This document discusses the importance of proper air balancing in buildings and facilities. It begins with defining building pressure and listing symptoms of negative pressure. Unbalanced facilities can cost thousands per year in unnecessary energy expenses. Common causes of imbalance are equipment issues and poor maintenance. Regular air balancing checks the HVAC system's performance and ensures positive pressure and proper airflow. Facility managers should schedule balancing to improve comfort, efficiency and equipment lifespan. A case study shows how balancing found many issues across 4 locations.