A ceiling fan is a mechanical device mounted on the ceiling that uses rotating blades to circulate air in a room. It helps create a cooling effect by moving air, making the environment feel more comfortable, especially in warm weather. Ceiling fans can also be used in winter to distribute warm air that rises to the ceiling. Most ceiling fans have a motor that powers the blades, which can rotate in either direction. This feature allows them to be used year-round, as they can push warm air down in the winter and create a breeze in the summer. Many models come with light fixtures, adding both functionality and style to a room.