Xiaomi Smart Air Purifier 4 Lite Filter

Three-layer high-efficiency filtration to protect your health
PM2.5 and pollen filtration | Pet hair filtration | Odour elimination.

All-in-one filter element
Layer-by-layer filtration for good healthA 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° blocking 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% elimination of 0.3μm particles
The high-efficiency filter with a large surface area removes PM2.5, pollen etc. for consistent clean-air output.

High-quality impregnated activated carbon
Powerful odour adsorptionThe 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 conventional HEPA Filter
Combination of two filter technologies: Electrostatic and mechanical filtration. Xiaomi's high efficiency filter media can remove 99.97% of airborne particles as small as 0.1 micrometers and traps dust, PM 2.5, pollen, pet dander, smoke and even the smallest microplastics. The filtration rate of Xiaomi's high-efficiency filter media is 99.97% for fine particles up to 0.3 microns, and can reach up to 99.99% for particles as small as 0.1 microns.

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.

Mi Home/Xiaomi Home app connectivity
Filter replacement reminders on smart devicesYou 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.