A fan has the task of making the air in a room move. Fans are becoming more and more common and make everyday life or work more bearable even on the particularly hot days of the year. The moving air automatically creates a cooling sensation in people. Structure and Function: The air is pushed from the back to the front by the fan, resulting in circulation. This way, the air can be optimally distributed throughout the room, so that the fan is used especially on warm summer days.