In what units are fan airflow pressures typically measured?

Fan airflow pressures are typically measured in inches of water column. This unit is particularly useful in the HVAC industry because it provides a clear understanding of the pressures that fans can generate as they move air through heating and cooling systems. Inches of water column reflect small pressure differences that can greatly affect system efficiency and air distribution.

This measurement is practical for assessing the performance of various HVAC components, including duct systems and air handling units, as it directly correlates to how well the system can perform under various conditions. By using this unit, HVAC technicians can accurately diagnose issues, make adjustments, and optimize airflow for effective heating, cooling, and ventilation.

While other units like Pascals or pounds per square inch are also used in different contexts, they do not offer the same level of practical application and granularity for assessing airflow pressures in HVAC systems.