Just bought and installed fan. As soon as you start fan you can hear electrical buzzing sound that get progressively louder as you increase the speed. To make sure it is not from motor rubbing housing, I've hold the blade with my hand and again, as soon as I start the fan, the electrical buzzing noise is there. Very annoying. I believe it is coming from internal transformer, because it sounds like electrical magnetic sound. I have no dimmer switch and my electrical wiring is perfect condition.  As a side note, in our house we  have three other Hunter fans that are about 20- 30 years old and they don't make this kind of noise. The beep that some customers reported has been eliminated and My fan didn't have that so called feature to beep each time you push any button. Light is good. Plenty of Air. Easy to install. Looks good.