What does the abbreviation "CFM" stand for in HVAC terminology?

The abbreviation "CFM" stands for "Cubic Feet per Minute." This term is essential in HVAC as it measures the volume of air that flows through a system per minute. Understanding CFM is crucial for determining the efficiency of air distribution systems, ensuring that heating, ventilation, and air conditioning systems are properly sized and operated to provide optimal indoor air quality and comfort. It helps technicians assess airflow rates when designing ductwork, selecting fans or blowers, and balancing air distribution throughout a building.

The other options provided do not accurately reflect the established industry terminology associated with air movement. Therefore, recognizing that CFM specifically denotes the volume of air flow in cubic feet over the time period of one minute is key to grasping its importance in HVAC systems.