Product review (2 stars): Sadly disappoinmted
Filters became limp and floppy within two weeks. Rinsing with warm/hot  water removed  yellow crust buildup but apparently damaged filters in both humidifiers. This occurred with soft water which we double checked for hardness. Last season used two humidifiers with the filters that came with the 6000 series and they did fine for three months??? Spend the extra for the Honeywell brand because my wife need humid air. Will try again out of necessity.