Aviva

There is nothing like a good quality dehumidifier for the removal of mold, moisture and mildew from any home. Dehumidifiers are especially essential for a person suffering from allergies who wants to prevent mold spores from growing in their home, and for keeping humidity low enough to help keep dust mites away.

Active dehumidifiers have almost the same machinery as an air conditioner. While an air conditioner cools on one side and releases heat on the other side, a dehumidifier cools and then re-heats the air.

Dehumidifiers and Humidity Levels
Basically, a dehumidifier takes moisture out of the house by sucking in moist air, and pushing the dry air out the other side. This dry air then mixes with the moist air, making it a little drier, which in turn is pulled into the unit to become drier over and over again. The moisture collects in a pan and when the pan is full, the unit automatically shuts off. The dehumidifier is controlled by a humidistat which tends to respond to changes in moisture content and is absolutely necessary for efficient energy consumption.

While a dehumidifier can lower humidity levels, the extent to which it can be minimized depends a lot on your prevailing room temperature.