Evaporative humidifiers function by utilizing a fan to blow air more than a wet wick, pad, or filter. The water within the wick evaporates to the air, growing its humidity. This type of humidifier is self-regulating, as the speed of evaporation decreases because the humidity degree in the air boosts. https://nationwide-humidity-contr86429.blogsvila.com/38377640/humidity-control-for-dummies