CFM stands for cubic feet per minute. It is a term used to describe a fan’s efficiency in terms of airflow.
Calculating the CFM of a room helps when choosing a fan.
Formula to calculate CFM.
First, you have to know the volume of the room and how many times you want air to exchange
Suppose you have a room that has a volume of 700 cubic feet, if requires two air turnovers per minute, calculate the CFM of the room.
Therefore, the CFM of the room is 23.3.