why is it making noise
165747
Mine makes a medium loud click when the lights turn on or off, caused by the physical relays in these unit...that is normal. Other than that, mine is silent. I think any other noise would not be normal.
1616467
It's evidently not a sound audible to most humans. I can hear it. There's a very slight dry-rubbing sound caused by friction when it moves against different surfaces. I must have really good ears :P
593972
There is gentle hum- it's a slight motor sound mixed with a water evaporating sound- it's almost a whisper like the name lol. It's not bothersome to me. But it's not 100% silent.
970683
yes that noise happens when you zoom! It's the sound of the motor running. I haven't seen how to stop it.
748908
Yes it's a bit noisy. I have painted on that rubberized paint to stop the noise. Did the trick!
418863
It is probably too quiet. It makes more of a bee swarm sound rather than true white noise. It is very quiet.
920285
Mine is noisy too, a high pitch whirring sound. I wondered if mine was broken as well but it has great suction so I think it's suppose to sound like that :)
1184645
It's noisy. high pitch sound, but not unbearable. It's noticeable for sure, so try to place it far away from where you'll be sitting.
2224111
Can't answer why but I can maybe help. I put a 10 lb weight on the top and that seems to dampen out the noise.
58590
It makes a little noise but not too much. It is just a low hum in the background
389601
It is not really noisy, but you can kind of hear it a little bit, don't think it would be a problem.....just kind of a hummm.
2104963
I don't seem to have this problem, It does seem like a lot of noise at times but it has a lot of vibration.
1673615
It does make noise but its not that loud. I have it right next to my desk. when its not running it is silent.
1255825
It's should be, the noise is usually caused by different components being grounded to different areas. This should eliminate the feedback loop you are hearing.
2043795
it will make a slight hum but if its that noisy take it apart and clean and reassemble may help
710274
I'm thinking it is just a bit loud. I've had two of these and the longer you use them it seems to get louder. Make sure the center piece is snapped in correctly. It can be removed for cleaning and it's possible it's not seated properly. Hope this helps.
1562415
It's more of a whooshing noise. Similar to a case fan in a desktop. I'd say it's a bit louder than my PC if they were both at a similar distance.