Product review (5 stars): Excellent product
Filters are heavy weight & clean up nicely if you don't leave them too long. Got these so I could rotate them. Hard water makes them gunk up quickly but adding some citric acid with every fill knocks it back @ 50%. This Vornado humidifier is an excellent product with a 5 year warrenty. Spending money for original filters will keep me from having to use that warrenty.