---
product_id: 401383398
title: "Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6)"
brand: "frequent filter"
price: "€ 93.05"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.de/products/401383398-compatible-replacement-for-honeywell-hac504-filter-a-germ-free-cool
store_origin: DE
region: Germany
---

# 6-pack of filters Interweaving locking pattern USA made quality Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6)

**Brand:** frequent filter
**Price:** € 93.05
**Availability:** ✅ In Stock

## Summary

> 🌬️ Elevate Your Air Quality – Because You Deserve the Best!

## Quick Answers

- **What is this?** Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6) by frequent filter
- **How much does it cost?** € 93.05 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/401383398-compatible-replacement-for-honeywell-hac504-filter-a-germ-free-cool)

## Best For

- frequent filter enthusiasts

## Why This Product

- Trusted frequent filter brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Breathe Easy:** Experience the purest air with our premium filters.
- • **Versatile Fit:** Compatible with a wide range of Honeywell models.
- • **Durable Design:** Engineered to stay upright, even when soaked.
- • **Longer Lifespan:** Enhanced treatment for extended filter life.
- • **Satisfaction Guaranteed:** 5-year warranty for peace of mind.

## Overview

This pack of 6 Honeywell HAC504 replacement filters is designed for optimal performance in various Honeywell humidifier models. Featuring a unique interweaving locking pattern for durability, these filters ensure a consistent flow of clean, cool mist. Manufactured in the USA, they come with a 5-year replacement warranty, making them a reliable choice for maintaining a healthy indoor environment.

## Description

Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6)

## Features

- Product contains 6 premium 2022 upgraded Honeywell Humidifier Filters for Filter A, HAC-504, HAC-504AW, and HAC504V1. The best wicking filters for Honeywell humidifiers.
- We manufacture our filters by utilizing a special interweaving locking pattern in order to keep the filter rigid and upright, even when soaking wet. Our competitors don’t do this and use cheaper manufacturing methods that leads to worse performance.
- Designed to fit the following Honeywell Humidifier Models: 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
- Our filters are treated to increase filter length but the exact time to replace the filter will vary based on your water and air quality. To increase filter length: use cold distilled water, flip daily, and soak in white vinegar. If you have hard water, the filter be stained yellow.
- We are a USA based company and we know we sell the highest quality and best humidifier filters on desertcart. We stand by our products with an unmatched 5 year replacement warranty and full satisfaction guarantee!

## Images

![Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6) - Image 1](https://m.media-amazon.com/images/I/71r4paLtzDL.jpg)
![Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6) - Image 2](https://m.media-amazon.com/images/I/91PZmIIVl3L.jpg)
![Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6) - Image 3](https://m.media-amazon.com/images/I/81of5Q-RIrL.jpg)
![Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6) - Image 4](https://m.media-amazon.com/images/I/81zZcm8n4VL.jpg)
![Compatible/Replacement for Honeywell HAC504 Filter A Germ Free Cool Mist Wicking Humidifier Filter. Fits HCM 350, HCM350w, HCM350, Quietcare Tower. Fits HAC 504, 504AW - (Pack of 6) - Image 5](https://m.media-amazon.com/images/I/81rZ5mLl7nL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: This filter for sure fits Honeywell 350w germ free cool mist humidifier?**
A: Sorry but I can't help. The filters did not fit the humidifier that I have (even though they were supposed to according to search criteria). As I already had filters in my humidifier, I waited until end of season to change the filter and of course the ones I ordered did not fit....not even close! Because I waited before changing the filters, I missed the deadline for return by 2 days and Amazon has yet to respond. I am not impressed.....

**Q: what are the dimensions please?  I need 6" high and 8" wide - thanks so much.**
A: Hello,

Thanks for your question.  These are 5.5" high and 8" wide.  Is there a particular model that you were hoping it fit?

**Q: does this fit a series HCM 6013i Quietcare?**
A: Mine is a 6000 series Quietcare and the filters ordered on Amazon are only half the size. My guess would be no.

**Q: What does the blue outer layer do? How are these filters different from the ones without the blue outer layer?**
A: Hello, the blue pre-filter is designed to catch large particles and add a bit of structural rigidity to make the filter stand more upright.

## Customer Reviews

### ⭐⭐⭐ 3.0 out of 5 stars







  
  
    Does wat it suppose to do
  

*by B***N on Reviewed in the United States on June 22, 2023*

Good filters

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Used these before
  

*by L***I on Reviewed in the United States on December 18, 2022*

I've used these before so ordered again. Make sure you flip the wick over when you add water to the unit. This will keep the wick from getting too much calcium deposits on the top.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Happy with the filters!
  

*by N***S on Reviewed in the United States on October 10, 2018*

We run our HCM350 humidifier almost 24/7. So I have a lot of experience cleaning and using the machine with filters. This filters hold up just as good, if not better than the others I’ve tried.I use normal unfiltered tap water. Flip the filter every time I refill the tank and soak the filter in cold water if the out layer is feeling dry when refilling.Make sure you clean the actual humidifier with a bleach / water mixture every so often. Keep in mind this machine is in water constantly. If you have mold, you have a dirty machine and it needs some TLC.Clean the actual machine and not just the filter. Scrub down the water tank and bottom tray with the bleach mixture and make sure you rinse all of it out with COLD water.About 3 times a month, I soak the filter in vinegar for 10 mins. Overtime, there will be mineral deposits and discoloration on the filter, thats normal, thats what the filter is actually filtering out of the water!Goodluck, the HCM350 is one of the best humidifiers out there and these filters work phenomenally with the machine. Will definitely buy more.

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-22*