Press the "Reverse" button on the remote control of the ceiling fan to change the direction of the airflow. Press the "Reverse" button again to revert to the previous direction of airflow. If your fan does not have a remote control, proceed to step 2.
Turn the fan off. Locate the reversing switch. It is on the base of the fan near the fan speed and light switches.
Slide the switch to the opposite side. Turn the fan on. Change the rotation of the fan to clockwise in the winter and counterclockwise in the summer.