Did you know that you’re supposed to change your ceiling fan direction seasonally? The direction that the fan blades spin can significantly affect your home’s temperature.



During the summer months, you want to run your ceiling fans counterclockwise, as it pushes down the air and creates a cool breeze while providing a consistent room temperature. During the winter months you want to have your ceiling fans running clockwise at a low speed. This will help redistribute warm air throughout the room.



With mounting electric bills or sky-high oil costs, redistribution of warm air could really make a difference by reducing the amount of time the heat needs to be run each day. To change the fan’s direction, there is usually a small switch located near the pull string or cord. 



Source:
https://www.apartmenttherapy.com/reverse-your-ceiling-fan-direction-and-save-energy-138867