This Shark Air Purifier is the REAL DEAL! It is so user friendly (you only have to change the filter every 8-12 months!!!) and lightweight that it is easily moved from room to room! It has made such a difference in the "cleanliness" of our bedrooms and common spaces. It is quiet and can be used while my kids sleep without disturbing them a bit. We use it mostly in the nursery and our children's rooms to purify the air and toxins and run it around an hour each room and it makes such a difference with the dust, my kids breathing, and smells! I wish I would have had this sooner!!