Originally Posted by GooSearch

in fla i have ceiling fans in each room.. all of them run constantly.. power bill stays about the same

Most ceiling fans can be used in two different ways; that is, most fans have a mechanism, commonly an electrical switch, for reversing the direction in which the blades rotate.

In summer, when the fan's direction of rotation is set so that air is blown downward (typically counter-clockwise, when standing under the fan and looking upwards), the breeze created by a ceiling fan speeds the evaporation of sweat on human skin, which is experienced as a cooling effect.

In winter, buildings in colder climates are usually heated. Air naturally stratifies--that is, warmer air rises to the ceiling while cooler air sinks to the floor. A ceiling fan, with its direction of rotation set so that air is sucked upward (typically clockwise, when standing under the fan and looking upwards), takes cool air from lower levels in the room and pushes it upward towards the ceiling. The warm air, which naturally rose to the ceiling, is forced out of the way of the incoming cool air: it travels along the ceiling and down the walls, to lower levels where people in the room can feel it. This heat-reclaiming action allows for cost reduction, by making it so that less fuel needs to be expended in order to heat the room to a comfortable temperature and keep it there.