4 Pack HAC-504 Humidifier Wicking Filter Compatible with Honeywell HCM-350,HCM-300T, HCM-600, HCM-710, HCM-315T,HAC-504 and HAC-504AW Cool Mist Humidifiers, Replacement Filter A

I change my filter much more often now because this is a great price. Remember to turn the filter over every time you fill it.

I like the idea of anti-bacteria filters seems to work fine I run it constantly for the winterProbably will change more often

You can't beat this price for these filters. Even if they don't fit perfectly, you can trim them down. Last long and put off a good bit of moisture.

So far so good. The convenience of ordering on Amazon and not having to search in a store was great for me.

I recently purchased a room humidifier and these replacement filters are the perfect fit and will do the job when I have to change them.

I got these for my Honeywell HCM350W Cool Mist Humidifier. They fit perfectly and, more importantly, perform perfectly. They seem "heftier" than the OEM ones. I'm no humidifierologist but that seems like a good thing.One trick to maximize service duration: I keep two filters in rotation. One is in use inside the humidifier (as one would expect) and the other one is in the filter gym, working out and getting ready to be deployed. When the in-service humidifier gets too gunkified, the filter in the gym (my closet) is inserted in the humidifier. The replaced filter then gets a diluted vinegar (1/2 cup vinegar, 1.5 gallons water or whatever will completely cover the filter) bath for several hours. This removes all (most) of that gunk. Rinse with water, let air dry, and send it to the gym/closet. In a couple of weeks when the humidity level isn't what you'd expect, repeat the swap.I've been doing this all winter and two of the four filters have been plenty sufficient. I haven't touched the other two yet and the other two have minor signs of wear but are still performing beautifully. I'm able to keep the humidity level I desire without compromise.

A lees expensive way to go and just as good as a manufacturers product.

Product was fine. Perfect.

I use this item for a humidifier