So I bought this air purifier a few months ago. I leave it on the auto setting where it detects the quality of the air and ramps up if it detects anything. I had a glass lit candle upstairs that cracked, broke and spilled everywhere. The wick caught a hand towel on fire and fire was spreading in my upstairs bathroom. While that was happening, I noticed my air purifier's light turn red and it ramped up. I didn't even smell smoke yet! The air purifier is what made me go upstairs and investigate. If I had never heard this air purifier getting loud out of nowhere, I would not have gone upstairs and my house would've burned down.

My mom has 2 cats but has horrible allergies. I researched a lot of different air purifiers and this one kept showing up in the top 5. It was even rated as the top affordable best purifier on one site.
What a difference it has made! Her allergy symptoms have improved 90% without meds. It's perfect.
Quiet.
Smaller than other leading or comparable purifiers.
User friendly.
Filter is easy to change (but the filter could be cheaper).
Would 100% recommend.

This air purifier really works. It has cut down on all the sneezing and coughing. I used to have an issue with dust around the electronics no matter how often I dusted. I don’t see dust anymore. Stopped smelling the musty smell of this old house. Best part, when my husband cooks bacon until it is charred, the purifier which I keep set to auto, got loud and changed to purple, proving there is too much smoke.

I really love this air purifier. I bought it because my son and I both have allergies. I live in an apartment and there's always dust that comes from the air vents when the heat comes on. The purifier sits slightly under one of the ceiling vents in my living room (which is fairly large). Since using it, I rarely see dust on my tables and my son and I don't sneeze and get stuffy nearly as much as before. It's quiet and lightweight so I can move it if necessary. There isn't anything I don't like so far. I even ordered extra filters so I won't have to worry about replacing the filter when it's time. I'm very happy with it.