ND85-IN Refrigeration Air Dryer is a High-Performance air dryer that can be used as an alternative to commercial dehumidifiers. It is ideal for drying out damp areas such as basements, bathrooms, or garages. It uses the principle of evaporation to remove water vapor from the air. This process takes place in two stages: firstly, the air passes through a heat exchanger where it absorbs heat energy from warm ambient air, then the cooled air passes over a series of cooling coils where it cools down before entering your room. The result is a drier atmosphere.