Honeywell Replacement Humidifier Filter A, 1 Pack, HAC-504

This product seems to be a better filter than the original filter that came with my humidifier. The cost was better than other online sources and I was pleased with the arrival time for shipping. I will be reordering and hope that it is available again when I need it.

Many users of any humidifier may be quickly shocked at a build-up of hard, crusty deposits on the filter. This is generally in direct proportion to the "hardness" of your water - especially calcium, etc. These minerals, suspended solids and chemicals such as chlorine will be revealed in this filter and quickly diminish its effectiveness. The term "filter" takes on a wide scope of definition as the PRIMARY function of this type of filter is to allow water to "wick" and provide as much surface area for the water to be exposed to air that is circulated within the humidifier - and thereby moisture is created and discharged by the unit into your room or house. By wicking through the filter media, it does filter "junk" in your tap water and thus significantly reducing - and almost eliminating discharge into the air. By maintaining a fresh filter you increase the amount of moisture that can be produced by the filter. A filter that has "hard - crusty stuff" over 10"% (by visual inspection) simply has limited ability to allow airflow to pick up moisture. You may be able to purchase a less expensive filter, but they just don't perform like this one does. After EHAUSTIVE research you can't buy a better filter for the money. If you have impurities in your household air, pets, smoking, seasonal pollen, etc. This filter now takes on another important important role as it does significantly filter the air on the general area where it is located. Look at the side of the humidifier at the vents where the air is sucked in - you may see some fuzz or chalky buildup. If you do this is evidence of probably 5-10 % of ACTUAL airborne contaminants that are also caught by this filter - therefore you are actually receiving an extra bonus of filtered air in addition to humidification. Although this product was designed PRIMARALY as a humidifier - it also does filter the air that runs through it - if the filter is not clogged up. Making sure the filter for any humidifier is maintained will maximize the both the primary and secondary benefits of your investment. >> The same goes for your dehumidifier. (Don't forget about your household filter for your furnace / AC unit)

These filters are well made and last longer than the discount ones. Well worth the price. They are made to allow maximum filtering .

Works like new filter.

This unit performs so well in my huge bedroom that I can sleep now all the way thru the night without waking up! The unit requires a gallon of distilled water every other day. The filter seems to be holding up well when I flip it over once a week. The unit is very quiet.

This is the wrong filter for the humidifier I purchased. It was pictured with the humidifier and made to look like the replacement. After receiving both via online order, that is when I found out and then had to return filter to store. The store didn't have the right filter (Filter E) and I had to order online from the manufacturer.

Bogus filter!!! Returned!!!

I rarely comment about products but this one is nowhere close to the picture shown and the quality is worse than the last time I bought it. There is no blue outer core which helped with filtering. I had it for 4 days and noticed horrible discoloration like it needs replaced already. Also if you don't turn it like it recommends there is an awful smell that comes from the humidifer fan.

this product sucks. our air in our apartment is so dirty the vacuum picks up so much its disgusting, so we thought getting this humidifier would help clean the air out. well we had the original that was just an all white filter that molded. bought a new one and after not even having it too long, its molded. very upsetting considering all the microbial and supposed this and that terms saying it wont mold.

The item I ordered looks like the photo with the blue anti-microbial outside covering. What I received was just a plain-Jane ordinary white filter without the blue covering. I was very disappointed after waiting more than a week for in-store pickup to receive the wrong item -which I promptly sent back. I don't know where the fault lies-with WalMart's shipping department or WalMart's website. I'll just have to try to buy what I want from someone else.