Xiaomi Smart Air Purifier 4 Lite – HEPA H12, PM2.5 Display, Mi Home App

You Can't See What's in Your Air. Xiaomi Can.

PM2.5 particles. Formaldehyde from new furniture. Bacteria floating through the room. You breathe it all in without knowing it's there — because you can't see it, smell it, or feel it until it becomes a problem.

Most air purifiers just run quietly in the corner. You have no idea if they're actually working or what the air quality is right now.

The Xiaomi Smart Air Purifier 4 Lite shows you exactly what's in your air in real time, cleans it at 380m³/h, and lets you control everything from your phone — even when you're not home.

Key Features

• 380m³/h CADR for PM2.5 — Purifies 6,330 liters of air per minute. Covers 36–45m² rooms completely, cycling the air multiple times per hour.
• HEPA H12 Filter — Four-layer filtration system captures fine dust, pollen, pet dander, mold spores, and PM2.5 particles with high efficiency.
• 99% Formaldehyde Removal — Dedicated aldehyde-removal layer targets VOCs from new furniture, flooring, paint, and building materials. Gaseous CADR: 120m³/h.
• 99.99% Antibacterial Coating — New antibacterial technology on the filter surface eliminates 99.99% of certain bacteria, adding an extra layer of protection.
• High-Precision Laser PM2.5 Sensor — Detects particles as small as 0.3 microns and displays real-time PM2.5 readings on the LED screen. Three-color light bar gives instant visual feedback on air quality.
• LED Digital Display — Always-visible PM2.5 number on the front panel. Screen brightness can be turned off for nighttime use.
• 35.8dB(A) Silent Mode — Whisper-quiet operation at the lowest fan speed. Designed for bedrooms — you won't hear it while you sleep.
• Mi Home App Control — Control power, fan speed, and modes remotely. Monitor air quality in real time. Set schedules and link with other Xiaomi smart home devices.
• Compact Footprint — 240 × 240 × 533.5mm. Smaller than an A4 sheet of paper in floor space. Fits in corners, beside beds, or on shelves without taking over the room.
• Easy Filter Replacement — Press the buckle, lift out the old filter, insert the new one. No tools required.

What Clean Air Actually Feels Like

You wake up and the PM2.5 reading on the display says 3. You didn't do anything differently — the purifier ran overnight on silent mode while you slept. The morning congestion you used to dismiss as normal isn't there. The air in the room feels lighter. You open the Mi Home app and see the air quality history from the past 24 hours. This is what it feels like when your home's air is actually being managed.

Perfect For

• Bedrooms (36–45m²) — silent mode for undisturbed sleep with real-time air monitoring
• Living rooms — continuous background purification with visible air quality data
• New homes or renovated spaces — formaldehyde removal from new materials
• Allergy and asthma sufferers — HEPA H12 captures pollen, dust mites, and mold
• Homes with pets — removes dander and pet-related particles
• Smart home setups — integrates with Mi Home ecosystem

Technical Specifications

• Model: AC-M17-SC
• Coverage: 36–45m²
• PM2.5 CADR: 380m³/h
• Gaseous CADR: 120m³/h
• HEPA Grade: H12
• Noise (Silent Mode): 35.8dB(A)
• Noise (Max): 60dB
• Rated Power: 32W
• Voltage: 220V AC
• Motor: Brushless DC
• Dimensions: 240 × 240 × 533.5mm
• Weight: 5.5kg
• Power Cord: 1.6m
• Particulate CCM: P4 | Gaseous CCM: F4
• Certification: CE, RoHS

⚠️ Important Note: This is the Chinese version of the Xiaomi Smart Air Purifier 4 Lite. It operates on 220V AC and requires the Mi Home app with the region set to Chinese Mainland for full smart functionality. A plug adapter (UK or AU) is available as an option at checkout.

What's in the Box: Air purifier × 1 | Filter element × 1 | Power adapter × 1 | Manual × 1

Know your air. Clean your air. Control your air — from anywhere. 🌬️