Smart Air Purifier 4 CompactClean air where you need it
Allergen removal / Smart control / Real-time air quality monitoring
Allergen removal for allergy-sensitive people
Dual-use for table and floor – Compact size and small footprint
Automatic adjustment of purification speed – Particulate matter sensor
48 m² – Room size base on 2 ACPH
Visible results – with the air quality indicator
A peaceful and undisturbed night’s sleep – 20dB at a low noise level of
Low energy consumption and high efficiency – 27W Maximum output power as low as
3-in-1 filter 99.97% – Traps particles as small as 0.3 microns
Small but powerful Compact size and small footprint, suitable for home-wide
Dual-use desktop and floor-standing design, compact and easy to move. Powerful performance and a steady output of clean air.
230 m³/h Particle CADR*
360° circulation purification
48m² Base on 2 ACPH*
Bedroom – Fresh air eliminates exhaustionChild’s Bedroom – Protect the respiratory health of children and infantsWorkspace – Operate quietly, doubling your efficiency
Traps 99.97% of particles as small as 0.3 microns 3-in-1 filtration for thorough purification
Eliminate common indoor air pollutants effectively with layer-by-layer filtration
Pollen-Dust-Smoke-Wildfire ash-Pet odours-Pet hair-Pet dander-Other odours
TÜV Rheinland Allergy Care Certification Strict allergen filtration guaranteed
Certified by the authoritative TÜV Rheinland, Xiaomi Smart Air Purifier 4 Compact is proven to effectively filter out allergens in the air
Take care of allergy-sensitive individuals – Filter out allergens such as pollen, dust mites, etc.Protect families with pets – Filter out allergens such as pet hair, dander, etc.
Smart remote control Clean air where you need it
Remotely activate your air purifier by using the Mi Home/Xiaomi Home app, welcoming you home with clean and fresh air.
Support for voice control
Call for good air remotely
*Alexa and Google Assistant voice control features require smart voice devices to function. Related connecting devices are sold separately.
One-touch Auto Mode Real-time monitoring, high-efficiency purification
With particulate matter sensor configuration, sensitive monitoring of air quality and automatic adjustment of purification speed, you can enjoy clean air at all times.
Particulate matter sensor
Real-time sensing of changes in air quality
Real-time air quality monitoring Keep an eye on changes for enhanced purification
Intuitive indoor air-quality data from four-color indicator light. Adjust your purification settings with the simple touch control buttons, one light touch to fulfil your air-quality needs.
Customized purification area Choose the optimal speed in one step
In manual mode, you can set the coverage area and customise the speed according to your preference.
Clean air from ultra-quiet sleep mode Protect your sweet dreams
In Sleep Mode, noise is as low as 20dB* and the display light can be turned off. Have a peaceful night’s sleep without late-night disruptions.
Low-consumption purification, effective protection
Power can be as low as 27W, even at the maximum output. Only 0.7kWh are needed for 24 hours of purification*.
Efficient brushless DC motor
No carbon brush friction, making it quieter and more energy efficient.
An excellent user experience, it’s all in the details
Effortless one-step filter replacement – Rotate and pull out from the bottom
Filter replacement reminders – Simply change your filter when recommended
Stylish appearance – Matte texture, elegant lines
The difference between Xiaomi’s High Efficiency Filter and a conventional HEPA Filter
Combination of two filter technologies: Electrostatic and mechanical filtration. Xiaomi’s High Efficiency Filter media can remove 99.97% of airborne particles as small as 0.1 micrometres and traps dust, PM 2.5, pollen, pet dander, smoke and even the smallest microplastics. The filtration rate of Xiaomi’s High Efficiency Filter media is 99.97% for fine particles of up to 0.3 microns, and can reach up to 99.99% for particles as small as 0.1 microns.
* 16–27m² effective coverage area: As calculated in Air Purifier (GB/T 18801-2015) Appendix F.4: Area of application = pCADR x (0.07–0.12). pCADR data from CVC Testing Technology Ltd. Report no.: WTS2022-4212.*Traps 99.97% 0.3μm particles: According to the China Testing & Inspection Institute for Household Electric Appliances Inspection Report (No. WCv-21-40115), the filter material used for this product achieved a filtration efficiency of 99.97% for 0.3μm particles.* 230m³/h Particle CADR: Data from CVC Testing Technology Ltd. Report no.: WTS2022-4212.* Low-noise 20dB Sleep Mode: Refers to the noise value generated when the product is in Sleep Mode. Data from CVC Testing Technology Ltd. Report no.: WTS2022-4212.* Only 0.7kWh are needed for 24 hours of purification: 27W x 24h ÷ 1000 = 0.684kWh. 24h power consumption of 0.684kWh, approximately 0.7kWh.*Alexa is not available in all languages and countries. Alexa features and functionality may vary by location. Please refer to official website for more information.*48 ㎡ room size is base on 2 air changes per hour(ACPH), meaning that it can purify a 48 m² room 2 times per hour(assuming the room has a ceiling height of 2.4 m), room size = pCADR ÷ 2.4 m÷2. pCADR data from CVC Testing Technology Ltd. Report no.: WTS2022-4212.* Room size(up to) is calculated based on 2 air changes per hour(ACPH) and PCADR, meaning that it can purify a room of this size 2 times per hour(assuming the room has a ceiling height of 2.4 m), Room size = PCADR ÷ 2.4 m÷2.* Effective coverage area is calculated according to the Chinese national standard GB/T 18801-2015, assuming the room has a ceiling height of 2.4 m and considering factors such as the outdoor particulate pollutant concentration of 300μg/m³ and the number of air changes in buildings, the standard is more stringent. Effective coverage area=(0.07~0.12)*PCADR.
Product name: Xiaomi Smart Air Purifier 4 Compact
Product model no.: AC-M18-SC
Product dimensions: Φ220 x 355mm
Product net weight: Approx. 2.2kg
Effective coverage area: 16-27m²
Noise: ≤ 60dB(A)
Particle CADR: 230m³/h
Particle purification efficiency: High
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