How To Clean Hepa Filter Air Purifier?

And what is #1 Mistake to avoid with cleaning a Hepa filter

After huge thought and deliberation, you’ve done your research and have brought HEPA filter air purifier to get high-quality and pollutant-free air. Now all you have to do is plug it in and allow it to perform.

But is it implies that your job is done?

No, you’re wrong!

You should clean your HEPA filter purifier to work well, and this is important if you want to ensure sound health for your family.

But the question, how to clean hepa filter air purifier? You can clean your hepa filter air purifier with hot water if your model allows water cleaning. Soaking it with warm water is recommended, especially if you find it too dirty. Besides, when cleaning non-washable filter air purifiers with dust & debris, using a vacuum could be best.

Many people believe that HEPA filter purifiers can’t be cleaned and, of course, need to change or throw away after 1-2 years later. In this article, we’ll show you that it is too easy to clean over and over again that save your worthy bucks.

What is hepa filter air purifier?

Nowadays, the outside air is highly polluted that can affect the respiratory system (RS) and can cause asthma, allergies etc. On the other hand, the air inside the house can also be polluted and can cause many health problems.
Ensuring fresh and pollution-free air is a must, especially for patients who suffer from sneezing, allergies, itchy eyes and serious coughing. So improving the air quality, especially at home, is a matter of relief.

Does a HEPA filter help with allergies?

In this regard, choosing the right HEPA filter air purifier can be the relief you demand. When it comes to getting high-efficiency particulate air, a HEPA filter could be your number one choice. It helps you to filter out smoke, dust, germs, mold and more.

Looking for a cheap air purifier for smoke? There’re actually plenty.

Who Uses HEPA filter air purifier?

You will find the presence of a HEPA filter air purifier in both home and industrial environments.
Besides, let’s take a look at some other uses of these purifiers below. The applications are including:

  • Car
  • Aircraft
  • Laboratories and
  • Hospitals.
  • HVAC systems

How do HEPA Filters Work?

The main mechanism of a HEPA air purifier is to remove unwanted and hazardous particles from the air surface.

How do I know if my HEPA filter is dirty?

This machine uses filter mats that are fixed with fibers to catch unwanted particles to perform this job. Also, it uses three different mechanisms to make sure particles are trapped while going through the mats.

  • Impaction (particles stick to fibers)
  • Interception (large substances travel to the fiber directly)
  • Diffusion (tiny substances hit against gas molecules, confining their way by the filter)

Watch the video to know the answer, can hepa filter stop viruses.

Step by step process on how to clean hepa filter air purifier?

You will find two types of HEPA filter air purifiers out on the market.

  • Washable HEPA filter air purifier and
  • Non-washable HEPA filter air purifier

Let’s discuss the step-by-step processes on when to change hepa filter air purifier both washable and non-washable HEPA filter air purifiers.

Method 1: (Washable HEPA filter air purifier cleaning guide)

Lets’ reveal the step-by-step process on how you can clean your washable HEPA filter air purifier. Please read the following steps.

Wondering is there any baby room air purifier? Oh, yeah & those are the safest. Step by step process on how to clean washable HEPA filter air purifier:

Step 1 (Check the manual of your machine to sure it is washable or not):

First of all, you should read the manual of your HEPA filter to see cleaning this machine is safe or not. You will find some filters that allow you to clean these occasionally. On the other hand, some filters are not safe to wash with water because water’s slight touch can ruin these.

N.B. If you don’t have users’ manual, you can get the help of search engines to get the product manual’s digital copy. To get this copy, you will need to type the model number into the manufacturers’ site.

Warning: Don’t try to use any details from other sources than the manufacturer of the machine. In some cases, cleaning a non-washable purifier into the water can void the warranty.

Step 2 (Remove the filter outside to keep your house clean from dirt and debris)

Now you should take your filter outside or to the workshop to remove and wash it.

Can HEPA filters be washed and reused?

Cleaning the filter outside is important because it helps to balance the quality of air at home. Moreover, a larger unit comes with lots of dust and debris that can destroy the air quality and dirt your home environment.
Tip: If you have a small unit that is easy to handle or are not worried about the dust, you can disassemble your HEPA filter air purifier at home and wash it in a faucet.

Step 3 (Remove the HEPA filter):

Before attempting to remove the HEPA filter, you need to ensure that you turn off or unplugging the unit from the socket.

  • Now mark the filter and remove the panel that holds the filter.
  • Separate the filter of the machine

Tip: If you find any problem to remove the filter, you may check the manual or get professionals’ help.

Step 4 (Tap your HEPA filter over the garbage bin):

Relying on the type of filter or depending on how often you clean your filter, you can understand how much dirt and debris are piled up there. To lose or remove any build-up dirt, gently tap the filter over the bin or trash.

Step 5 (Wash your filter air purifier with water):

When it comes to cleaning the filter, you should not apply high pressure because it may ruin it. Until the filter becomes dirt-free, continue to clean it with running water.

Note: You will find some manufacturer who recommends cleaning the filter with slightly hot water. On the other hand, some manufacturers allow their filter to wash with cold water.


You can check the manual to know what would be the ideal water temperature to clean your unit. You should only wash the exterior side if you have a Cylindrical wet or dry vacuum filter. However, normally you can wash both inside and outside of a washable HEPA filter air purifier.
For Washable filter only
(Air Purifier)

Step 6 (dry your HEPA filter air purifier before re-installation):

Before reinstalling HEPA filter air purifier, you should dry it completely. Drop the extra water from the filter by shaking it and allowing the next 24 hours to dry.

Warning: Don’t try to dry the filter with a cloth dryer; rather, use your blower dryer to make the job done.

Method 2: How to clean non washable HEPA filter

So what you do if you have a Non-washable HEPA filter? How can you clean it? Is it washable? Let’s reveal the answers to these questions by following the step-by-step process below.

Step 1 (disassemble the filter from the air purifier):

If your air purifier comes with a non-washable HEPA filter, washing it with water will damage the machine.

  • First of all, before removing the filter, ensure that you cover your floor with a sack or plastic.
  • You should turn off your air purifier and unplug it from the socket for safety.
  • If you find any difficulty to open it, you better follow the product manual.

Step 2 (clean the other filter of your machine):

Usually, the non-washable heap filter comes alone. You will find an activated carbon filter or a foam filter in a non-washable HEPA filter that needs to be cleaned.

It is advisable to clean these filters 2 to 3 minutes under a sink. Also, you can use a vacuum cleaner to clean the dirt and dust from the activated carbon filter. Then let it dry in the sunlight for 1-2 hours to remove odors.
Note: Use a towel to dry the activated carbon filter or a foam filter. Let it dry thoroughly for the next twenty-four hours.

Step 3 (Use the vacuum cleaner hose)

  • Now attach the hose of a vacuum cleaner over the HEPA filter.
  • With the help of the hose plus nozzle, cleaning a non-washable unit is easy and effortless.
  • Continue the process until the dirt and debris are removed.
  • Don’t apply too much pressure because it can puncture the machine.

Step 4 (reassemble the filter):

Finally, it is time to assemble the HEPA filter air purifier. Ensure the appliance is completely dry and ready for assembling. You will find some machines that come with electronic filter clean reminders.

How Can I maintain my HEPA filter air purifier?

Basic TipsSolutionSpecial recommendation
Tip 1: (Check the filter and clean it if needed)The washable or non-washable HEPA filter needs to be changed every 1 to 3 months or every 4 to 6 uses. If you want to get the best service from your air purifier filter, you should check and clean it to remove the dirt and dust.Follow the above-mentioned steps to clean the filter successfully.
Tip 2: (clean air purifier filter every 3-6 months)The more you use this machine, the more it will dirt, and you need to clean too often.
If you set the filter to purify a dusty room’s air, it will become dirty too quickly compared to the clean-room.
The manufacturers recommend cleaning both vacuum and washable HEPA filters every 3-6 months.
Tip 3 (clean the filter frequently)You can clean the filter frequently. If you can clean it perfectly, the machine will operate more efficiently.Clean the filter frequently than the manufacturers’ recommendation.
Tip 4 (use electronic reminder)You’ll find some unit that comes with an electronic reminder.
You may also get some sensor system machines to let you know how dusty the machine is.
You shouldn’t depend on the reminder alone. To get a better result, you need to check the filter manually.
Tip 5 (change the filter when it is worn)Generally, both the washable and non-washable filters are long-lasting than the disposal units.
Some machines can provide the service without requiring replacement. However, it is advisable to change the unit if it becomes worn or discolored.
Check the users’’ manual how you need to change the filter without any damage.

Final verdict:

Living with air-born particles can cause severe health hazards, so give you and your family the best start possible. In this regard, having a HEPA could be the best choice to keep the air clean from unwanted particles.

Besides, you need to ensure that your HEPA filter purifier is clean and well-maintained because it allows you to live in an environment that wouldn’t promote asthma and allergies. So there is no other better option than clean the filter just in time.

 We hope, if you find any difficulties on how to clean air purifier filter– this article could be the best option.

Quick question: How many times can you wash a HEPA filter? I would say once every three month

Last update on 2021-10-16 at 21:30 / Affiliate links / Images from Amazon Product Advertising API


Hi, I'm Dina (the nerd) Yeah, like every New Yorker, I love good food. And this homenerdy is all about my passion- baking, cooking, dog's care & make an eco-friendly cozy home.

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