Informational Guide

How To Clean Coway Air Purifier Filter (DIY Instructions)

by Josh M

If you’ve noticed that there’s more dust and debris floating around your home, it’s time to clean your Coway air purifier filter. Not too sure how to clean a Coway air purifier? No worries, we’ve got step-by-step instructions along with tips to get you started.

When it comes to cleaning a Coway air purifier, it’s important to note that it has a pre-filter, deodorization filter, and a HEPA filter.

You’ll need the following cleaning materials to clean your filter:

  • A soft brush
  • Vacuum cleaner (just a small one for the filter)
  • Soft dry cloth

There aren’t many cleaning materials needed, and the above will just help with gently cleaning away any dust or dirt. If there is severe contamination, you can consider using a damp cloth. Just make sure you’re only using it for certain parts of the filter, such as the front cover.

How Coway Air Purifier Cleans

Related ArticleCoway Air Purifier Reviews

How To Clean Coway Air Purifier Filter (Step By Step Guide)

When it comes to cleaning the Coway Air Purifier filter, it’s exceptionally easy to do. Just follow this step-by-step guide, and you’re good to go. As a bonus, this guide also works for all models!

The brightly colored LED ring on your Coway Air Purifier filter will let you know when it’s time for a good cleaning. Here’s how you’d go about doing so:

  1. Unplug your device
    To start, you’ll need to make sure you’ve unplugged your filter and keep it away from any electrical outlets.
  2. Remove your pre-filter
    You’ll need to clean the pre-filter as that’s where models such as the Coway ap-1512hh Mighty Air Purifier and Coway Air Mega 150 filter the air. Luckily, the pre-filter is easy to remove, so simply pull the pre-filter from the air purifier, and you’re good to go.
  3. Wash the pre-filter
    As the pre-filter is washable, you can choose to rinse it with water or simply clean the dust with a dry cloth. If there’s a lot of dust, you can consider using a vacuum cleaner. If you choose to rinse it under water, make sure that your pre-filter is completely dry before placing it in the air purifier. Using it while wet can ruin the performance of your filter.
  4. Reinstall the pre-filter
    Once you’ve cleaned the pre-filter, push it all the way into the air purifier to install it. After you’ve installed it, simply close the front cover.

Note that you will not be cleaning the HEPA or deodorization filters. Once they need to be changed, the filter indicator light on your air purifier will light up accordingly.

Other than the pre-filter, you’re also welcome to clean the vent and vent grille, the air quality sensor, the front cover, and the purifier body with a soft brush or vacuum cleaner.

It’s important to remember that you should not be using soap on your Coway pre-filter. You should also not be using detergents containing organic solvents, bleach, or even chlorine. Finally, do not immerse your pre-filter in water.

Coway Air Purifier

How To Tell That Coway Air Purifier Filter Is Dirty?

There are a few ways to tell that your air purifier filter is dirty:

  1. Check for any discoloration or black spots. If there are, it’s time to get it cleaned.
  2. If you’ve noticed a sudden increase in allergies.
  3. If you’ve noticed that white clothes or sheets have suddenly changed in color and are getting dirtier than usual.

However, with Coway Air Purifier filters, advanced air purifiers like the Coway Airmega will let you know when it’s time to clean or change out any of your air purifier filters. Indicators will light up depending on what’s required and how much air has been processed.

You should be cleaning your pre-filter every two to four weeks and changing your filter every three to six months. If you have allergies or are an asthma sufferer, you can change your filter every 30 to 60 days.

How Often Should You Clean a Coway Air Purifier Filter?

You should be cleaning your Coway Air Purifier pre-filter every two to four weeks. When it comes to replacing the other parts of your air purifier, however, you would do so once every six months or about once a year.

It’s crucial to replace the filter as you’ll not only be preserving the longevity of your air purifier, but you’ll also be maintaining cleaner air, saving money, and even protecting the environment.

The reason why you’ve gotten an air purifier in the first place is to ensure that you’ve got fresh, clean and healthy air. By not cleaning your Coway Air Purifier filter, you run the risk of it clogging up with pollen, dust, pet hair, and even harmful particles that would cause more harm than good.

Related ArticleWhat Does An Air Purifier Do?

Common Coway Air Purifier Filter Questions

How long does a Coway AP 1512HH filter last?

Most filters last for about six months or so, but it’s highly dependent on how often you use your air purifier and if you’ve got pets at home. Your air purifier should let you know when it’s time to replace your filter.

What does red light mean on my Coway air purifier?

A red light means that the air quality is poor and many airborne particles that pollute the air have been detected. For this, you’ll want to toggle your air purifier to the highest air cleaning speed.

How do you turn off the light on a Coway air purifier?

Along the control panel, you’ll want to look for the Ionizer button. The text under this button should read “(LIGHT 3 SEC).” As your air purifier runs, press and hold down the ionizer button for a couple of seconds until the indicator light switches off.

How does Coway filter lifespan compare with other brands?

It really depends on how often you use the air purifier. On average, however, the filter will last about 6 months to a year. That’s about on par with the other brands.


As seen from the above, cleaning your air purifier filter doesn’t have to be a difficult task. Just make sure that you’re doing it frequently to ensure that you’re keeping the air in your home both fresh and clean.

Last Updated on January 9, 2023

Josh M

My name is Josh and I am obsessed with the HVAC industry. I created this website to help HVAC techs of all levels get the best out of their heating & cooling systems. I have spent thousands of hours studying air conditioners, heaters and home air products so you can learn & buy with confidence. Learn more about the team here.