Traditional fans with blades work by pulling the air from behind the fan in and making it move faster. This action doesn’t actually cool the air, but it creates a cooling effect when you are in front of the fan – like a breeze on a hot day.
A tower fan works in the same way, but where a traditional fan moves the air horizontally and often in a small space, a tower fan works vertically for a long shaft of air.
A bladeless fan sucks air in through small vents at the base and propel it upwards through the frame. This air is then forced out of a slit in the frame which changes its direction and pushes it forwards. This motion also helps to pull additional air in from behind the fan for increased airflow, meaning you use less energy to propel more air. They are also safer than a traditional fan as there are no exposed blades to cause injury.