About Us Team STSI Throughout Florida, STSI is your single-source independent service provider for comprehensive HVAC Mechanical/Controls and Design/Retro-fit projects. Today’s building managers are forced to do more with less, preventative maintenance on HVAC and building automation have never been more important.  We offer Service Solution Agreements that fit every company’s business goals and budgets.  Let Team STSI provide you with the service you deserve and the cost control you need. Commitment Our commitment to a “Customer for Life” starts with good values and integrity as our foundation.  This is complemented by continual education and training of our technicians.  The result is superior service and innovative solutions that lower operating costs and promotes healthier building environments. STSI MISSION In our pursuit of a “Customer for Life”, we will demonstrate an urgent and relentless commitment to achieve total customer satisfaction through superior service and innovative solutions.