So funny that this is the first question I saw. The first sentence of my review is, "Don't let the cost of this product turn you away, its WELL worth it." and it is! My daughter has allergies really bad and has had them since she was born. I never had the use for a air purifier so I didn't have one, but she would sneeze and sneeze all night as a newborn even. I noticed she started getting congested and that's when I thought allergies. The meds helped, of course, but this air purifier was AMAZING. I actually went through two other purifiers before this one- and she STILL uses it, at almost 3 years old. My family has bought two and just love them! When you walk into the room, it is like a whole different atmosphere. It's easy to breathe, smells good, not too damp or too dry, either. I highly recommend this product.