Xiaomi Smartmi P1 Hepa Filter

The H13 True HEPA filter effectively removes unwanted airborne particles in the home through four different filtration levels. The H13 True HEPA filtration process is based on four phases: a pre-filter, a NanoGuard filter, an activated carbon filter, and an internal filter. The filter's lifespan is about 6-12 months, depending on how much the air purifier has been used and exposed to unhealthy air.

Pre-filtering particles
The pre-filter captures larger airborne particles such as dust, pollen, and mites.

NanoGuard filtration
The second filtration process consists of the NanoGuard filter, which purifies the air from particles as small as 0.1 μm, achieving an efficiency of 99.99%. NanoGuard also cleans the air from airborne particles such as dust, pollen, bacteria, mold, and other harmful substances.

Activated carbon layer
The third filtration consists of the activated carbon layer, which neutralizes volatile organic compounds in the air. The carbon filter neutralizes invisible smoke odors, viruses, and formaldehyde from the air, which can cause several serious health effects.

Final filtration
Last but not least, the final filtration consists of the internal filter, which removes residual particles that were not eliminated in the above processes.