Wow! I'm really surprised to hear the trouble you've been having with a Casablanca fan. We bought one for our house (specifically the kitchen) 17 years ago and it is still running like a charm! We have NEVER EVER had 1 second of trouble from it - AND - we live in the South where it is used constantly. We have it on 24 hrs a day, Spring, Summer, and Fall. Occasionally in the winter if I am cooking alot. It is as quiet today as the day it was installed. It sounds to me like the other folks are right - that the hum you are hearing has to do with the way it is wired.