I noticed my air quality has been good so far and when I vacuumed near it, the numbers Increased as if it started working harder to clean the air. It is an appropriate size, not taking up too much room. It has a gentle hum, not an obnoxious loud fan noise. Very peaceful addition to bedtime actually! This has an app to download to keep track of air quality. Is compatible with an alexa device (really cool!)
Very pleased so far. I found it on sale which came at the right time, so very reasonably priced! I highly recommend! I will most likely be purchasing 2 more for each of the other floors in my home!