Product Features:

• Single replacement filter for select Honeywell humidifier models; see description for compatibility list
• Removes minerals and pollutants from water
• Reinforced for maximum efficiency and longer filter life

Product Description:

Customer Reviews:
These filters last longer!
We run two humidifiers all year round here--it's dry in the desert--and these filters are MUCH better than the reg ones. It's worth a little more to get these. That blue stuff on the outside helps them last longer and filter the air better.

June 13, 2008 (Albuquerque, NM) | Rating: 5

These are way better than regular ones
I don't even know why they still make the non-airwashing filters. These really do take a lot of the dust out the air, but more importantly these filters holdup a lot longer than the ones do, and they really aren't that much more expensive. These filters are mislisted though, their real part number is HAC-504AW, the "AW" is for "Air Washing", because for the blue layer of filter material.

February 9, 2009 (Barberton, OH) | Rating: 5

Filter thickness reduced
For years I have been delighted with these replacement filters for my Honeywell humidifier. Unfortunately the manufacturer has recently made a product change that I find very disappointing, the filter's thickness has been reduced in half - while keeping the price unchanged. This of course then cuts in half the amount of wet area exposed to the air stream making the humidier less effective!

January 24, 2011 | Rating: 1