A cool mist humidifier humidifies the room with filters and a fan. As a result, the water evaporates in a natural way, so that the room never gets too humid or not humid enough. Which cool mist humidifier suits you best depends on the room you want to place it in. Make sure to check in advance whether the cool mist humidifier is powerful enough. In addition, check the capacity of the water tank. You don't have to fill a cool mist humidifier with a large tank as often as one with a small tank.