High-volume air movers and fans are valuable tools for both water damage restoration professionals and do-it-yourselfers cleaning up after flood damage. These powerful fans use efficient, yet powerful, motors to create high-velocity airflow that dries water-damaged areas quickly. During operation, an air mover rapidly moves the air around in a space, which heightens the rate of moisture evaporation. These portable fans can dry carpets, hard floors, upholstery, and walls. Air movers are also frequently used for general air circulation and for added ventilation in areas such as crawl spaces. Special features may include multiple drying positions, selectable motor speeds, and antimicrobial protection. Some models also support stackable or daisy chain configurations.