I admit that we already have 3 air purifiers at home, but I always think that we need to have one for each room. Especially now due to the allergy season with extremely high counts of pollen, you can never have too many air purifiers. This shark air purifiers with true HEPA filter doesn’t take too much space, yet it covers up to 500 SF! It not only cleans air, it also gets rid of smells. Not many air purifier does that! It’s not loud when it’s on. Overall, very happy with the shark air purifier!