Testing Specialties Inc. (TSI) is San Antonio’s premier building systems testing, balancing and engineered solutions provider. Originally formed in 1984 as an HVAC Test and Balance company TSI’s services have grown to include a myriad of services related to the design, construction, commissioning (new construction, LEED, retro-commissioning) and independent testing of building mechanical, electrical and fire life safety systems including HEPA filter leak tests, clean room certification, commercial and residential blower door testing, duct blast testing and sound and vibration testing. TSI also provides real estate related development and operational services including project and construction management, due dilligence and site acquisitions services, energy modeling and building audits. Our nationwide clients rest easy at night knowing that our involvement on their project team will ensure optimum building performance at the time of occupancy and for years to come.