Boneco Air-O-Swiss B205D Ultrasonic Humidifier

The Boneco Air-O-Swiss B205D is an ultrasonic humidifier that generates mist using high-frequency sound vibrations rather than a traditional heating element. A metal diaphragm vibrating at an ultrasonic frequency breaks the water down into a fine, cool mist. This process is highly efficient and operates much more quietly than evaporative humidifiers.

While you can technically use tap water, it is highly recommended to use distilled or filtered water in the B205D. Because ultrasonic humidifiers do not boil water, they will disperse whatever minerals are in the water into the air. Using tap water can result in a fine white dust (calcium deposits) settling on your furniture.

To clean the B205D, you should regularly empty the water tank and wipe the base with a soft cloth. For descaling, you can use a mixture of white vinegar and water to dissolve mineral buildup on the ultrasonic membrane. Boneco also sells proprietary water treatment solutions that help prevent scale and extend the life of the device.

Yes, because it is an ultrasonic humidifier rather than a warm-mist vaporizer, the B205D does not boil water, eliminating any risk of steam burns. The cool mist is completely safe to operate around children and pets. Additionally, the unit operates quietly, making it an excellent choice for maintaining comfortable humidity levels in a nursery.