Fans are often used indoors and outdoors during the summer months. It results in a cooling effect on workers as well as equipment, a drying effect on surfaces, as well as the exchange of stale air with fresh air. This is as a result of the chilling effect on the workers and equipment. It is common to use air circulators and air cannons for circulating or moving large volumes of air in both indoor and outdoor settings. Fans are more effective than air circulators and cannons when it comes to cooling smaller spaces, like offices, garages, and patios. The radiators of an electrical transformer are cooled by fans that are used to cool the radiators of the transformer.