The IDW series is a heatless unit that produces atmospheric dew points of -22°F (-30°C) and below, and ISO 8573-1 moisture classes of class 3 and better. Heatless designs alternate between 2 desiccant columns and use a small portion of the dry air from the column in service to regenerate the other column, thus assuring continuous capability of providing dry air.
Regenerative desiccant drying systems provide the greatest level of drying capability amongst widely..