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• Draws hot air from the living area into the attic where it is vented outside.
• Installation and operation costs less than an air conditioner.
• Keeps a gentle breeze stirring throughout the house and can make the temperature seem 2° to 3° cooler.
• Has louvers that open automatically when the fan is turned on and close when it is turned off to seal out outside air.
• Rated according to the measurement of cubic feet of air per minute (CFM) that it moves.
• Fans with variable-speed motors cool the house at higher speeds and maintain general air circulation when turned down.