Heating, Cooling and HVAC

A dehumidifier is a household appliance that reduces the level of humidity in air.

Mechanical/refrigerative dehumidifiers
Mechanical/refrigerative dehumidifiers usually work by drawing moist air over a refrigerated coil with a small fan. Since the saturation vapor pressure of water decreases with decreasing temperature, the water in the air condenses, and drips into a collecting bucket. The [...]

The dehumidification process removes excess moisture from the air when the relative humidity is high. Reducing humidity levels is sometimes necessary for health reasons, but it also helps prevent rot, mold, and mildew on interior room surfaces. Air-conditioning systems can accomplish this function as they cool. Air conditioners remove moisture from the air, because as [...]