Bought this fan in the hope that it would brawl less than a conventional fan. It was certainly not the case. The whining considerably more, and the air flow was almost unrecognizable. At the highest setting (10) so whining this fan so much that I had to raise your voice to talk (fan stood 2 meters), and it moved less air than my cheap little plastic fan to the lowest setting.
Steer far away, these fans are just crazy. Just consider if you have too much money and needs a good appearance furniture.