Xiaomi Smart Air Purifier 4 Pro
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Fast, Full-Room Purification with a Whisper-Quiet Night Mode
The Xiaomi Smart Air Purifier 4 Pro is sized for mid-to-large rooms, with a 500 m³/h particle CADR that pushes out 8,330 liters of clean air per minute and covers 35-60 m². A three-layer filter stack, mesh pre-filter, True HEPA, and activated carbon, removes dust, pollen, pet dander, odors, and household gases, capturing 99.97% of particles down to 0.3 microns.
Built-in PM2.5/PM10 sensors track air quality in real time and automatically adjust fan speed, so the purifier ramps up when it detects smoke or dust and eases off once the air clears. A light-strip on the touch panel gives an at-a-glance read on current air quality, and a negative ion mode helps settle fine particles faster.
Night Mode drops noise down to just 33.7 dB(A) for sleep-friendly operation, while the top grille lifts off without tools for quick filter changes and cleaning. Filters are rated for 6-12 months of use depending on air conditions, and the whole unit is controlled through the Xiaomi Home app for scheduling, monitoring, and remote adjustments.
- Fast Full-Room Coverage: 500 m³/h CADR covers 35-60 m², moving 8,330L of air per minute.
- 3-Stage Filtration: Mesh pre-filter, True HEPA, and activated carbon capture 99.97% of particles ≥0.3µm.
- Auto Air-Quality Response: PM sensors automatically adjust fan speed to conditions.
- Whisper-Quiet Night Mode: Drops to just 33.7 dB(A) for undisturbed sleep.
- Tool-Free Maintenance: Removable top grille for easy filter access and cleaning.
- Smart App Control: Schedule and monitor remotely via the Xiaomi Home app.
Specifications
- Particle CADR: 500 m³/h (8,330 L/min)
- Coverage Area: 35-60 m²
- Filtration: 3-stage (mesh pre-filter, True HEPA, activated carbon), 99.97% at 0.3µm, TÜV Rheinland certified
- Filter Life: 6-12 months
- Sensors: PM2.5/PM10 auto-adjust
- Noise: ≤65 dB(A) max, ≤33.7 dB(A) Night Mode
- Connectivity: Xiaomi Home app
- Dimensions / Weight: 275 x 275 x 680mm, ~6.8kg
Xiaomi
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