Air Purifier 4 PRO High Efficiency Filter

Three-layer high-efficiency filtration to protect your health

PM2.5 and pollen filtration | Pet hair filtration | Odour elimination

*Recommended to replace the filter every 6-12 months.

All-in-one powerful filter - Clean air outputs after layers of purification

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.

Primary Filter - 360° large particles blocking

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 24000cm² high-efficiency filter* removes PM2.5, pollen etc. to output consistent clean air.

High-quality activated carbon

The 650000mg high-quality activated carbon*, with the sophisticated porous 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 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.

*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.

Just one filter for up to one year's usage - Everyday freshness with a long-lasting filter

Although the all-in-one filter is durable, the performance may gradually degrade over time. It is recommended to replace the filter every 6-12 months.

Mi Home/Xiaomi Home app connectivity - Filter replacement reminders on smart devices

You can view the filter usage at any time on the Mi Home/Xiaomi Home app which estimates the filter replacement time based on your use.

*99.97% elimination of 0.3µm particles: According to China Testing & Inspection Institute for Household Electric Appliances Inspection Report (No. WCv-21-40115), the filter material used for this product achieved a filtration efficiency of 99.97% for particles = 0.3µm.
*24000cm² high-efficiency filter: The surface area of filter paper used on the Xiaomi Smart Air Purifier 4 Pro high-efficiency filter is 24000cm². Data from Smart Mi Lab, and may vary slightly due to differences between individual products.
*High-quality activated carbon content of 650,000mg: The activated carbon content of the filter used on Xiaomi Smart Air Purifier 4 Pro is 650,000mg. Data from Smart Mi Lab, and may vary slightly due to differences between individual products.