitive and quality self performance of these services.

We have been and continue to be one of the top performing Johnson Controls Metasys Authorized Building Control Specialist (ABCS) and Card Key Authorized Building Security Specialist (ABSS) Contractors in the country. Johnson Controls continues lead the industry with cost competitive and feature rich products.

Our Mechanical and BAS Service Technicians include some of the top talent Houston has to offer. Our depth is second to none in the industry and we remain current servicing and repairing the many OEM equipment types, such as Carrier, Johnson Controls York, Trane and Lennox to mention a few. Our service teams are lead by “people” focused leaders that grew up in the Houston Mechanical Service marketplace. Consequently, they understand the unique systems we utilize in Houston and know how to resolve simple building air conditioning problems quickly. As well, our technicians will tenaciously and efficiently stay with and solve the more complex mechanical and BAS system challenges you might face.

Thanks again for considering us at Lange Mechanical Services and I hope you find our web site informative and useful. Please let me know your feedback and how you think we might improve in the Customer Zone.

Jamie Lange