A Guide to Replacing Filters in Coway Air Purifiers

One important aspect of keeping your Coway air purifier in optimal condition is to regularly replace its filters. In Malaysia, where air pollution levels can vary, it is crucial to ensure that your air purifier is equipped with clean and efficient filters. But how often should you replace these filters? In this guide, we will provide you with valuable information and recommendations on when and how to replace the filters in your Coway air purifier for effective and long-lasting performance.

A Guide to Replacing Filters in Coway Air Purifiers

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Choosing the Right Filters

HEPA Filters

When choosing replacement filters for your Coway air purifier, one of the most important types to consider is the HEPA (High-Efficiency Particulate Air) filter. HEPA filters are renowned for their ability to capture and remove 99.97% of particles as small as 0.3 microns from the air, including pet dander, dust mites, pollen, and mold spores. This makes them highly effective in improving air quality and reducing allergens in your home or office.


Another essential filter to replace is the pre-filter. Although commonly overlooked, the pre-filter plays a crucial role in the filtration process. Its primary function is to trap larger particles like hair, dust, and pet fur before they reach the HEPA filter. By preventing these larger particles from clogging the HEPA filter, the pre-filter helps to maintain its efficiency and prolong its lifespan.

Activated Carbon Filter

In addition to the HEPA and pre-filters, Coway air purifiers often come equipped with an activated carbon filter. This filter uses a process called adsorption to trap and remove gaseous pollutants, odors, and volatile organic compounds (VOCs) from the air. If your air purifier has an activated carbon filter, it is vital to replace it regularly to ensure optimum performance and odor control.

Identifying the Need for Replacement

Visual Inspection

One way to determine if your Coway air purifier filters need replacement is through a visual inspection. Remove the front cover of the purifier and carefully examine the condition of the filters. If you notice a buildup of dust, dirt, or debris, it is an indication that the filters are saturated and in need of replacement. Additionally, if the filters appear discolored or damaged, it is crucial to replace them as soon as possible to maintain the efficiency and effectiveness of your air purifier.

Air Quality Sensor Indications

Many Coway air purifiers are equipped with air quality sensors that monitor the level of pollutants in the air. These sensors provide valuable feedback on the air quality, indicating when the filters may need replacement. Keep an eye on the sensor readings, and if you notice a significant increase in pollutant levels or a deterioration in air quality, it is likely time to replace the filters.

A Guide to Replacing Filters in Coway Air Purifiers

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Ordering Replacement Filters

Official Coway Website

The official Coway website should be your first choice when ordering replacement filters for your air purifier. By purchasing directly from the manufacturer, you can ensure that you are getting genuine, high-quality filters specifically designed for your model. The website will have detailed information on each filter’s compatibility and specifications, making it easy to choose the right filters for your air purifier.

Authorized Retailers

If you prefer to make your purchase in person, you can also visit authorized Coway retailers in your area. These retailers have been authorized by Coway to sell their products, including replacement filters. By purchasing from authorized retailers, you can trust that the filters you are buying are genuine and will work effectively in your Coway air purifier. Check Coway’s official website for a list of authorized retailers in your region.

Online Marketplaces

Online marketplaces can also be a convenient option for purchasing replacement filters for your Coway air purifier. Websites such as Amazon or Lazada often offer a wide range of options, allowing you to compare prices and read customer reviews. However, it is important to exercise caution when purchasing from online marketplaces to ensure the filters are genuine and compatible with your specific air purifier model.

Replacing Filters

Preparing Your Air Purifier

Before replacing the filters, it is essential to prepare your Coway air purifier. Ensure that the purifier is turned off and unplugged from the power source. This will prevent any potential electrical hazards during the filter replacement process.

Turn Off and Unplug the Purifier

To ensure your safety, the first step in replacing the filters is to turn off the air purifier and unplug it from the power source. This precautionary measure will prevent any electrical accidents while handling the filters.

Removing the Front Cover

Once the air purifier is turned off and disconnected from the power source, you can proceed to remove the front cover. The exact process may vary depending on the model of your Coway air purifier, so consult your user manual for specific instructions. In most cases, you will need to gently pull or push a latch or button to release the front cover.

Removing the Old Filters

Once the front cover is removed, you will have access to the old filters. Carefully remove the pre-filter, HEPA filter, and activated carbon filter (if applicable), paying attention to their placement and orientation. Take note of how the filters are installed so that you can easily replace them with the new filters.

Installing New Filters

With the old filters removed, it is time to install the new replacement filters. Follow the instructions provided by Coway or refer to your user manual for guidance on the correct placement and orientation of each filter. Make sure the filters fit snugly and securely into their designated slots.

Reassembling the Purifier

Once the new filters are installed, reassemble the Coway air purifier by carefully placing the front cover back into position. Ensure that all the latches or buttons are securely fastened to guarantee the purifier’s proper functioning. Once the purifier is reassembled, it is ready to be turned on and provide you with clean, purified air.

A Guide to Replacing Filters in Coway Air Purifiers

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Resetting the Filter Indicator

Understanding the Filter Indicator

Coway air purifiers often feature a filter indicator that alerts you when it is time to replace the filters. This indicator serves as a helpful reminder, ensuring that you maintain the performance and efficiency of your air purifier. However, after replacing the filters, the filter indicator may need to be reset to accurately reflect the new filter’s lifespan.

Resetting the Filter Indicator

To reset the filter indicator, first power on the air purifier. Locate the filter indicator button or control on your particular model, which is typically labeled for easy identification. Press and hold the button until the indicator light blinks or changes color, indicating that the filter indicator has been successfully reset. Consult your user manual for specific instructions on resetting the filter indicator for your Coway air purifier model.

Proper Maintenance and Cleaning

Cleaning the Pre-Filter

Regularly cleaning the pre-filter is essential to ensure the longevity and efficiency of your Coway air purifier. To clean the pre-filter, remove it from the air purifier according to the manufacturer’s instructions. Gently wash the pre-filter under running water, using mild soap if necessary, to remove any accumulated dust, pet hair, or debris. Allow the pre-filter to dry completely before reinstalling it in the air purifier.

Vacuuming the HEPA Filter

HEPA filters should not be washed or cleaned with water, as it can damage the filter’s delicate fibers. Instead, use a vacuum cleaner with a brush attachment to remove dust and debris from the filter’s surface. Gently run the brush attachment over the filter, being careful not to apply excessive pressure. Regular vacuuming of the HEPA filter will help maintain its efficiency and extend its lifespan.

Replacing the Activated Carbon Filter Granules

If your Coway air purifier is equipped with an activated carbon filter, it is essential to replace the carbon granules periodically to ensure optimal air purification and odor control. Follow the manufacturer’s instructions for replacing the activated carbon filter granules, as the process may vary depending on the model. Typically, it involves removing the old granules and replacing them with fresh ones supplied by Coway.

A Guide to Replacing Filters in Coway Air Purifiers

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Extending Filter Lifespan

Using the Purifier Wisely

To extend the lifespan of your Coway air purifier filters, it is essential to use the purifier wisely. Avoid operating the purifier unnecessarily by only turning it on when needed or during times of poor air quality. Additionally, make sure to close windows and doors to prevent external contaminants from entering the space where the air purifier is used. This will reduce the workload on the filters and help them last longer.

Minimizing Air Pollutants

Reducing the presence of air pollutants in your environment can also contribute to extending the lifespan of your Coway air purifier filters. Regularly vacuum and dust your living or working space, clean bedding and upholstery, and reduce the use of products with strong odors or chemical compounds. By minimizing the number of pollutants in the air, the filters will be able to operate more efficiently and last longer before needing replacement.

Finding Professional Assistance

Authorized Service Centers

In the event that you encounter any issues with your Coway air purifier or if you require assistance with filter replacement, it is advisable to seek professional help. Coway has authorized service centers located in various regions, staffed with trained technicians who can provide expert advice and assistance. Contact your nearest authorized service center to schedule an appointment or inquire about any concerns you may have regarding your air purifier.

Contacting Customer Support

If you are unable to find an authorized service center near you or need immediate assistance, contacting Coway’s customer support is the next best option. Coway’s customer support team is trained to handle inquiries and provide support for their products, including guidance on filter replacement. Reach out to the customer support hotline or send an email to obtain the necessary assistance for your Coway air purifier.

A Guide to Replacing Filters in Coway Air Purifiers

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Common FAQs about Filter Replacement

How frequently should I replace the filters?

The frequency of filter replacement depends on various factors, including the air quality in your environment and the specific Coway air purifier model you own. As a general guideline, it is recommended to replace the pre-filter every 3-6 months, the HEPA filter every 12-18 months, and the activated carbon filter every 6-12 months. However, it is essential to refer to your user manual or check the filter replacement indicators on your specific Coway air purifier for the most accurate information.

Can I reuse or clean the filters?

No, Coway air purifier filters are not designed to be reused or cleaned. Attempting to clean or wash the filters can cause damage to their delicate fibers and compromise their filtration efficiency. It is crucial to replace the filters with new, genuine Coway filters as instructed by the manufacturer.

What happens if I don’t replace the filters?

Failing to replace the filters in your Coway air purifier can have several consequences. Over time, the accumulation of dust, pet dander, and other pollutants will impede the filters’ ability to effectively capture and remove particles from the air. This can result in reduced air purification efficiency, increased energy consumption, and potentially compromised air quality. To ensure the best performance and maintain clean air in your environment, it is crucial to replace the filters as recommended by Coway.

Can I use non-Coway filters in my air purifier?

It is highly recommended to use only genuine Coway replacement filters in your Coway air purifier. Non-Coway filters may not fit properly or meet the necessary quality standards, which could negatively affect the air purifier’s performance and potentially cause damage. Using non-Coway filters may also void the manufacturer’s warranty, so it is best to stick to the official replacement filters provided by Coway.


Proper maintenance and regular filter replacement are crucial for maintaining the performance and efficiency of your Coway air purifier. By understanding the different types of filters, identifying the need for replacement, and following the correct procedures for changing filters, you can ensure that your air purifier continues to provide clean, purified air for you and your family.

Remember to order replacement filters from trusted sources, such as the official Coway website or authorized retailers, to guarantee the authenticity and compatibility of the filters. Additionally, practicing proper maintenance, minimizing air pollutants, and seeking professional assistance when needed will contribute to prolonging the lifespan of your air purifier and maintaining a healthy indoor environment.