During operation, ultrasonic humidifiers may produce a whistling sound. My Stadler Form humidifier operates on the natural basis (wet filter + fan). Both are below 30dB, according to my measurement. But, the Stadler Form's lower frequency noise means that it doesn't bother my ears as much. While I can't comment on the Xiaomi humidifier's performance just yet, I should note that it still features a UV lamp for disinfection. (in a number of years) Superb skin hydrator. Constantly exerts tremendous effort. Never let me down. Over time, the plastic had turned yellow, as it does on all cheap electronics. Voice on/off is the only smart feature I actually use. Once at full power, the hygrometer shows exactly when to turn off the device, making it more convenient than adjusting the intensity manually.
LEVOIT Top Fill Cool Mist Ultrasonic Humidifiers for Bedroom with Essential Oils, Smart Control for Baby Nursery Kids and Plants Indoor, Quiet and Easy to Clean, BPA Free, 3L Capacity, White
3 Review
💧 LEVOIT Ultrasonic Cool Mist Humidifier for Bedroom and Plants with Essential Oil Tray, 4L Capacity, Dual 360° Rotation Nozzles, Quiet Operation, Handle Design, Auto Shut Off, Blue - Lasts up to 40 Hours
5 Review
🌬️ Vicks Filter-Free Ultrasonic Cool Mist Humidifier: Ideal for Nursery, Bedroom, and Medium-sized Spaces
9 Review
LEVOIT Humidifiers Ultrasonic Humidifier Whisper Quiet
3 Review
Stay Cool With COMFYHOME 3-In-1 Portable Air Conditioner - Efficient Evaporative Air Cooler For Home And Office
11 Review
Split system Roda RS-AL09F / RU-AL09F
37 Review
COMFYHOME 3 IN 1 Portable Evaporative Air Cooler - 60°Oscillation, 12H Timer & Remote, Windowless Room AC For Bedroom Home Office
11 Review
UL Certified 120V Unheated Awoco 48 Super Power 2 Speeds 1650CFM Commercial Indoor Air Curtain With Free Door Switch
23 Review