Lange Mechanical Services, L.P. is a HVAC Full Service Mechanical Contractor serving the Greater Houston Metro area since 1981. We are a Johnson Controls Authorized Building Controls Specialist Contractor. At Lange Mechanical, we value our employees and customers first. We are a company that provides flexible, scaleable Mechanical and Building Automation System services to the commercial building marketplace. Our mission is clear; LMS is still here! We survived THE UNTHINKABLE and we’re committed to servicing our customers with the same level of pride, integrity and professionalism...Everyone knows: Randy Lange knew how to run a Company.