A dehumidifier is used to dry a water damaged building, carpet, furniture or contents by drawing in moist air, removing water vapour from the air and then pushing out dry air. A water damaged building or a building containing water damaged carpet, furniture or contents will have a high humidity level. A dehumidifier works by reducing the humidity level and creating an ideal drying environment. Combined with the use of specialized fans (known as air movers) to control the movement of wet and dry air, the drying of a building, carpet, furniture or contents can be achieved quickly and effectively.