What are the Top 10 Quietest Portable Humidifiers? SKU Price Description 1. StadlerBL-006A $239.99 “William” by Stadler Form is an ultrasonic, warm mist humidifier that prides itself for being nearly silent. It is the quietest humidifier available and will successfully humidify your room without disrupting sleep habits. 2. BroksonicHM-27 $149.99 The “Middle” from Broksonic is … Continue reading What are the Top 10 Quietest Portable Humidifiers?