I don't know the Blueair, but I can tell you that I'm very happy with the Xiaomi. I bought it in November 2013, still under the name "Elite" at the time. Since then it has been in constant use without any problems. I haven't had to change the filter yet, but I do clean the outside of the fan and the area around it from time to time. A blessing with a cat in the house and would buy it again at any time :)