it's a good product, silent, easy to use, aesthetically great no complaints. I less allergy since I use it. By cons it has 2 negative points for me: 1 * I find it quite cumbersome, it must be installed at a distance behind and to the sides. 2 * There should be a child safety because my niece is attracted by the lights and buttons. The color of the light tells you when the unit is in the purification of air, blue, and it's perfect! Very satisfied with this product that I highly recommend for allergy sufferers like me
