How Different Types of Hand Dryer Work
All hand dryers are not the same. There are two key ways in which they can remove moisture from your hands after washing.
Older models will often use a slow-moving stream of air which causes the water to evaporate as you rub your hands together in the airflow. These types of hand dryer are quite slow to operate, and because they use both a heater and a fan, they are less efficient.
An alternative to an evaporative hand dryer is one which uses jets of air to blow the water off the surface of your skin. Jet Hand Dryer models such as the Mitsubishi Electric Wave i01 and u02 use this type of technology.
Most modern hand dryers feature a no touch design, which means that the user does not need to push a button to switch the device on. This is more hygienic because it reduces the chance for the spread of germs between users.