Tap water generally has a certain level of conductivity. By inserting electrode rods into the electrode tank below the water surface and connecting to a power source, the water is heated and boiled into steam through the movement of ions in the water. The humidification capacity (steam production) depends on the water level in the electrode tank, which determines the immersion depth or surface area of the electrode rods in the water. The steam is evenly distributed through steam nozzles into the air handling unit or duct, where it is absorbed by the air to achieve humidification.