Had this installed about a week ago.  If is very powerful and does a great job sucking up smoke, steam etc.  Took me a little time to get use to the touch buttons.  The only real confusion I had is that the fan must be on before the clock button works.  This makes sense when you realize the clock button normally sets a timer for when to turn off the fan.  But I was trying to set the clock.  The LED lights are very bright and useful.