I bought this a few weeks ago, and I was hopeful it would do everything the description said it would.  My wife and I built a new home, and it is so dusty.  She says she can dust one day, and the next day, everything is covered in dust again.  This was really bad in our bedroom because our furniture is dark.  After a thorough cleaning of the room, my wife tells me there isn’t any dust, even after five days.  She is thrilled.  We do have the unit set up in the bedroom and have it at full speed during the day.  We are going to move it into the living room to see what happens then.  I will probably buy the smaller unit for that bedroom as no other room seems to get as dusty.