Unfortunately, our apartment in several rooms a mold and I'm allergic to mold spores. For weeks I have a stuffy nose when I am staying in the apartment. Outside hear the sniffles immediately. Since then, the air purifier at home makes his service with us, I have no more colds in the apartment. If the device is set to the lowest level, you can still bear the operating noise "on the side". Where air is moving, it's just not very quietly. The two higher levels we use only in rooms when we not stop there (eg at night in the living room). We are completely satisfied with the device!
