I have bad allergies and after a recent sinus infection looked into air filters for my bedroom. This little one is great. I've slept so well since I got it. I've noticed a significant reduction in dust in general and when I wake up in the mornings this past week since I got it I've felt wonderful. I've been running it on medium and it does have some noise, but it's not much and personally it helps me sleep having the white noise. I am very happy with my purchase.