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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.

I don't even know why they still make the non-airwashing filters. These Honeywell HAC-504 Replacement Filter for Honeywell Humidifiers really do take a lot of the dust out the air, but more importantly these filters holdup a lot longer than the HONEYWELL/ENVIRACAIRE HAC-504 Replacement Filter Pad 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.

This is a better filter than the ones that come in the box with the humidifier. The extra dust filter (the blue part) makes a big difference in the life of the filter.

It drives me crazy that stores sell humidifiers but usually not filter replacements. Do they think we're going to buy a new humidifier every time we need a new filter? I like being able to buy whatever filter I need at Amazon.

These filters are heavier duty than ones I previously used in other humdifiers. This is my second winter using the current humidifiers. I bought 4 of the same model all at once just so that I would only have to get one type of filter. This turned out to be a good idea and my home has decent humidity in winter.

In this purchase, I got ten filters and they arrived all at once, each in its own box. Since these are great filters, I think they are worth the price.

The main thing is if you have a humidifier requiring filters to get a good supply and be able to change them as needed. I think these filters would cost more in a store since the stores want to sell a new humidifier rather than keep you supplied with filter for the humdifiers that they have sold in the past couple of years.

Remember to keep the blue side facing out! (I made that mistake once.)

The Honeywell humidifier filter arrived 8 days after purchase and was immediately installed and used. It is performing well on a daily basis and absorbs much more water than its predecessor. I am very pleased with both the price and the product, thus would recommend this to others.

Brian

nice when you find a good selection of utilitarian stuff that you need to constantly replace at a good price, also shipping is fast. this is the 2nd time i bought this filter here.

As with the other reviewer, I had trouble finding this filter in stores. This filter works perfectly with my humidifier. I received it in a timely fashion with no damage to the box or filter. Definitely will continue ordering this item from Amazon!

I have received these items in a timely fashion. The products were as described with wear on the box but no damage to the filters. These filters are hard to find in our stores. So I was happy to find these.

Buyer beware! Allergy Be Gone does NOT sell the HAC-504-AW filter as listed on this page. They only stock the cheaper HAC-504 and they actually sent me the BestAir HW 500, a generic substitute. The Honeywell HAC-504-AW filter is a great product but only buy it directly from Amazon. Don't be fooled by the bargain price as I was.

Not much to say. These are the direct replacement filters and have worked in the past just fine.