Review on 🌬️ IOYIJOI Humidifier Filter: Compatible with Honeywell HAC-504, HAC-504AW, Filter A & More | White, 4pcs by Mikey Jackson

I've been using them for a few months and they fit me perfectly. I've never tried the Honeywell replacements with a blue pre-filter, but for me they work much better than the filter that came with the HCM-350 which, like them, was all white and didn't have a blue pre-filter. Get the filter that came with the humidifier for a month. I live somewhere where the water is harder than usual and within a week or two it was so caked up that not much water came out. Unfortunately, the original couldn't soak it in warm water for 20 minutes (no vinegar or chemicals) and just fell on itself. letter, and the official Honeywell replacement is $10.99 for 1) will still be firm, but I can Soak them for 20 minutes every week for up to 10 days and they still hold their shape. I can use them for a month even with the humidifier running 24/7, although most of the time it's running on the lowest fan speed. I'm very satisfied, there is no white dust and I can pet my cats without fear of electrocution without complaining about the cost. replacement filter.