Wind-catchers, also known as wind towers or badgirs, were traditional Persian architectural elements used for ventilation before the invention of modern air conditioners. These towers often worked together with qanats which were underground channels that transferred water from a well to the surface. A wind-catcher has openings that face the wind and ?catch? it, creating an airflow inside the structure. When combined with a qanat, the air is drawn into the qanat channel and contacts with the cool earth and cold water. Then, the cooled air is pushed out through the openings on the opposite side of the wind tower, creating airflow and cooling the air.

Samuel Bailey

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