The function of a leafless tower fan is to circulate and cool the air in a room. It uses a vertical design with a tall, slim profile that takes up less space compared to traditional fans. The leafless design means that it does not have visible blades, making it safer and easier to clean. The tower fan draws in air from the surrounding environment and then propels it out through the vents, creating a continuous flow of cool air. It usually comes with multiple speed settings, oscillation feature, and sometimes additional features like remote control and timer. Overall, the function of a leafless tower fan is to provide efficient and effective air circulation and cooling in a room.