Product review (1 stars): Got worse with time
I got this item because it was supposedly quiet and powerful. It was very quiet at low speed and Ok at high speed, but I noticed that it had a little vibration at high speed - no biggie. As time went on it got louder and louder. Looks like the fan was never really balanced. It is incredibly loud now! Of course, it only got really bad after the return window had expired!. To make matters worse, the clip tabs for the grill in front are incredibly puny and snapped the first time I removed it, I can't believe I spent $100 on this and feel that I should be able to return it. No one else had this problem so I probably just got a bad one.