2-Pack Replacement HAC-504 filter for Honeywell - Compatible with Honeywell HCM-300T, Honeywell HCM-350, HCM-631, HAC-504AW, HCM-710, HCM-315T, HAC-504, HCM-630, HCM-300, Enviracaire ECM-250i

I received the 2-pack replacement filters for my Honeywell Humidifier a couple weeks ago. Put one in, and so far - so good. They seem sturdier than the Honeywell filters I've been using. The filter is working fine at this point, but I cannot comment yet on how long before I need to change. I know I had to change the Honeywell filters frequently. These replacements came in a 2-pack, which I liked. If they continue to work well, I will definitely purchase from this supplier again. Shipping was very quick and they came packaged well.

Please note, this review is for the exact model/company as follows: “UpStart Appliance Parts 2-Pack Replacement HAC-504” [see pic] This, I bought from the vendor named, “Certified Battery,” which is where I'll buy more from.The first problem with the original HONEYWELL unit is it has a seam in it, which seems to fail first, by separating there sooner than it should! This one does not have a seam, so I think that is a big advantage. I am positive that this unit gets more moisture into the air, than the original also. With the original, I could never get more than a 31% reading on my hygrometer. On similar types of cold days, I get 36% with this.I would strongly recommend the following for better health, and to get more life out of it:1. Every day or two, remove from unit and flip it over. This evens out the wear, or pollutants that it traps while humidifying.2. As another reviewer said, soak it in a 50/50 mix of water and cleaning vinegar for 20-60 minutes. Do this when it starts to get that crusty feel to it. Be gentle with it, because all of these are easily destroyed when wet.3. I use a water add in solution form Walmart which is EXTREMELY CHEAP. It’s about 4 bucks and is good for a couple hundred fillings.Good luck, and Happy Humidifying!! :-)LOL

This is the second time I have ordered these filters. I like them because they do a good job. What more can be said about a product except that it fulfills its purpose in an excellent way at a very reasonable cost.

Working fine, is getting floppy with several weeks of use, but still working. It's one of a two-pack, and I haven't felt that I need to replace it yet, so I'm satisfied. I soak it every other day or so, as instructed.

works great

This filter was much better than what came with the humidifier. With the original filter, I refilled the water tank every 3-4 nights. With this new filter, I refill it daily, as it goes through 2/3 to 3/4 of the tank, meaning it is doing a much better job of putting humidity into the air.

It works.

Omg. They actually work better than the originals. My room is so dry with zaps when you touch something. And haven't had a good hair day in winter for many years. These filters suck up so much moisture to push out the room is comfy and hair is not standing on end.