Honeywell

Honeywell Replacement Wicking Filter A 3 pack White 3 Count

1404+ bought in the past month

$39.99

About this item

  • HUMIDIFIER REPLACEMENT FILTER: HAC504 Filter A works with evaporative Honeywell humidifiers in the HCM-350, HEV355, HCM-710 & HCM-315/HEV312 model series. Captures minerals in the water in your humidifier & helps reduce white dust.
  • HONEYWELL FILTERS: Genuine Honeywell replacement wicking filters use a patented design that helps inhibit 99.99% of growth & migration of particles on the filter. A blue pre-filter layer helps capture large particles.
  • HONEYWELL HUMIDIFIERS: Humidity levels in your home between 40-60% can make the air feel warmer & improve your breathing comfort, sleeping, nasal congestion & dry skin. Dry air can cause static electricity, damage wooden furniture & irritate health issues
  • HUMIDIFIERS FOR BABIES, CHILDREN, ADULTS: Humidifiers diffuse moisture into the air, and many find that a humidifier for the home, bedroom or nursery becomes an essential part of a good night’s sleep when the air is dry or when sick
  • HONEYWELL QUALITY: Improve your air quality & neutralize odors for a clean & healthy breathing experience year round with Honeywell replacement filters for air cleaners, purifiers & humidifiers.
$39.99

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Product details

BrandHoneywell
ColorWhite
Operation ModeEvaporative
Product Dimensions5.75"D x 5.75"W x 9.25"H
Item Weight0.17 Kilograms

Technical specifications

brandHoneywell
colorWhite
operation_modeEvaporative
product_dimensions5.75"D x 5.75"W x 9.25"H
item_weight5.9 ounces
room_typeBedroom
model_nameReplacement
included_componentsHumidifier
control_methodTouch
shapeRound
upc328785003260
unit_count3.0 Count
global_trade_identification_number00328785003260
manufacturerKaz
item_model_numberHAC504
best_sellers_rank#1,132 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #8 in Humidifier Replacement Wicks
care_instructionsChange filters after 30-60 days, depending on water quality, Flip filter regularly for best results
assembly_requiredNo
number_of_pieces3
batteries_requiredNo

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Customer reviews

4.66,562 ratings

Customers say

Customers find the humidifier filter works well and is of good quality, with one noting it performs better than the original model.

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Quiet and Clean Humidity Boost

dragon6473β€”November 5, 2025

I bought these replacement filters because the minerals in my evaporative humidifier were leaving a chalky white dust on surfaces and I wanted an easier way to cut it down. I installed Filter A in the humidifiers listed in the description, and swapping it in was simple. The blue pre-filter layer catches larger particles, and the wicking material seems to keep the moisture steady without constant fiddling. What stood out was how much cleaner surfaces looked and how the mineral buildup around the unit slowed down. The 3 pack is handy because I can rotate replacements and keep a fresh one on hand. One small note is that you should verify exact model compatibility and replace the filter on a regular schedule to maintain performance. Overall I would give it 5 stars for reliable performance and quiet operation. Read more

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OEM is best, don't leave them wet.

Dannyβ€”December 31, 2025

These seem to be higher quality than the 3rd party ones you can find at a lower price. These are thicker (which means they'll last longer) and the blue filter keeps out dust that can contribute to mold growth. A tip for anyone encountering mold growth, run the humidifier until all of the water is empty. Do not let water sit without the fan running. The constant evaporation makes it difficult for mold to grow. Also toss them when they are crusty and discolored. That's the deposits from your tap water and those won't hold water so the wick becomes less and less effective over time. I never clean my wicks, I just observe how much water is left in the tank each day when I fill it up. A fresh filter will easily drain the tank in about 8-12 hours. An ok filter will drain it in 24 hours. A bad filter drains it in 48 hours. I use an bacteriostatic in the water tank to help prevent any growth. I also clean out any accumulated dust about once a week. I recently got an RO water filter which will definitely help prolong the wick. Read more

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Best Longevity and Durability

Maccelerateβ€”September 20, 2024

The blue outer gives me pause, as it's some kind of plastic, but the upside is that these last longer than the single-layer paper wicks (filters, as some call them). The KEY is to CLEAN them weekly! Obviously, all houses are different, but I can keep one going for about two to three months, and they run 24/7. I have three Honeywell humidifiers going through the winter, and we have used the blue filters for at least two years now. I don't want to go back to the paper-only wicks, even if they're cheaper. But cleaning is crucial, and either type will last longer with maintenance. My goal is to change the wicks once per season. Occasionally, I have to put in a third toward the beginning of spring if we keep using the furnace. How to keep 'em clean: Take the top off, take the tray to a full sink (or clean bucket,) put a tablespoon of bleach in water, drop a wick to sit in the treated water for 10 minutes, gently slosh it around, then empty/refill the receptacle with fresh water (or gently rinse under running water.) Rinse the wick thoroughly. Put it back in the tray and humidifier with a full tank of water, and it's good for another week, sometimes two. I check them weekly, for sure, and more often toward the end of 2 months. The tray needs to be cleaned at the same time. We have soft water, but it's still pretty mineral-y, so everything gets crusty. Nothing is going to last forever, but with a little maintenance, cleaning costs a lot less than chucking a good wick every two weeks, or installing a whole-house humidifier. Plus, I can loan one out to the kids for college dorms. Some years I have more problem with mold than others, but cleaning is critical to spending less on wicks and putting a bit less load on the garbage chain. I also like the light "pool" smell I get for a day after a cleaning. Sad to see the prices skyrocketing in the last year ('23/'24.) Was hoping to see a drop, but all the more reason to clean them to keep replacement costs down. Read more

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Replacing Your Filter is Essential!

Mattβ€”May 13, 2021

If you have any humidifier that utilizes a filter it is essential to replace it regularly for continued proper functioning. While you could use it without a filter, there is a reason they have filters and that is to improve the quality of the air being circulated in your room. Nearly a year ago I bought a black Honeywell HCM-350 unit on Amazon. After about a month of nightly (8-12 hours) use on the highest setting I noticed a slightly different smell in my room (not bad, just different) and noticed that the water reservoir was not emptying as rapidly as it had initially. This was because the filter was in need if replacement. Over the month of use the filter hardened up and was discolored. As a result, less water was able to pass through the filter meaning less moisture was being pumped into my air, and presumably the air that was getting out was not as clean as it could be. Replacement is incredibly simple and after the first night I noticed an immediate improvement in the functionality of my humidifier. The water reservoir was significantly lower and my room smelled a bit fresher as well. In my opinion, if you are buying a humidifier unit like these that utilize a filter then you really should be prepared to regularly replace the filter. I know it can be a bit off putting to spend $10 every month but it is worth it. There are lower quality humidifiers available on Amazon and elsewhere that do not use filters, so you may consider those for a cheaper option. But if you want to step up to slightly higher quality or if you are very sensitive to air quality then you should be prepared to change the filter AT LEAST every month, maybe even more frequently if you are very sensitive. Read more

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They work

Ron ellisβ€”February 20, 2025

These filters improved the performance of the original filters in my humidifier by a measureable margin. I don't normally write reviews but these work enough to compel this review. Read more

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I like

Roger Bβ€”October 14, 2025

Can't beat the real thing try others and they don't last. don't forget to flip they when adding water Read more

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