Xiaomi Smart Air Purifier 4 Pro HEPA Filter - Grey

Xiaomi Smart Air Purifier 4 Pro Filter
Three-layer high-efficiency filtration to protect your health
*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 0.3?m 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.