What is a common unit of measurement for air flow in HVAC systems?

A common unit of measurement for air flow in HVAC systems is cubic feet per second. This unit is widely used because it provides a straightforward way to quantify the volume of air that is moved through a system over a specific period. HVAC professionals often need to consider air flow rates for various applications, such as determining the efficiency of heating and cooling systems, ensuring adequate ventilation, and calibrating equipment for proper operation.

While other options like cubic meters per hour, gallons per minute, and liters per minute can be applicable in different contexts (such as liquid flow measurements), cubic feet per second is specifically tailored to measure air flow, making it the standard in HVAC applications. This focus on airflow rather than liquid measurements highlights the importance of using the correct units that correspond specifically to the type of flow being analyzed in HVAC scenarios.