A fan suspended from the ceiling of a room. Traditionally used to move air for the purpose of cooling. Commonly seen in older homes without central air conditioning.
Ceiling fans are powered by standard electrical lines. They can be installed in most ceiling mounted light sockets and typically have a light associated with them to replace the displaced light.
Ceiling fans commonly have three controls:
The interesting thing about ceiling fans is that most people view them as simply a cooling device. They can actually be used quite effectively to also move heat in the colder months. The directional control for the fan blades is the real key. When cooling is desired, the fan should be set to pull air up so the cool air is pulled up from the floor and circulated back down the walls. When heating is desired, the fan should be set to push air down so the hot air is pushed down from the ceiling and pulled back up the walls.