What must be performed prior to installing a building or airspace pressurization system to evaluate capacity requirements?

Prior to installing a building or airspace pressurization system, it is crucial to conduct pressure and airflow measurements to evaluate capacity requirements effectively. This process involves assessing the existing conditions of the space where the system will be installed. Accurate measurements of pressure differentials and airflow rates help determine the performance needs of the system, ensuring that it will adequately control contaminants, air quality, and thermal comfort. By understanding these dynamics, the system can be designed to meet both the building's requirements and regulatory standards.

While design assessments, cost estimations, and material selections are important components within the overall planning process, they rely heavily on the data gathered through pressure and airflow measurements. Without this fundamental information, any subsequent design or estimation may result in a system that cannot effectively maintain the desired specifications or performance outcomes.