More blades on a ceiling fan does not exactly mean more airflow.The key aspects related to the blades of a ceiling fan are their angle (determines the angle of attack and has a direct impact on aerodynamic efficiency), their shape and size (depending on the space and surface to be air-conditioned, ceiling height, etc.), the revolutions per minute (RPM) (the range of rotation speeds depends on the room).Ceiling fan models with 3 or 4 blades are considered standard and from 5 blades upwards they offer a much higher airflow.