Xiaomi Smart Air Purifier 4 Pro - White

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The Xiaomi Smart Air Purifier 4 Pro is built for larger living rooms, bedrooms and offices, with a particle CADR of up to 500 m³/h and an effective coverage area of 35–60 m². A three-in-one filter combines a primary mesh, Xiaomi's High Efficiency Filter and a large volume of activated carbon to deal with dust, pet hair, pollen, smoke and odours together. Dual PM2.5 and PM10 laser sensors feed an OLED display and Auto Mode, so it adjusts itself to whatever the room actually needs.

Key features & benefits

500 m³/h particle CADR
Enough clean air output to cycle a 40 m² living room in roughly 15 minutes, or a 30 m² bedroom in about 11 minutes, so the room recovers quickly after cooking or opening a window.

35–60 m² effective coverage
Sized for open-plan living areas and larger bedrooms rather than a single small room, which means one unit can cover a main living space.

Three-in-one filter
A primary filter for hair and large debris, Xiaomi's High Efficiency Filter which removes 99.97% of 0.3 µm particles, and 650,000 mg of activated carbon for odours — all in a single cartridge you change once.

PM2.5 and PM10 dual laser sensor
Coarse particles like pollen and spores are tracked alongside fine smoke particles, so Auto Mode reacts to allergy triggers, not just haze.

OLED display with colour-coded light ring
Real-time PM2.5 and PM10 readings plus an at-a-glance colour band tell you the air quality without opening your phone.

360° all-round air intake
Air is drawn in from every side, so the purifier still works properly when it is placed near furniture rather than in the middle of the room.

Filter life of 6–12 months
A 24,000 cm² expanded filter area means far fewer replacements than a small purifier, and the app tells you when a change is due.

33.7 dB(A) Night Mode
Display brightness turns off and the fan drops to a whisper, so it can keep running beside a bed without disturbing sleep.

Negative ionisation and TUV Rheinland Allergy Care certification
Independent certification for allergen filtration, with optional ionisation for an extra freshening effect.

How to set up & use

Unpack the purifier, open the magnetic side door and remove the plastic wrapping from the filter before first use. Plug it in, then open the Mi Home / Xiaomi Home app, add the device and follow the on-screen pairing steps to join it to your 2.4 GHz Wi-Fi. Leave it in Auto Mode for day-to-day use and switch to Night Mode at bedtime; the app will remind you when the filter needs replacing.

Connectivity & compatibility

Connects over Wi-Fi to the Mi Home / Xiaomi Home app on Android and iOS for remote control, timers, air-quality history, child lock and filter reminders. It also supports voice control through Amazon Alexa and Google Assistant — a compatible smart speaker is sold separately.

What's in the box

1 x Xiaomi Smart Air Purifier 4 Pro
1 x Filter
1 x Power cable
1 x User manual

Care & safety

Replace the filter on the schedule given in the manual and when the app prompts you — a saturated filter stops working.
Do not block the air intake around the base or the outlet on top; keep clear space around the unit.
Unplug the purifier before opening the door or unscrewing the top grille.
Wipe the fan blades and air ducts with a soft dry cloth only, with the unit switched off and unplugged.
Keep the purifier upright on a flat, dry surface and away from water, steam and direct heat.
Do not wash the filter or attempt to reuse it — it is a replace-only part.

Who it suits

Households with pets, allergy sufferers or anyone in a larger living room or bedroom who wants automatic, app-monitored air cleaning rather than a basic fan-and-filter box.

Technical specifications