Evaporative humidifiers work by using a fan to blow air more than a wet wick, pad, or filter. The water during the wick evaporates into your air, expanding its humidity. This sort of humidifier is self-regulating, as the rate of evaporation decreases because the humidity level during the air boosts. https://nationwidehumiditycontrol08653.tblogz.com/nationwide-humidity-control-can-be-fun-for-anyone-51356795