Hello,
We love our filter. It is bigger than out pure zone (which is in our smaller rooms)so I feel comfortable that it will be able to clean my large living room. It’s quiet and works as nightlight too. I have noticed an increase in my electrical bill after starting to use both air filters along with your humidifiers but my throat and face aren’t dry like they were before our humidifier installation AND our floors are less dusty so I’m a VERY happy customer.