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PRINCIPLES OF DEHUMIDIFICATION
The Aprilaire
®
Dehumidifier controls the humidity level in your crawl space. A powerful blower inside the dehumidifier draws air into the
cabinet, filters the air and removes moisture, then discharges the dry air into the crawl space. Inside the cabinet, a sealed refrigeration system
removes moisture by moving the air through the evaporator coil that is kept colder than the dew point of the incoming air. The dew point is
the temperature at which moisture in the air will condense, much like what occurs on the outside of a cold glass on a hot summer day. The
condensed moisture drips into the dehumidifier drain pan, where it flows to a drain tube that routes it to the nearest floor drain or condensate
pump. After the moisture is removed, the air moves through the condenser coil where it is reheated before being discharged back into the space.
The air leaving the dehumidifier will be warmer and drier than the air entering the dehumidifier.
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