The Dehumidifier has an Individual function to condense moisture. The tendency of moisture always is to flow from the higher moisture zone to the lower moisture zone. Thus the moisture flows between the substances in the room and the space. The function of the Dehumidifier is to reduce the moisture content in the space. During the process of Dehumidification, the space becomes gradually dry, and accordingly, moisture flows from the materials to the space. At the same time, moisture infiltrates the space through structure, crevices around doors, windows, ceilings, partitions, and while opening the entry doors as the vapor pressure is higher outside than inside the room. Further moisture will also be added to the space by hygroscopic substances and persons working in the space.