Replacement of the filter in Xiaomi devices: instructions with photos and nuances

Xiaomi filters are like kidneys in the human body: while they work properly, they are not noticed, but once they fail, the whole system fails. Air purifiers stop coping with dust, vacuum cleaners lose suction power, and humidifiers begin to spread an unpleasant odor, and 70% of users make critical mistakes when replacing, reducing the life of the equipment by 2-3 times.

In this article, we will analyze not only step-by-step instructions for different models (Mi Air Purifier, Mi Robot Vacuum, Mi Humidifier, etc.), but also reveal hidden nuances that even official manuals do not mention. For example, why you can not use filters from third-party manufacturers in Xiaomi Mi Air Purifier Pro, how to properly “reset” the filter resource counter in the Mi Home application, and what to do if after replacing the device gives an error E1.

Data collected based on analysis 15+ Xiaomi models (2018-2026), user reviews and service center recommendations. MIUI 14+ Mi Home version 6.5.400.

1.What filters are in Xiaomi equipment and when to change them

Xiaomi devices use up to 5 filter types, each requiring a different approach to replacement.

• 🌀 HEPA-filters (Mi Air Purifier, Smartmi air purifiers) - trap particles up to 0.3 microns (dust, pollen, bacteria) in size. Resource: 6-12 months.
• 🔋 Coal filters (absorb gases, smells) – often come with HEPA. Resource: 3-6 months.
• 🧹 Cyclone filters (Mi Robot Vacuum vacuum cleaners) - trap large debris. Resource: 1-2 months (requires washing).
• 💧 Filters for humidifier (Mi Humidifier) - prevent the formation of scale. Resource: 3-4 months.
• 🔄 Pre-filters (rough cleaning) – protect the main filter from large particles. Resource: 1-3 months (depending on air pollution).

Replacement times are specified for standard conditions (town apartment, moderate dust content) If you live near a construction site, highway or pets, filter life is reduced by 30-50%.

How to know if the filter is time to change:

• ⚠️ The device emits uncharacteristic noise (for example, the humming of a fan in an air purifier).
• 📉 Productivity falls: vacuum cleaner sucks worse, humidifier leaves white plaque.
• 🚨 Replace Filter notification appears on the screen or in the Mi Home app.
• 👃 There is a musty smell (especially relevant for carbon filters).

⚠️ Note: In the air purifiers Xiaomi Mi Air Purifier 3/4 when the filter resource is exceeded by 20% It automatically goes into low power mode, and it's a protection against overheating, but many users mistake it for a breakdown.

2.Preparation for replacement: what to do before

Before you start replacing, follow 4 mandatory steps to avoid damage to the equipment:

1. Disconnect the device from the mains. Even if the indicator is not on, there may be voltage in the capacitors (especially in air purifiers with powerful fans).
2. Prepare the workspace. Deploy the filters and tools on a clean surface. For vacuum cleaners, Mi Robot Vacuum recommends using an antistatic wipe to avoid damaging the electronic components.
3. Take a picture of the current build, which will help you install the new filter correctly, especially if the device has multiple layers (for example, in Smartmi Air Purifier). P1).
4. Check the filter compatibility, even if the filters look the same, they may differ in their article or version. 2S It is not suitable for Mi Air Purifier. 3H.

Disconnect the device from the socket|Check the article of the new filter|Prepare a screwdriver (if disassembly is required)|Clean the body of dust with a dry cloth|Set a reminder of the next replacement-->

If you are replacing the filter in the vacuum cleaner (Mi Robot Vacuum-Mop 2, etc.), additionally:

• 🔄 Remove the battery (if possible according to the instructions) – this will prevent accidental switching on.
• 🧽 Wash the garbage container and cyclone filter (if it is reusable).
• 📱 Sync data in the Mi Home app to avoid losing your cleaning history.

⚠️ Note: In Xiaomi Mi Humidifier 2 humidifiers, the filter cannot be washed under running water - this destroys its antibacterial coating. Use only a soft sponge and room temperature water.

3. Step-by-step filter replacement in Xiaomi air purifiers

Let’s look at the model model: Mi Air Purifier 3/3H/4 Smartmi Air Purifier P1. The instructions are suitable for other devices in the series, but the ways of mounting the cover may differ.

Step 1 Remove the back cover

On the back of the cleaner, find latches or screws (depending on the model). 3H The lid is fixed by two latches on the sides -- press them at the same time and pull on yourself. P1 I'll need a screwdriver. T8 screw-off.

Step 2: Remove the old filter

Carefully pull out the filter, holding it by the plastic frame. Don't pull on the filter material - it can tear. HEPA-In carbon filter models (e.g. Mi Air Purifier Pro) it is removed first. HEPA, coal-block.

Step 3: Installation of a new filter

Check that the arrows on the filter match the direction of the air (usually indicated on the device body).Put the filter before clicking. P1 The carbon filter is first installed, then HEPA.

Step 4: Resetting the resource counter

After replacement, be sure to reset the counter in the Mi Home application:

1. Open the app and select your cleaner.
2. Go to Settings. → Condition of the filter.
3. Click Reset and confirm the action.

4. Replacement of filters in Xiaomi robot vacuum cleaners

The Xiaomi Mi Robot Vacuum and Mi Robot Vacuum-Mop vacuum cleaners use a combined filtration system:

Cyclone filter (detains large debris).

- HEPA-filter (fine cleaning).

Sponge filter (in some models to protect the engine).

Features of replacement:

• 🔧 In Mi Robot Vacuum-Mop 2, you need to remove the dust collector and engine compartment cover (driverdriver) to access the filter. T5).
• 🧼 Cyclone filter can be washed no more than 1 time per month. Use warm water and mild detergent.
• 🚫 HEPA-You can't wash the filter, just replace it.

The first step is to get rid of Mi Robot Vacuum-Mop 2:

1. Install a new filter, making sure the sealing gum fits tightly.

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After replacing the filter in the vacuum cleaner, run a test cleaning in Max Power mode for 5 minutes, which will help to "blown" the system and remove the dust residue from the ducts.

⚠️ Note: Xiaomi Mi Robot Vacuum models 1S older if incorrectly installed HEPA-filter may cause an error E2 (To reset the error, restart the vacuum cleaner by holding the power button for 10 seconds.

5.Filters in Xiaomi moisturizers: how to replace and extend the service life

Xiaomi Mi Humidifier humidifiers use antibacterial filters that not only purify water, but also prevent microbial reproduction. The main mistake users make is to try to wash the filter under the tap, which destroys its structure.

Instructions for Mi Humidifier 2:

1. Turn off the humidifier from the network and drain the water.
2. Remove the top cover by pulling it up.
3. Take out the filter (located at the bottom of the tank).
4. Wash it in a container of water (not under the stream!) with the addition of vinegar (1 tbsp. per 1 liter of water) for disinfection.
5. Install the filter back, making sure it fits tightly to the bottom.

Care tips:

• 💧 Use distilled or filtered water to extend the life of the filter by 30 to 40%.

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Xiaomi moisturizers can not use filters from other brands – this will lead to an error E1 (Sensor incompatibility: Original filters have a chip that synchronizes with the device.

6. Frequent mistakes and how to avoid them

Even experienced users make mistakes that shorten the life of the appliance. TOP-5 Failures and How to Correct Them:

• 🔄 Untimely replacement: If you ignore the notifications of replacement, the fan in the air purifier can burn out (the cost of repair is up to 50% of the price of the device).
• 🧼 Using detergents. Aggressive chemistry destroys HEPA-To clean, use only a vacuum cleaner or a dry cloth.
• 🔋 Buying cheap ones: Non-original filters can not only purify the air worse, but also disable sensors (for example, in Mi Air Purifier 4).

How to check if the filter is original?

The original Xiaomi filter should have:

• 🏷️ Hologram with brand logo.
• 🔢 Unique. QR-code that can be checked in the Mi Home app.
• 📄 Instructions in Chinese/English (included).

7.Where to buy filters for Xiaomi and how much they cost

The original filters can be purchased in 4 proven locations:

• 🛒 Xiaomi official store (mi.com) – a guarantee of originality, but prices are higher by 20-30%.
• 🌍 AliExpress (official Mi Store, Xiaomi Global Store) – there are often discounts up to 40%.
• 🏬 Electronics stores (Svyaznoy, M. Video, Citilink) - convenient if you need a filter urgently.
• 🔧 Service centers – sometimes sell filters at a discount on replacement.

How to save money on filters:

• 📅 Buy in advance (e.g. a set of 3 pieces per year) – it’s cheaper than buying one at a time.
• 🔍 Watch for sales on AliExpress (for example, during 11.11 or Black Friday).
• 🔄 Some filters can be regenerated (for example, coal filters can be calcined in the oven at 100).°1 hour).

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AliExpress often sells “replacement kits» (HEPA + - coal filters for the price of one original.

FAQ: Answers to Frequent Questions