When I bought my used Kessil A360WE’s, I noticed the fans were really loud. One of them had a loud whine that sounded as if the bearings were going out. I cleaned them thoroughly which helped a lot (see previous thread) but I also wanted to upgrade the fans to see if I could cut down on the noise. I was able to remove the fan and replace it with a Noctua fan, which from what I understand is supposed to be one of the better small fans out there. The lights are much quieter now and don’t have the whine they previously had! Very happy with the results.