How ceiling fans move air? A ceiling fan is a simple electrical appliance with blades mounted on a motor which rotates the blades to push the air and create airflow. The airflow from ceiling fans is measured in Cubic Meter Per Minute (CMM). The airflow has two components, the volume of air moved and the speed at which that volume of air moves. Fan designers vary the two components to make fans suitable for different applications with the same airflow….