Ceiling fans can increase comfort and save energy as they help warm or cool you, depending on which way they turn. Many ceiling fans have a forward and reverse switch. In forward mode, blades turn clockwise and air blows down, creating a breeze and a cooling effect. This mode reduces summer air-conditioning costs. In reverse, blades turn counterclockwise, pulling room air up, causing warm ceiling air to be gently pushed down outer walls and reducing winter heating costs and condensation.