Much louder than I thought
I bought 2 of these as part of the gold box deals.  The description says "whisper quiet" but it sounds like you have a floor fan in the room.  We decided to put it in our bedroom, but it was too loud so we put it in the master bath (even then I could hear it).  I guess I'm used to the Air-O-Swiss ultrasonic humidifier which made NO NOISE whatsoever, and we also place the humidifier in the master bath which is adjacent to our bedroom.  I'm not sure if the bedroom/bathroom smells better or is cleaner, but it was an interesting gadget to try out.
Rating: 3 stars