Air circulation analysis in Building Information Modeling (BIM), in collaboration with Computational Fluid Dynamics (CFD), offers a sophisticated approach for optimizing HVAC systems through a high-detail Building Dynamic Model (BDM). By integrating BIM’s detailed spatial data and CFD’s advanced simulation capabilities, designers can accurately predict airflow patterns, temperature distribution, and ventilation effectiveness within complex building environments. This synergy between BIM and CFD enables the assessment of various HVAC design scenarios, ensuring optimal air distribution and thermal comfort while minimizing energy consumption. The high-fidelity BDM captures intricate architectural and mechanical elements, enhancing the precision of CFD simulations. This collaborative approach empowers designers to make informed decisions, resulting in HVAC systems that deliver superior indoor air quality, energy efficiency, and occupant satisfaction.