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  • The updated version of the HAC504 now features a new optimized filter design that maximizes moisture output.
  • Blue pre-filter layer helps capture large airborne particles from the air that passes through the filter.
  • Protec treated antimicrobial filter inhibits up to 99% of mold growth.
  • Antimicrobial treatment helps prevent the growth and migration of mold, fungus and bacteria on the filter.
  • Wicking filter captures minerals and pollutants from water and helps prevent white dust.

Fits Honeywell Humidifier Models:

  • HCM-300 Series: HCM-300T, HCM-305T, HCM-310T, HCM-315T, HCM-350, HCM-350B,
  • HEV-300 Series: HEV-312, HEV-355
  • HCM-500 Series: HCM-530, HCM-535, HCM-535-20, HCM-540, HCM-550, HCM-550-19, HCM-551, HCM-560
  • HCM-600 Series: HCM-630, HCM-631, HCM-632, HCM-635, HCM-640BW, HCM-645, HCM-646, HCM-650
  • HCM-700 Series: HCM-710
  • HCM-1000 Series: HCM-1000, HCM-1000C, HCM-1010
  • HCM-2000 Series: HCM-2000C, HCM-2001, HCM-2002, HCM-2020, HCM-2050
  • Also fits: Enviracaire Model: ECM-250i

Combating and removing various harmful pollutants and minerals, these Honeywell replacement filters have an exceptionally high compatibility range. They can be placed in nearly all Honeywell natural cool moisture humidifiers. The addition of Protec Antibacterial Treatment decreases the amount of growth and migration of mold, fungus, algae and bacteria in the filter. Ensure a premier and hospitable breathing environment for yourself and your loved ones with a Genuine Honeywell Filter.

The Honeywell HAC-504 Replacement Filter is an ideal replacement for natural cool moisture humidifiers and will greatly assist in the removal of minerals and pollutants from the water. The Protec antimicrobial treatment helps prevent the growth and migration of mold, fungus, algae and bacteria on the filter. Featuring an optimized filter design, the Honeywell HAC-504 allows for the maximum in moisture output. It is recommended that the humidifier wicking filter be flipped regularly for the very best result. Depending on water quality and usage, wicking filters should be replaced every 30-60 days.

Compatible does not mean comparable. For best performance, use only Genuine Honeywell Filters.

Compatible with Humidifier Models:

  • HCM300T (HCM-300T) Humidifier
  • HCM305T (HCM-305T) Humidifier
  • HCM305TCST (HCM-305T-CST) Humidifier
  • HCM310T (HCM-310T) Humidifier
  • HCM315T (HCM-315T) Humidifier
  • HCM350 (HCM-350) Humidifier
  • HCM350B (HCM-350B) Humidifier
  • HCM350BCST (HCM-450B-CST) Humidifier
  • HCM530 (HCM-530) Humidifier
  • HCM535 (HCM-535) Humidifier
  • HCM53520 (HCM-535-20) Humidifier
  • HCM540 (HCM-540) Humidifier
  • HCM550 (HCM-550) Humidifier
  • HCM55019 (HCM-550-19) Humidifier
  • HCM551 (HCM-551) Humidifier
  • HCM560 (HCM-560) Humidifier
  • HCM630 (HCM-630) Humidifier
  • HCM631 (HCM-631) Humidifier
  • HCM632 (HCM-632) Humidifier
  • HCM632TG (HCM-632TG) Humidifier
  • HCM635 (HCM-635) Humidifier
  • HCM640BW (HCM-640BW) Humidifier
  • HCM645 (HCM-645) Humidifier
  • HCM646 (HCM-646) Humidifier
  • HCM710 (HCM-710) Humidifier
  • HCM1000 (HCM-1000) Humidifier
  • HCM1000C (HCM-1000C) Humidifier
  • HCM-1010 (HCM-1010) Humidifier
  • HCM2000 (HCM-2000) Humidifier
  • HCM2000C (HCM-2000C) Humidifier
  • HCM2001 (HCM-2001) Humidifier
  • HCM2002 (HCM-2002) Humidifier
  • HCM2020 (HCM-2020) Humidifier
  • HCM2050 (HCM-2050) Humidifier
  • HCM2051 (HCM-2051) Humidifier
  • HCM2052 (HCM-2052) Humidifier
  • HEV312 (HEV-312) Humidifier
  • HEV355 (HEV-355) Humidifier
  • Enviracaire Mode ECM250i (ECM-250i) Humidifier
Product Details
Product Specs
UPC:
328785003574
MPN:
HAC504PF1
Category:
Humidifier Filters

If you are interested in ordering a large quantity of items you may qualify for volume pricing discounts. Volume Discount Pricing is a great way for customers to save big on large, bulk orders of most items available in our store. Please send a bulk order request to our friendly sales staff so they may create a quote and provide personal service for your order! You will receive a response within 1-2 business days and our office hours are Monday through Friday, 8am-5pm CST.

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Direct From Warehouse Pricing bulk purchase, wholesale pricing
HAC-504AW customer reviews

Overall Rating

4.9
3310 Reviews
5
3060
4
227
3
20
2
2
1
1
3287 customers recommend this product
Honeywell Humidifier Replacement Filter A Reviews
Judy P
December 16, 2024
Verified Purchase
Replacement filter

Have allergies and has helped to humidify my home especially while sleeping

Edna M
December 3, 2024
Verified Purchase
Humidifier Replacement filters work very well.

I've been using this type of filter for several years. The humidifier style they fit are easy to fill and work well. I have three of them, each in a separate room of my house.

Nathaniel B
December 1, 2024
Verified Purchase
FILTER A

It really works well my humidifier and gets the air clean

Amber O
November 15, 2024
Verified Purchase
Worth it to buy the Brand Name

I'm serious about my humidifers and have tried many brands. The Honeywell HAC-504 is the best by far - and I measure humidity levels with a hygrometer. I've also tried to use the replacement filters for this that are NOT the Honeywell brand, and they are simply not as effective.

Leia P
March 5, 2024
Verified Purchase
Used for several years

These seem to do the job with my honeywell humidifier. I use it in my kids' rooms.

Terri Baumgartner
February 27, 2024
Verified Purchase
Get the Right Product Fast

I'm so glad I found this site. So tired of running around looking for filters and not finding them in stock at stores. They work fine in my machines.

Dante D
February 14, 2024
Verified Purchase
Humidifier filter

Excellent product. Stays free of any mold or mildew and has excellent wicking action.

Joe G
February 8, 2024
Verified Purchase
Humidifier filters

Filters are of good quality and work really well.

Kristine B
January 22, 2024
Verified Purchase
A filters

A filters keep just the right amount of moisture in our flat. Great product.

Janet J
January 3, 2024
Verified Purchase
Great quality and service

Have been ordering these filters for many years, and as always, my order was processed and shipped promptly. The filters work very efficiently in my humidifier.

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