How to Change Filters in Miele Vacuum – Simple Instructions

If you fail to use proper filters for your Miele vacuum or change them periodically, you could be unintentionally spreading allergens back into the air. Instead of filtering the particles, the vacuum cleaner would suck up the dust and allergy-causing dirt from the floor and blow it back into the room through the vacuum exhaust.

So, using genuine Miele vacuum cleaner filters and replacing them from time-to-time (ideally after going through 4 dust bags) is important. In the following sections, we will see how to change filters in Miele vacuum in a hassle-free way.

Miele vacuum cleaners can filter out 99.9% of all the particles in your home. However, it will only do that if the filters are performing at full efficiency. Replacing the filters of your Miele vacuum cleaner is easy. It would probably take you less than five minutes to do the job.

It is a good idea to keep a stock of original Miele filters as part of your cleaning kit. If you use the Miele AirClean 3D Efficiency Dust Bags, AirClean filters are included in the box.

However, if your vacuum uses the HEPA filter, you will need to buy that separately. Replacing the filters of your vacuum cleaner at the right time will ensure that all the allergy and odor-causing particles that your vacuum cleaner sucks in, are filtered out before the air comes out of the exhaust.

How to Change Filters in Miele Vacuum

Miele vacuum cleaners uses two filters. The first one is the Pre-Motor filter. It’s located in dust compartment chamber of you vacuum. You will have to remove the dust bag to get access to its slot.

The other filter is the exhaust filter. This can be found at the middle of the interior housing. The exhaust filter can either be a Miele Active AirClean Filter or a Miele HEPA AirClean Filter. We will discuss the difference between these two later in the article.

It is important to disconnect the vacuum cleaner from the power source before opening the dust compartment chamber.

Step-by-Step Instructions to Replace the Pre-Motor Filter

Step 1: Open the Housing

Before you can replace the pre-motor filter, you will need to remove the old one. To do that, open the housing and pull the compartment lid release tab found near the carrying handle. Pull the lid forward until you hear a click. This means the lid is now locked in the open position.

Step 2: Remove the Old Dust Compartment Filter

The housing of the motor filter is found right behind the dust bag. You will need to unlatch the dust bag to get access to that portion of the dust chamber. Set the filled dust bag aside. Pull the filter’s plastic casing forward and remove the old pre-motor filter.

Step 3: Cut the New Filter Based to Proper Size

Now that you have the old filter in your hand, you can use it as a pattern in cutting the replacement filter. You need to cut the filter so that it would be the right size to fit the casing.

You can also follow the scissor lines printed on the replacement filter.

Step 4: Place the Pre-Motor Filter Replacement in the Casing

Take the cut pre-motor filter. Place it behind the plastic casing, making sure that it fits the slot perfectly without leaving any extra space.

Then, gently push the filter casing back to its upright place.

Step-by-Step Instructions to Replace the Exhaust Filter

As mentioned earlier, there are two options for the exhaust filter. If you are using the Active AirClean filter, you will need to follow these steps:

Step 1:  Access the Filter Housing and Retrieve the Old Filter

The Active AirClean filter is located at the middle of the interior housing. Open the dust compartment by pulling up the lid. You’ll see the filter at the back. Pull up the handles of the casing. This will unlatch the top cover, giving you access to the old AirClean filter.

Remove this filter and set it aside.

Step 2: Cut the New Filter

Just like what you did with the pre-motor filter, you may need to cut this exhaust filter to the right size. You can use the old filter as your basis or simply follow the scissor lines.

Step 3: Place the New Filter and Close the Housing

Once the filter has been trimmed to the right size, place it exactly where the old filter sat. Close the top of the housing and press it down firmly to ensure that it is locked in its place. Then close the lid.

If your vacuum cleaner uses the HEPA filter, or if you want to upgrade from the Active AirClean filter to the HEPA one, you will need to follow these steps:

Step 1: Remove the Entire AirClean Filter Housing

If you are going to use a HEPA filter for the exhaust of your vacuum cleaner, you will need to take out the entire filter casing that’s already in it. To do that, grab the top and bottom of the honeycomb housing and pull it up.

Don’t throw this casing away. You may need to use it with the AirClean filter if you forget to buy a HEPA filter. Just set it aside with your other filters and spare dust bags.

Step 2: Install the HEPA Filter

Make sure that you have the right HEPA filter for your vacuum cleaner model. Take it out of its box. You will notice that there are protrusions on the filter casing that will perfectly line up with the indentations on your vacuum cleaner.

Hold the filter with the writing facing towards you and push it towards the back of the machine. Press down and make sure that the filter casing locks in place.

One way of finding out if the filter has been correctly installed is by closing the lid. If you cannot close it, then you need to adjust how the HEPA filter sits in its encasement. 

Step 3: Activate the Filter Indicator

The Miele HEPA AirClean Filter is equipped with an indicator that tells you when it is time for a new exhaust filter. You need to activate this by pressing the green arrow button on the strip.

Once you’ve activated the indicator, you can close the list of the interior housing. Here is an informational video of the entire process.

Dispose the Old Filters Properly

Once you have replaced the old pre-motor and exhaust filters, you need to dispose them properly. Don’t try to wash these filters and reuse them as they are designed for one-time use only. If you try to reuse them, your vacuum will not filter particles properly.

Proper disposal of filters and dust bags are essential to prevent the vacuumed debris from getting back into the air. You don’t want all those allergens and irritants to escape and pollute the air in your home.

It is best to have a small plastic bag ready as you prepare to change filters in Miele vacuum. As you carefully remove the filled dust bag and used filters, place them in the plastic bag. Avoid shaking the back to prevent releasing the trapped dust and other fine particles into the air. Once you’re done, tie the plastic bag shut and place it in your trash can.

How Often to Change Miele Filter?

Changing the filters in your vacuum cleaner allows it to clean your space to the highest level of filtration possible. This means the vacuum cleaner can eliminate all harmful particles on the surfaces and in the air. Plus, these simple steps extend the life of the vacuum cleaner itself.

The Miele AirClean filters must be changed every time you use up four dust bags. That is why two filters come with a box of 4 Miele dust bags. One is for the pre-motor filter slot, and one is for the vacuum cleaner exhaust.

Obviously, the frequency of changing filters and dust bags will depend on how often you vacuum and the volume of debris the vacuum cleaner picks up. If you have a big space that has high traffic, you will need to replace the dust bags and filters more often.

As for the HEPA filter, this is designed to be replaced once every 50 hours of vacuum use. However, the indicator strip makes it easier for you to track if the filter will need replacing soon. As soon as the green indicator changes to entirely red, then it is time to stop and replace the HEPA exhaust filter.

Which Miele Filter Should You Use?

As mentioned, you can choose between two types of exhaust filter you can choose from.

The first one is the Miele Active AirClean Filter. This one is an advanced micro-allergen filter that is capable of trapping 99.95% of particles that are 0.5 microns in size. It is even effective enough to filter 94% of tiny particles measuring 0.3 microns.

The Miele Active AirClean filter also has an activated charcoal component that absorbs odors from your space. That is why this type of filter comes pre-installed with the Miele Cat and Dog vacuum cleaners. This type of filter is the best choice if your home requires filtration that is very close to what a HEPA filter offers but is a little more affordable.

The Miele AirClean HEPA Filter does not have the activated charcoal component, but it provides higher filtration than the Active AirClean filter. It can capture and trap 99.95% of harmful particles as tiny as 0.1 microns.

When you use the HEPA filter with the pre-motor filter, the vacuum cleaner can effectively capture 99.9% of all particulate matter. This is the best filter option if you or somebody in your household suffer from allergies.

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