What is a steam humidifier?
Humidification by steam is quite possibly the oldest form of humidification. The principle is simple: by heating water up to the boiling point, it will evaporate. Contrary to other forms of humidification, all the required energy is directly taken from the power supply (electric or gas).
This often sets the stereotype that steam humidifiers are inefficient. In reality that is actually not the case. This is because there is no adiabatic cooling method involved in this way of humidification. In addition, no further water treatment is needed because any and all bacteria that are present are killed by the increase of temperature.