HEPA filters are used in certain vacuum cleaners, air purifiers, HVAC systems, and other products that capture small airborne particles such as dust, pollen, pet dander, and more. Since these filters attract so much dirt, cleaning them is essential to improve the performance of your appliance! That said, cleaning HEPA filters is not as easy as putting them under the tap. A few filters are washable, and some can be ruined by water.
If you are wondering how to clean a HEPA filter, have a look at the manufacturer’s guide, which in all likelihood would be the most important piece of information. The appropriate cleaning procedure varies according to the filter and the device being used.
What Is a HEPA Filter?
HEPA stands for high-efficiency particulate air. A true HEPA filter is a mat of randomly arranged fibers that can trap very small particles from the air that passes through it. These filters are found in air purifiers, vacuum cleaners, air cleaning products, and your average HVAC unit.
Dust and other particles accumulate on the filter with time. A clogged filter can slow airflow and cause an appliance to work harder. Regular maintenance of a HEPA filter will contribute to maintaining the airflow and therefore the lifespan of a washable filter.
Can You Wash a HEPA Filter?
When it comes to the most common questions I see people asking, can you wash a HEPA filter? The answer depends on whether the filter is made to be washable or not.
Some HEPA filters are labeled as washable/reusable and can be cleansed by following the instructions of the manufacturer. Other HEPA filters are disposable or can not be washed. Cleaning these filters with water may either harm the filter material or, at best, cause the performance of filtration to drop or, worst, cause problems when you put them back inside the appliance.
Read more How Does a HEPA Filter Work
How to Clean a HEPA Filter Without Damaging It
If the filter is marked as washable/reusable, follow these general instructions.
Cleaning Instructions Warning: You should always follow the manufacturer’s instructions, as cleaning procedures may vary between products.
Turn Off and Unplug the Appliance
Remove the filter. Turn off the unit and unplug it before removing the filter. This stops you from accidentally turning on the machine while you’re working with the filter. If the filter is in a vacuum or air cleaner, find the filter compartment as the appliance’s manual instructs.
Remove the Filter Slowly
Slowly remove the filter to the air. If the filter is filthy, you might want to do it outside or at a place where you could make a mess.
Remove Loose Dust
Use isopropyl alcohol or acetone 10 minutes before painting if the manufacturer recommends. If the manufacturer recommends dry cleaning, gently remove the dust without washing. Rinse beneath clean running water till all the dust is removed.
Please do not apply too much force. Scrubbing, flexing, or rough handling may damage the filter media.
Shake the filter less vigorously so dust and debris.
Rinse Washable Filter
If it is a washable screen, rinse it with clean water. Manufacturers typically say to flush from the inside out so the debris is being pushed out and not further into the filter.
Do not use any household detergents, bleaches, or abrasive cleaning agents unless instructed otherwise by the manufacturer.
Let the Filter Dry Completely
Be Careful. This is one of the most important parts of the HEPA Filter cleaning instructions. Be sure the filter is fully dry before you reinstall it after cleaning.
It’s probably best to never put a wet or damp filter back into an electric appliance. The water may ruin the machine and cause mold or bad odors.
Complete drying may take a long time, according to the filter. Leave under a clean and airy place to dry.
Reinstall the Filter
When the filter is dry, check it for damage. If nothing is broken, reinstall it following the instructions of the appliance manufacturer.
Be sure the filter is in place, and that the filter compartment door is properly closed before operating the unit again.
How to Clean a Reusable HEPA Filter
Learning how to clean a reusable HEPA filter starts with determining if your filter is really made to be cleaned. They usually come with specific instructions in terms of maintenance from the manufacturer.
When it comes to reusable filters, the general rule of thumb is the following:
- Power down and unplug the machine.
- Carefully take out the filter.
- Remove loose debris using the appropriate method.
- Washing or rinsing is allowed if recommended by the manufacturer.
- Be sure that it is completely dry.
- Check for cracks, tears, or other damage.
- Put it back on properly.
Some washable filters can be rinsed off after a while, but with other washable filters there are different instructions. It’s better to follow the manufacturer’s recommended schedule rather than to wash the filter too much.
Tips for Better HEPA Filter Care
Proper care of HEPA filters can also contribute to sustaining the performance of your appliance. Here are a couple of tips to remember:
- Consult the appliance manual before you clean it.
- Check whether the filter is washable or if it’s disposable.
- Be gentle with the filter.
- Clean it in accordance with the allowed cleaning frequency.
- Do not use water unless washing is allowed.
- Let washable filters dry completely.
- Change the filter immediately if it is damaged.
- Have replacement filters on hand when you run out.
Final Thoughts
How to clean a HEPA filter correctly is a question you should ask if you’re interested in helping your air purifier, vacuum cleaner, or other device run more efficiently. But the main thing is to see if the filter is washable or not. You wash the filter.
When the manufacturer indicates that the filter is reusable, rinse and dry as directed. When the filter is not washable, you may either replace it as needed or try the suggested dry cleaning method. By performing the above maintenance and caring for your HEPA filter on a regular basis contact us today, you can avoid unnecessary harm to the filter and continue to effectively filter.
FAQs
Can a HEPA filter be washed?
You can only wash a HEPA filter if the manufacturer states that it is washable. Never wet non-washable HEPA filters – water exposure can damage the filter medium.
How often do I have to clean a HEPA filter?
The cleaning intervals depend on the device and type of filter. When the airflow becomes too low, clean or replace the filter according to the manufacturer’s instructions and watch for dust and airflow blockage on the filter.
Is it safe to wash a HEPA filter with soap?
Unless the manufacturer recommends otherwise, do not add soap or detergent. In general, water alone is sufficient for cleaning washable filters, but be sure to follow the instructions of the product.
How long does a washable HEPA filter take to dry?
The HEPA filter should be allowed to air dry completely before putting it back. Air drying time depends on the filter, temp, humidity, and air flow. Never put it back in while it’s moist or wet.
Can a HEPA filter be used after cleaning?
Yes, if it is indeed a reusable/HEPA filter and is still in good condition. Filters that are disposable or damaged should usually be replaced according to the manufacturer’s guidelines.
