I've had this for almost a year now. I have two large dogs and a cat and I leave this on the auto mode most of the time. It keeps the air in the room so much cleaner. There is a noticeably less dust and hair in the air and the musty smell that existed in my older home is long forgotten. I did a lot of research and comparison to find an excellent but affordable air purifier and I am completely satisfied with this one. It hangs on the wall (after I had to buy the mount separately which was silly) and is very low maintenance. It definitely gets a work out from the animals and when the pollen of spring has jumped in, it still runs like a champ with a quick filter cleaning every once in awhile. The noise level is moderate when running on high, but doesn't interfere with conversation or TV watching.