Very quiet, this humidifier is perfect in a baby room, for example.
It is a natural process that relies on the presence of an absorbent filter made of vegetable fibers placed directly in the tank of the device. This filter is soaked with water by capillarity and a fan blows air through it. The air diffused is humid, invisible to the naked eye.
HELOS is as efficient as it is easy to maintain. Its 4L tank is easily filled with a pitcher or a water bottle.