Cooling fans circulate and move air for cooling workers or equipment. They help reduce the risk of heat stress and prevent equipment from overheating. Equipment-cooling and axial fans install into enclosures and racks to cool machinery and electronic components such as computers, vending machines, copy machines, and machine tools. Industrial cooling fans are heavy-duty fans for general cooling or spot cooling in large or open spaces. Office and desk fans cool small spaces such as offices, garages, and patios. Vehicle bolt-on DC fans operate on DC power sources typically found in vehicles and on agricultural equipment.