I have had this purifier in our three year old's nursery since she was under a year and we decided she could benefit from some white noise. I felt if I was running something for noise all night it might as well be doing something beneficial like cleaning the air!! It's very easy to maintain I buy a pack of replacement filters and replace every four months even though really it could go longer, but I error on the side of cleanliness. Other than that I just vacuum it down quick every few days when I vacuum her room. I keep it on low pretty much all day then kick it to high when she sleeps. Never had a problem with it. Her room is virtually dust free (even in dusty Arizona where we live). It always amazes me how much cleaner her room is than any other room in our home as far as dust goes... When we have another child this unit will be placed in their room as well! Perfect small size air cleaner you won't be disappointed!