How is airflow measured in HVAC systems?

Airflow in HVAC systems is measured in cubic feet per minute (CFM) because this unit reflects the volume of air moving through the system over time. CFM indicates how much air is supplied or exhausted from a space, which is critical for ensuring proper ventilation, heating, and cooling. Appropriate airflow is essential for maintaining indoor air quality and comfort levels, as it directly affects the efficiency of the heating and cooling systems.

Measuring airflow in CFM allows HVAC professionals to evaluate how well the system performs and make necessary adjustments to meet the demands of the space. This measurement helps in the design and balancing of HVAC systems, ensuring that air distribution is effective and energy-efficient. Understanding and using CFM is foundational for technicians working with HVAC systems, as it directly impacts system design and functionality.