Air circulating fans allow human comfort at higher temperatures because they remove moisture from your skin by evaporative action. Fans A ceiling fan consumes about the same energy as an ordinary light bulb. Of the three types, box fans are the most expensive to operate. These air circulating fans work only when someone is in the room to feel the air movement. It does not pay to leave these fans on when no one is around to enjoy them.
Ceiling fans can move air down or up depending on the tilt of the blades.
Heat should be exhausted only when cooler air can be drawn in. Moisture should be exhausted whenever excess moisture is a problem. One of the major problems of staying comfortable in Louisiana is the amount of excess moisture in the air. Therefore, we need to be very careful not to add moisture to the air. Exhaust fans will not lower the relative humidity of your home, but they will go a long way in preventing the rise of relative humidity.