Evaporative humidifiers perform by using a fan to blow air over a wet wick, pad, or filter. The water in the wick evaporates into the air, expanding its humidity. Such a humidifier is self-regulating, as the speed of evaporation decreases since the humidity degree while in the air will increase. https://nationwide-humidity-contr22109.nizarblog.com/38392868/the-basic-principles-of-nationwide-humidity-control