Evaporative humidifiers operate through the use of a fan to blow air in excess of a damp wick, pad, or filter. The h2o during the wick evaporates into the air, growing its humidity. This kind of humidifier is self-regulating, as the rate of evaporation decreases because the humidity stage from https://damienbmvdk.blogzet.com/humidity-control-for-dummies-52920227