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 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 multiple speed settings and can be operated by a pull chain, wall switch, or remote control. They come in various styles and sizes, allowing them to fit different room designs. Some models even include integrated lighting, combining both functions in one fixture.