All About Dehumidifiers

It's not the heat

Home air dehumidifiers remove moisture from the air.  As air cools, it loses its ability to hold moisture; dehumidifiers take advantage of this property by causing water to condense out of the air onto a cold material.  Just as water will form on a frosty glass on even the hottest day, dehumidifiers use electrical current to create a cold surface that drains moisture out of the air in a room.  A vent takes air in and a blower distributes the conditioned air back out. 

Most home dehumidifiers function using a mechanism similar to an air conditioner that has both hot and cold coils in the same unit. A fan draws the room's air over the cold coil of the air conditioner to condense the moisture, which drips into a designated receptacle. The dry air then passes through the hot coil to return it to its original temperature before being expelled.  The amount of moisture in the resulting conditioned air can be monitored and controlled by the unit.

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