The goal was to make a university building more energy-efficient by improving its HVAC system. Field measurements were taken and used to create energy models to find ways to save energy. By adjusting room temperatures, chilled water settings, chiller performance, shading, and building location, energy consumption could be reduced. The study found that these energy-efficient changes could lower energy use significantly, especially by using a high-performing HVAC system and adding shading to the building. Energy modeling was shown to be a useful tool for finding ways to save energy.