Bought this unit from a local home improvement store. Loved it on day one... Quiet and it used a lot of water meaning it was putting that water in the air as designed. By day two, the fan is now extremely loud on all three speed settings. So loud that we have to turn theTV way up and we can still hear it. It doesn't sound like it will last much longer. I can't comment on the filter life or longevity of the unit. I will be returning it tomorrow (day three). I would not recommend this unit and I will not buy another from this manufacturer.