Xiaomi Mi Smart Air Purifier 4 Compact Filter

3-in-1 filter Clean air output after layers of purification
The primary filter, Xiaomi's High Efficiency Filter and high-quality activated carbon filter work together to purify the air and keep it clean.

Primary Filter
360° blocking large particles
The primary filter traps large particles such as dust, hair and fine chips, while at the same time being extremely durable because it is resistant to crease, oil and acids.

Xiaomi's High Efficiency Filter
Traps 99.97% 0.3μm particles
Filter out PM2.5, pollens, and other allergens, continuously producing clean air.

6–12 months long-lasting filter
for everyday freshness
Although the integrated filter is durable, its performance may gradually degrade over time. To produce the best results, 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 anytime on the Mi Home/Xiaomi Home app which could estimate the filter replacement period based on your daily use.