About SIS

Welcome to Southwest Installation Services!


Southwest Installation Services was established in 2000 by Jack and Janet Drewien. The company was founded on a belief in hard work, professionalism, industry expertise and a commitment to quality service. Located in the Heart of Texas, Southwest Installation Services has the ability to service customers in most major markets in Texas, as well as more remote locations throughout the state.

Jack’s 25 + years of industry experience at prominent Steelcase and Haworth Dealerships gives SIS the foundation for the consistent high quality service that our customers have come to expect. We are constantly striving toward executing our industries best practices in our daily pursuit of project business.


An active and participating member since 2000.