Final answer:
The required CFM for an A/C system is calculated based on factors like room size, insulation, windows, and occupancy, not directly on factors such as outdoor temperature.
Step-by-step explanation:
The required CFM (Cubic Feet per Minute) for an A/C system is determined by factors such as the size of the room or building, insulation levels, number and type of windows, and the occupancy of the space. To maintain a comfortable temperature and ensure efficient operation, the system must circulate a specific volume of air, considering both the removal of heat and humidity and the introduction of cool, conditioned air. This computation typically includes calculations involving the residence's thermal characteristics and the desired temperature differential between the inside and outside of the structure. Factors like outdoor temperature can affect the heating or cooling load but are not directly used to determine CFM.