This training will introduce the audience to the Building Re-Tuning Simulator (BRS), which is a free, easy to use, online tool that helps identify low-cost and no-cost re-tuning measures. Re-tuning relies on building automation system data to identify and implement control measures that ultimately improve the building's energy efficiency, reduce operating costs, and improve occupant comfort. The attendees will learn how to access the BRS tool, develop a building model, and use the re-tuning dashboard to identify energy conservation measures and calculate savings.