What are Dehumidifiers?

Basically warm air has more humidity than cold air. The higher the humidity in the air, the lower the rate of evaporation of sweat. Since sweat evaporation is an important mechanism for cooling the human body, high humidity increases discomfort in warm weather. Good HVAC systems not only cool the building but also remove excess humidity. Condensation dehumidification is a process used to remove excess moisture from the air in HVAC systems. When warm, moist air passes over a cooling coil, its temperature drops to the point where the air can no longer hold all the moisture it contains. The moisture then condenses in the form of droplets on the coil which can be drained. Typically this is accomplished by coils that use chilled water to cool the building, and condensation is removed as these coils are formed.