I had been in the market for a purifier for my room. I have cats and use the ceiling fan frequently so I was looking for something to help with the dander being kicked up all the time. I’ve been using it for almost a month and really like it. I feel that it’s made a big difference to my bedrooms air quality. The middle setting has a good ‘sound machine’ tone that helps me sleep too. The low setting is barely audible and great for during the day. I’m really happy with my purchase.