Honeywell HAC-504 Filter A

OEM part number(s):

HAC-504HAC504HAC504PF1HAC504AWFilter A

Made by Honeywell. Replacement interval: Honeywell: replace every 30–60 days depending on water quality and usage (honeywellconsumerstore.com). FiltersFast spec: filter life 2 months..

Exact fit — verified

Fits 38 models

Across 1 brand(s): Honeywell. Examples: HCM-1000, HCM-1000C, HCM-1010, HCM-2000, HCM-2000C, HCM-2001, HCM-2002, HCM-2020, HCM-2050, HCM-2051, HCM-2052, HCM-300T, HCM-305T, HCM-310T… — the complete verified fit list is on this page.

Cross-brand equivalents

4 verified equivalent(s): BestAir HW500; Filters Fast HW500 R; DiscountFilters (AIRx) AXPPF-HW500AM; Protec (Kaz) WF2 — full table below.

Prices checked 2026-11-11: genuine from $16.95 + shipping at Honeywell Consumer Store (honeywellconsumerstore.com) · aftermarket from $22.99 + shipping at FiltersFast. Every price in the table below carries its store and checked date.

Buy on Amazon — HAC-504

Amazon is a buy link, not a price claim: Amazon blocks automated price reads, so its price is never quoted here.

Exact fit — all 38 verified models

Harvested from published manufacturer and retailer fit lists (sources at the bottom of this page). If your exact model is not listed, do not assume fit — check the number on your current part.

Honeywell (38)

HCM-1000

HCM-1000C

HCM-1010

HCM-2000

HCM-2000C

HCM-2001

HCM-2002

HCM-2020

HCM-2050

HCM-2051

HCM-2052

HCM-300T

HCM-305T

HCM-310T

HCM-315T

HCM-330T

HCM-350

HCM-350B

HCM-530

HCM-535

HCM-535-20

HCM-540

HCM-550

HCM-550-19

HCM-551

HCM-560

HCM-630

HCM-631

HCM-632

HCM-632TG

HCM-635

HCM-640BW

HCM-645

HCM-646

HCM-650

HCM-710

HEV312

HEV355

Aftermarket equivalents

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)

All verified prices

Kind	Store	Pack	Price	Shipping	Checked
Genuine OEM	Honeywell Consumer Store (honeywellconsumerstore.com)	1 filter, genuine Honeywell HAC504PF1	$16.95 + shipping item $16.95	Shipping calculated at checkout on the Honeywell store	2026-11-11
Aftermarket	FiltersFast	3-pack, Filters Fast HW500 R ($7.66 per filter)	$22.99 + shipping item $22.99	Free economy shipping on orders $99+ (lower 48); a fee applies below that	2026-11-11
More prices	DiscountFilters	2-pack AIRx replacement	$28.99 + shipping item $28.99	Free shipping on orders $70+ at DiscountFilters; a fee applies below that	2026-11-11
More prices	Ace Hardware	1 filter, genuine Honeywell HAC504PF1V2	$17.99 + shipping item $17.99	Ace store price; delivery terms at checkout	2026-11-11

Specs

Dimensions	Approx. 7.0 × 4.8 in (aftermarket listing; treat as approximate)
Replacement interval	Honeywell: replace every 30–60 days depending on water quality and usage (honeywellconsumerstore.com). FiltersFast spec: filter life 2 months.
Treatment / media	Genuine HAC-504 has a blue pre-filter layer; Honeywell markets its Protec-treated antimicrobial version as the HAC504 series (per Honeywell store copy).
Quantity note	One filter per change.