Smartmi Air Purifier 3
Refresh Your Living Room's Air in 14.4 Minutes
Particle CADR up to 400 m³/h
Removes 90.1% of Pet Odors
Effectively solves odor issues in pet households
High-Efficiency Removal of Bacteria & Allergens
Protects sensitive respiratory health
PM2.5 & PM10 Dual Sensors
Monitor your indoor air quality in real time
4-in-1 Multi-Effect Filter
Removes 99.97% of particles as small as 0.3 μm
Smart Control
Mi Home App & Voice Control
Auto Purification Mode
Keeps air clean at all times
Quiet Operation Design
Quietly supports rest, study, and focus moments
Minimalist Elegant Design
Stylish, premium look to complement any space
7,666 L/min Powerful Airflow*
Instantly Refresh Your Entire Room
Equipped with a high-efficiency DC inverter motor and particle CADR up to 400 m³/h, it quickly refreshes the air in large living rooms, offices, studios, and other spacious environments.
Particle CADR*
Recommended Room Size*
Coverage Area Up to *
Removes 90.1% of Pet Odors*
Fresh Air for Pet Owners
Powered by AmmoniaCapture™ Technology with a pet-specific deodorizing formula, it quickly removes odors from pet urine and feces, keeping the air fresh for multi-pet households.
1-hour ammonia removal rate*
Activated carbon content up to
Efficient Removal of Bacteria & Allergens
Stay protected during pollen and flu seasons, ideal for sensitive individuals
The high-precision filter effectively captures bacteria, viruses, dust, pollen, and pet allergens, providing strong protection during pet shedding seasons, pollen seasons, and flu seasons. Keep your home air healthy for the whole family.
Pollen AllergensRemoval Rates in 1 Hour*
Cat Dander Allergens
Removal Rates in 1 Hour*
H1N1 Influenza VirusRemoval Rates in 1 Hour*
Staphylococcus aureusRemoval Rates in 1 Hour*
Streptococcus pneumoniaeRemoval Rates in 1 Hour*
Escherichia coliRemoval Rates in 1 Hour*
4-in-1 Multi-Effect Filter
Removes 99.97% of 0.3 μm particles*
Combining a protective layer, pre-filter, premium modified activated carbon, and high-efficiency filter, it effectively and continuously removes indoor air pollutants, creating a safe breathing environment.
PM2.5
Dust
Pollen
Dander
Pet Hair
Pet Odors
Bacteria
Viruses
Four Key Sensors
Your Home Air Data Hub
Monitor indoor pollutants in real time and stay informed about your air quality.
One-Touch Auto Mode
Ideal Air Always
Switch to Auto Mode via the Mi Home App or the purifier’s touch control. The purifier adjusts its speed in real time according to air quality, keeping your home air clean at all times.
Smart Control
Clean Air, Anytime
Quiet Operation Design
Sleep Peacefully with Fresh Air
Sleep mode noise is as low as 26 dB(A)*. The display can be dimmed or turned off for a quiet, light-free environment, while fresh air helps you sleep soundly.
Four-Curve Streamlined Design
Minimalist, Elegant, Premium
Featuring a dark gray metallic finish, the curved design adds an artistic touch to any space.
* 7,666 L/min Powerful Airflow: Refers to the clean air delivery rate at maximum fan speed. Tested by Shanghai Hack Filtration Technology Co., Ltd., Report No.: KJFL20250815.
* 400 m³/h Particle CADR: Tested by Guangzhou Institute of Microbiology Group Co., Ltd. Actual particle CADR: 427 m³/h; rated CADR: 400 m³/h. Report No.: KJ2025001878.
* Recommended Room Size 28–48 m² / Coverage up to 516 sq.ft: Calculated based on GB/T18801-2022 Appendix F.4: Usable area = Particle CADR × (0.07–0.12).
* 14.4 min to Refresh Living Room Air / Purify a 40 m² Living Room: Based on a room area of 40 m² and a ceiling height of 3 m. Purification time = Room area × Ceiling height ÷ Particle CADR.
* Removes 90.1% of Pet Odors / 90.1% Ammonia Removal in 1 Hour: Pet odors refer to ammonia, which smells similar to urine. Odors originate from pet urine, sweat, etc. Tested by Guangzhou Institute of Microbiology Group Co., Ltd., Report No.: KJ2025001879.
* 98.02% Pollen Allergen Removal in 1 Hour / 99.01% Cat Dander Removal in 1 Hour: Tested by Guangzhou Institute of Microbiology Group Co., Ltd., Report No.: KJ2025001878.
* 99.99% H1N1 Influenza Virus Removal in 1 Hour: Tested by Guangzhou Institute of Microbiology Group Co., Ltd., Report No.: KJ2025001880.
* 99.99% Staphylococcus aureus / Streptococcus pneumoniae / Escherichia coli Removal in 1 Hour: Tested by Guangzhou Institute of Microbiology Group Co., Ltd., Report No.: KJ2025001878.
* Removes 99.97% of 0.3 μm Particles: Tested by Guangzhou Institute of Microbiology Group Co., Ltd., Report No.: KJ2025002053.
* Voice Control: Alexa and Google Assistant require compatible smart devices, which must be purchased separately.
* Sleep Mode Noise as Low as 26 dB(A): Tested by Guangzhou Institute of Microbiology Group Co., Ltd., Report No.: KJ2025001878.
*Unless otherwise specified, all data on this page comes from Smartmi Laboratory. Actual performance may vary due to environmental differences.
*Product images, diagrams, and functional illustrations are for reference only. Actual product appearance and performance may differ.
*Some product display images have hidden cables for visual purposes. In actual use, power cords must be connected.
Purification Efficiency
Partical CADR - 400 m³/h
Ammonia Removal Rate - 90.1%
Remove 99.97% particles down to 0.3µm
Recommended Room Size
28–48㎡ (301-516sq.ft)
Screen
LED display
APP + AI voice Smart control
Smartmi Link
Hey Google
Alexa
Specifications
Product Name: Smartmi Air Purifier 3
Color: Dark Gray
Noise: ≤66 dB(A)
Rated Power: 40W
Rated voltage: AC 100-240 V
Net Weight: Approx. 6.1 kg
Gross Weight: Approx. 7.5kg
Product Size: 290*260*529 mm
Package Size: 347mm*314mm*633mm
