GF-14 Garage Fan and Attic Cooler The GF-14 is the #1 Garage Fan and Attic Cooler in the USA it moves the hot air out of the garage into the attic through the fan mounted in the garage ceiling. The GF-14 Fan brings in cooler air through the bottom front (door intake grills) of the garage blowing up in to the attic pushing this super-heated air out the existing attic vents.