High humidity levels in a building adversely affect occupant comfort, and air conditioning equipment performance. In many situations condensation can lead to damage of materials in storage through corrosion, deterioration, and other destructive processes. Other detrimental effects from high indoor moisture levels are growth of mold, mildew, and deterioration of building materials. Most building materials like concrete, wood, wall finishes, etc., are porous materials. In porous materials, moisture tends to migrate to the cooler material side under the influence of a temperature gradient.
