I love reading the reviews from people who complain "it's too loud".  Powerful fans make noise, plain and simple!  It has 3 power settings, try a different one.  You only use it when you're cooking!?!?  This vent quickly removes cooking odors and excess heat.  The grease does seem to accumulate quickly, so you have to keep the filter clean (throw it in the dishwasher).  But this only proves how powerful and effective the unit is.  Complaining about "too much noise" is like complaining that the stove generates too much heat.  No heat, no cook.  No noise, poor ventilation.  I would like to know if you can use the ductless filter system even if you have the unit venting outside so that more of the grease would be captured by the charcoal filter system?