This one is the, best I’ve found. I originally purchased one from another store. I looked it up again to purchase a second one for upstairs in my house where my dogs sleep. I always compare prices and Wayfair had the same one for a lot less. This air purifier is very silent, sometimes I double check to see if it on. It keeps the air fresh and eliminates any smells. I plan on getting another one for another area in my house.