Address P.O. Box 219 Batavia, IL 60510
Phone 800-452-1261
Fax 866-452-1436

Dry air in buildings and homes causes many health problems during the winter months. Symptoms of low relative humidity include dry skin and rashes, sore throats, and coughs. The amount of water vapor that the air can hold depends on temperature. Why does warm air hold more water than cold air?


  • Evaporation
  • Condensation
  • Vapor Pressure
  • Kinetic Molecular Theory
  • Ideal Gas Law