Airport HVLS Fans are high-volume, low-speed fans, also known as HVLS fans. They can provide substantially more airflow, while at the same time being a quieter and more efficient solution than more traditional fans. HVLS (High-volume Low-speed) fans are ceiling mounted units with a much greater diameter than standard fans. This enables them to produce large volumes of moving air while operating a low speed (RPM), making them much more efficient as well as quieter. It is a mechanical fan that has a larger size than normal fan starting from diameter 8 ft (2.4 m) until 24 ft (7.4 m). Airport HVLS Fans are very effective.