Xiaomi Smart Air Purifier 4 Filter
Three-layer high-efficiency filtration to protect your health
PM2.5 and pollen filtration|Pet hair filtration|Odour elimination
Only compatible with Xiaomi Smart Air Purifier 4
It is recommended to replace the filter every 6–12 months.
All-in-one powerful filter
Layers of purification for clean air output
A primary filter, Xiaomi's High Efficiency Filter and a high-quality activated carbon filter work together to purify your air and keep you healthy.
of large particles
The primary filter provides an initial filtration by filtering dust, hair, fine crumbs among other large
particles and is resistant to creases, oil, acids, alkalis and more to ensure a long service life.
Xiaomi's High Efficiency Filter
99.97% filtration of 0.3μm particles*
The 22000cm² high-efficiency filter * removes PM2.5, pollen etc. for consistent clean-air output.
High-quality impregnated activated carbon
Powerful odour adsorption
The 500000mg high-quality activated carbon*, with the sophisticated pore structure and evenly distributed carbon, effectively
removes air pollutants and odour that are harmful in your home.
The difference between Xiaomi's High-Efficiency
Filter and a conventional HEPA Filter
Combining two filter technologies: Electrostatic charge and mechanical filtration, Xiaomi's High Efficiency Filter media can remove
99.97% of airborne particles of 0.3 micrometers in size and traps dust, PM 2.5, pollen, pet dander, smoke and tiny particles.
Compared to a conventional HEPA filter, Xiaomi's High Efficiency Filter allows the air purifier to generate
less noise and consume less energy by allowing more airflow to pass through the filter all the while keeping the same cleaning efficiency.
Disclaimer: Filter media performance is tested by China Testing & Inspection Institute for Household Electric Appliances (Report
Number: WCv-21-40119). Due to the technical specifications of the filter media, the test environment and parameters may differ.
Just one filter for up to
one year's usage
Everyday freshness with
a long-lasting filter
The all-in-one filter element is durable, though performance
will gradually decrease over time. It is recommended to replace
the filter element every 6–12 months.
Home app connectivity
reminders on smart devices
You can check filter usage at any time via the Mi
Home/Xiaomi Home app. The app even estimates filter
replacement times based on your usage.
*The filter media performance is tested by China Testing & Inspection Institute for Household Electric Appliances (Report Number: WCv-21-40115). Due to the technical specifications of the filter media, the test environment and parameters may differ.
* 22,000cm² high-efficiency filter paper: The surface area of filter paper used on the Xiaomi Smart Air Purifier 4 high-efficiency filter is 22,000cm². Data from Smart Mi Lab, and may vary slightly due to differences between individual products.
* High-quality activated carbon content of 500,000mg: The activated carbon content of the filter used on Xiaomi Smart Air Purifier 4 is 500,000mg. Data from Smart Mi Lab, and may vary slightly due to differences between individual products.