A Zone Pressure Test, also known as a pressure boundary test or compartmentalisation test, is a diagnostic procedure used to evaluate the airtightness and pressure differentials between different zones or compartments within a building. It involves pressurising or depressurising specific areas or zones of the building while measuring the resulting pressure differences.
During a Zone Pressure Test, a blower door or other pressurisation equipment is used to create pressure differentials between adjacent zones. This test helps identify the extent of air leakage between zones and provides insights into the airflow paths and potential areas of concern.
By measuring the airflow required to maintain the desired pressure differences, the test determines the airtightness and pressure relationships within the zones being tested. The results can be used to identify areas of air leakage, evaluate the effectiveness of compartmentalisation strategies, and guide improvements in energy efficiency, indoor comfort, and indoor air quality.
Zone Pressure Testing is particularly useful in multifamily buildings, commercial spaces, or large buildings with multiple zones or compartments. It helps assess the performance of fire separations, verify compartmentalisation measures, and ensure compliance with building codes and regulations.