basically represents high-volume and low-speed. So, HVLS fans happen to run at lesser speeds than the usual fans, with the output being a non-disruptive and excess airflow. A fan of this kind happens to be a ceiling fan that is larger than 7 feet or 2.1 meters in diameter.

The air produced by an HVLS fan advances in the direction of the floor in a column that emits in each direction, flowing in a horizontal manner, till it touches a wall — or an airflow coming from a second fan — when it moves in the upward direction towards the fan. This results in convection-like air currents that generate as the fan keeps on spinning. The rising air circulation successfully removes hot, humid air and replaces it using drier air. The outcome is a quiet, continuous and even distribution of breeze with a speed 3 to 5 mph across big spaces, with an apparent cooling effect on the occupants by around 10 degree F (6 degree ). On the other hand, during winters, HVLS fans push the warm air near the ceiling towards the floor.