Emerson HDC-12 Replacement Moistair Wicking Humidifier Filter

I have an Emerson console-type humidifier that is allegedly capable of putting 13 gallons of water into the air in a 24-hour period. It came with filters from the factory that seem to stand up to this claim. The factory filters are pleated paper, not these fibrous, spongy type that are commonly described as "OEM" replacements.

These honeycomb, fibrous filters work well for a couple of days and then start to lose their ability to draw water up into themselves. Within two weeks they are hard as a rock and no longer wick. This is my second season with these things. I go through an entire case of them (8 sets of 4) in 3 months. The original-style filters, while more expensive, would last me almost 2 months and put much more water into the air (10 gallons a day on the 'medium' fan setting).

It is now difficult to find the pleated, accordian type filters but they are the only ones that work. My advice is to try to find the originals.