Abstract
The study investigates the impact of air purifiers and window opening schedules on indoor PM2.5 concentrations and energy performance in a public office building in Bolzano, Italy. Annual multi-zone building simulations were conducted using TRNSYS and TRNFLOW. Results showed that air purifiers effectively control PM2.5 to maintain air quality. Different scenarios were analysed based on window opening fractions, placement and Clean Air Delivery Rate (CADR) of air purifiers. The best scenarios balanced low energy use and minimal PM2.5 threshold exceedances, suggesting air purifiers in alternate rooms for highest efficiency. Recommendations were made for purifier placement and usage to achieve air quality and energy efficiency.