What filter/pad fits a Honeywell HEV-355 humidifier?
The Honeywell HEV-355 humidifier uses the HAC-504 replacement wicking filter.
Key takeaways
- Replacement part number: HAC-504 (Honeywell).
- This is a portable-humidifier wicking filter.
- Replace once per humidifying season, or sooner if it's visibly scaled or discolored.
- A cheaper aftermarket filter can fit the same slot - check reviews for real-world fit before buying.
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Also known as
The HAC-504 replaces (and is cross-referenced under) these part numbers: UFHAC504AM, UFWF2, HW500, 103527, HAC504AW, Wicking Filter A, WF-2, HW500AM, WF2, AXPPF-HW500AM.
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Frequently asked
What filter/pad fits a Honeywell HEV-355 humidifier?
The Honeywell HEV-355 uses the HAC-504 (Replacement Filter Wick for Honeywell Portable Humidifiers - HAC-504, WF2), a wicking filter.
Is the HAC-504 a wick or a furnace pad?
The HAC-504 is a portable-humidifier wicking filter, not a furnace water panel.
How often should I replace the HAC-504?
We don't have a manufacturer-listed replacement interval for the HAC-504 - a common default is once per humidifying season, or sooner if it's visibly scaled or discolored.
Should I buy the OEM filter or an aftermarket one?
The genuine Honeywell HAC-504 is the safe, exact-fit choice. A cheaper aftermarket wick or pad can fit the same slot too - check reviews for real-world fit and how well it wicks water before buying, since humidifier filters aren't independently certified the way NSF-listed water filters are.