Home › Parts › Honeywell HAC-504 Filter A
Honeywell HAC-504 Filter A
OEM part number(s): HAC-504, HAC504, HAC504PF1, HAC504AW, Filter A · Made by Honeywell · Evaporative wick / filter
Verified prices (checked 2026-11-11)
| Option | Price | Store & shipping |
|---|---|---|
| Genuine (OEM) 1 filter, genuine Honeywell HAC504PF1 | $16.95 | Honeywell Consumer Store (honeywellconsumerstore.com) Shipping calculated at checkout on the Honeywell store · Checked 2026-11-11 · source |
| Aftermarket 3-pack, Filters Fast HW500 R ($7.66 per filter) | $22.99 | FiltersFast Free economy shipping on orders $99+ (lower 48); a fee applies below that · Checked 2026-11-11 · source |
| Also checked 2-pack AIRx replacement | $28.99 | DiscountFilters Free shipping on orders $70+ at DiscountFilters; a fee applies below that · Checked 2026-11-11 · source |
| Genuine (OEM) 1 filter, genuine Honeywell HAC504PF1V2 | $17.99 | Ace Hardware Ace store price; delivery terms at checkout · Checked 2026-11-11 · source |
How to read this: the lowest verified price above is the headline even when it is not Amazon. Amazon is the buy button because it is this site's affiliate route; its price is not quoted because Amazon blocks automated price reads.
Exact fit — models that take this part
Honeywell HCM-350, Honeywell HCM-350B, Honeywell HCM-530, Honeywell HCM-535, Honeywell HCM-540, Honeywell HCM-550, Honeywell HCM-710, Honeywell HCM-300T, Honeywell HCM-310T, Honeywell HCM-315T, Honeywell HEV312, Honeywell HEV355
How many per change: One filter per change.
Specifications
| Replacement interval | Honeywell: replace every 30–60 days depending on water quality and usage (honeywellconsumerstore.com). FiltersFast spec: filter life 2 months. |
|---|---|
| Dimensions | Approx. 7.0 × 4.8 in (aftermarket listing; treat as approximate) |
| Treatment | Genuine HAC-504 has a blue pre-filter layer; Honeywell markets its Protec-treated antimicrobial version as the HAC504 series (per Honeywell store copy). |
Equivalents and cross-references
| Brand | Part number | Note |
|---|---|---|
| BestAir | HW500 | BestAir equivalent for HAC-504 fitments |
| Filters Fast | HW500 R | FiltersFast replacement; replaces HAC-504 / HAC504AW |
| DiscountFilters (AIRx) | AXPPF-HW500AM | Listed as replacing both HAC-504 and WF2 |
| Protec (Kaz) | WF2 | Cross-listed as interchangeable with HAC-504 by DiscountFilters (AIRx listing replaces both numbers) |
Sources
- https://www.honeywellconsumerstore.com/store/products/honeywell-hac-504aw-humidifier-replacement-filter-air-washing-prefilter.htm
- https://www.filtersfast.com/p-filtersfast-hw500-r-humidifier-wick-filter.asp?mod=147031
- https://www.discountfilters.com/humidifier-wicks-pads/airx-axppf-hw500am-6-pack/p111160/
Full record, including descriptor data for every model, is in the open dataset: /data/parts.json.