Must have for added peace of mind
There really is no way for me to know this helps but it adds to my peace of mind. It is very quiet but I can hear the fan just enough to know it is on. I have it in my living room, and have noticed less of a mildew smell coming from my chimney. One bonus is that my allergies have been less severe. That may have to do with me being outside a lot less, but I am sure this filtering some allergens out of the room can only help. Over all the additional peace of mind for myself and my family is well worth the purchase.
Rating: 4 stars