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Xiaomi Smart Air Purifier 4 Pro
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Specifications
Product details
Specifications, compatibility and what to check before ordering.
Xiaomi Smart Air Purifier 4 Pro is the highest-output model in this three-product comparison. Xiaomi quotes a particle clean air delivery rate (CADR) of 500 m³/h and an effective coverage area of 35–60 m², making it the starting point for a larger living room or office within that range.
Key specifications
- 500 m³/h particle CADR: Xiaomi’s published maximum clean-air delivery figure.
- 35–60 m² effective coverage: manufacturer guidance; cleaning speed depends on room layout, pollution load, ventilation and fan setting.
- Three-stage filter: pre-filter, Xiaomi High Efficiency Filter and activated carbon for particles and some odours.
- PM2.5 and PM10 monitoring: dual-effect sensor and OLED display for air-quality feedback.
- Smart controls: supported Xiaomi Home app features include remote settings and filter reminders.
- Night Mode: Xiaomi quotes 33.7 dB(A) in its low-noise test; maximum airflow will have a different sound level.
Is the Pro right for your room?
The Pro offers more published particle CADR than the 4 Lite (360 m³/h) and standard 4 (400 m³/h), but the larger body and exact replacement filter should also fit your setup. Read our Xiaomi Air Purifier 4 Lite vs 4 vs 4 Pro guide for a side-by-side comparison. Buy a replacement filter specified for the 4 Pro and follow the filter-life reminder. Confirm current price and stock above before checkout.
This purifier helps clean indoor air but does not replace ventilation, source control or medical care.
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Questions before you buy
What room size is the Xiaomi Smart Air Purifier 4 Pro for?
Xiaomi recommends an effective coverage area of 35–60 m² and quotes a particle CADR of 500 m³/h. Cleaning speed depends on room layout, ventilation, pollution level and fan setting.
How does the 4 Pro compare with the 4 Lite and standard 4?
The 4 Pro has the highest published particle CADR of these three models: 500 m³/h, compared with 400 m³/h for the standard 4 and 360 m³/h for the 4 Lite. Also compare footprint and replacement-filter fit.
Does the 4 Pro display air-quality readings?
Yes. Xiaomi lists PM2.5 and PM10 monitoring with an OLED display for air-quality feedback. Supported remote settings and filter reminders are available through Xiaomi Home.
Which replacement filter should I buy?
Use a filter specified for the Xiaomi Smart Air Purifier 4 Pro. Check the exact filter model and follow its filter-life reminder; filters for the 4 Lite or standard 4 should not be assumed to fit.





