Durabasics Rigid Construction Honeywell Compatible Humidifier Filters, 4-Pack

Last updated date: January 18, 2022

DWYM Score

9.5

Durabasics Rigid Construction Honeywell Compatible Humidifier Filters, 4-Pack

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We looked at the top Humidifier Filters and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Humidifier Filter you should buy.

Update as January 18, 2022:
Checkout The Best Humidifier Filters for a detailed review of all the top humidifier filters.

Overall Take

Designed for Honeywell HCM 350 soft mist humidifiers, this four-piece value pack of high-quality filters features rigid paper construction to prevent sagging when wet. Their optimized filter designs work perfectly with your Honeywell humidifier.


In our analysis, the Durabasics Durabasics Rigid Construction Honeywell Compatible Humidifier Filters, 4-Pack placed 1st when we looked at the top 6 products in the category. For the full ranking, see below.

From The Manufacturer

4 Piece Value Pack: 4 premium humidifiers filters for your Honeywell HAC-504, HAC-504AW, and HAC-504V1 humidifier filters. Made from high-quality, durable material with an optimized filter design to maximize your compatible Honeywell HCM 350 filter moisture output. Rigid Construction To Reduce Sagging: Our replacements for Honeywell replacement Filter A and Honeywell replacement filter HAC-504 are constructed with rigid absorbent paper to improve our filter's structure once wet and reduce sagging. Compatible With Honeywell Humidifier Filter Model HCM350W & More: Fits HCM350W, HCM-350, HCM350, HCM-350B, HCM350B, HCM-350W, HCM-350B-CST, HCM-300, HCM300, HCM-300T, HCM300T, HCM-305T, HCM305T, HCM-310T, HCM310T, HCM-315T, HCM315T, HCM305BCST, HCM-450B-CST, HCM450BCST, HCM-500, HCM500, HCM-530, HCM530, HCM-535, HCM353, HCM-535-20, HCM53520, HCM-540, HCM540, HCM-550, HCM550, HCM-550-19, HCM55019, HCM-551, HCM551, HCM-560, HCM560, HCM-600, HCM600, HCM-630, HCM630, HCM-631, HCM631. Tips For Daily Use: For best results, flip your compatible Honeywell humidifier filter HAC 504 replacement daily and only fill humidifier tank with distilled water. Hard water degrades ALL compatible Honeywell humidifier filters and yellows them prematurely. Soak Before Replacing Your Compatible Honeywell Humidifier Filters Replacement Filters: Soak your Durabasics wick for Honeywell HCM350W filter in cool water before replacing to ensure uninterrupted moisture output.

Expert Reviews

User Summarized Score

9.0
2,664 user reviews

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An Overview On Humidifier Filters

Humidifiers add moisture to the air using water to help you breathe better. The filters inside them remove minerals and other pollutants from that water, helping to prevent mold, bacteria and algae growth and migration.

Most humidifiers you see today use cool mist ultrasonic technology, which uses ultrasonic sound vibrations. Regular cool mist humidifiers use high-speed rotating disks. But matter what kind you have, the EPA recommends cleaning it every third day.

Humidifiers cannot do their jobs without clean, working filters. These inexpensive, replaceable filters can be made from clay, paper and metal, holding water as the air blows across their antimicrobial coatings. During this process, mineral deposits and impurities get removed, and the coating prevents the growth of bacteria, viruses and mold from growing on the filter.

These filters do not have expiration dates on their packages, but they will last no more than three to four months once you start using them. Filters become clogged and brittle over time and eventually cannot hold water. They can also become contaminated by impurities from the water.

That is why it is so important to change them at the start of every heating season when they are in use. You might even want to do it more often if the air in your house is especially dry.

When it comes time to replace your humidifier filters, you will have to find ones that fit with your brand and model. One manufacturer might make several humidifier models, so you’ll have to look at yours for this information. Other companies make compatible humidifier filters that might be usable with yours, but read the product reviews to check what others have to say.

The Humidifier Filter Buying Guide

  • Hard water can degrade humidifier filters. Unless your humidifier’s package reads differently, filtered or distilled water is best for most models.
  • To clean the humidifier, empty the tank and wipe all surfaces dry with a clean microfiber cloth.
  • Some humidifier filters can discolor slightly over time, and this is normal.
  • Your humidifier filters may need to be soaked in water before using.
  • Set a reminder to replace your humidifier filter every three to four months.
  • Never pour essential oils into humidifier water tanks.