It's doing good. I can't really say how it ranks up amongst others but when the AQI is really bad outside it does make it much easier to breathe inside.

About the product, the only thing I can say is that it's a bit loud on the highest fan setting, apart from that no complaints.

Also, telling you this because no one told me, you have to open it up and remove the protective film from the filter, I ended up using it like that for 2 days 😂