Product review (2 stars): I am sad. It's getting expensive to buy these filters every couple of weeks...
This arrived on 6/3.  I used it on 6/5. It stopped working on 6/18, not even two weeks.  I can't find the original one that came w/ the humidifier.  I am sad.  It's getting expensive to buy these filters everyone 2 weeks.  I've tried another brand and it was the same thing.  Doesn't last more than 2 weeks.
I set the Honeywell Humidifier to MED fan and run 24hrs every other day.  But mostly 14hrs a day.