This is a quality unit. The fan has 5 speeds with the right speed change, as well as an automatic setting that works properly depending on the air quality and time of day. Lots of air movement at maximum fan speed, definitely enough for a large bedroom. The filters are quick and easy to install and not too expensive to replace. The air quality LED ring is a handy feature, although it can easily be compromised by a humidifier. However, be careful if you have one in the same room. Definitely a reliable cleaner, glad to have it in my house. EDIT: I've been using it since posting a review a few months ago and noticing the other day that the filter is nearing the end of its life. I took the filter out to check and I could barely see any dust in the filter. I have a feeling the thing doesn't filter anything, just serves as an overpriced fan. Will do a few more tests
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