A ceiling fan is a fan which are usually suspended from the ceiling of a room. These devices are used in two ways: to create a breeze for an apparent cooling effect or to force warm air near the ceiling downward to the occupied part of the room. Ceiling fans can reduce heating costs by reducing the load on heating equipment, and they can reduce cooling costs by making warmer air comfortable. Ceiling fans are normally used as a cooling device in warm months by pushing air down from above, thereby creating a wind chill effect. Standard ceiling fan controls usually include one for speed, one for the light and one for directional control of the fan blades. The electrical boxes installed for ceiling fans must be secured well enough to support the weight of the fan.