Smart Air Purifier 4
Lite FilterThree-layer high-efficiency filtration
to protect your healthPM2.5 and pollen filtration | Pet hair filtration | Odour elimination
Only compatible with Xiaomi Smart Air Purifier 4 Lite
It is recommended to replace the filter every 6–12 months.
All-in-one filter element
Layer-by-layer filtration for good healthA primary filter, Xiaomi's high-efficiency filter and a high-quality activated carbon filter work together
to purify your air and keep you healthy.
High-quality activated carbonXiaomi's
High-efficiency filterPrimary filter
Primary Filter
360° blocking of large particlesThe primary filter provides an initial filtration by filtering dust, hair, fine crumbs among other large particles and is resistant to creases, oil, acids, alkalis and more to ensure a long service life.
Dust
Fine crumbs
Pet hair
Cotton fibers
Xiaomi's High Efficiency Filter
99.97% elimination of 0.3μm particles*The high-efficiency filter with a large surface area removes PM2.5, pollen etc. for consistent clean-air output.
0.1μm
0.3μm
PM2.5
Pollen
Pet dander
High-quality impregnated activated carbon
Powerful odour adsorptionThe high-quality activated carbon*, with the sophisticated pore structure and evenly distributed carbon,
effectively removes air pollutants and odour that are harmful in your home.
Pet odours
Cigarette smoke
VOC
Cooking fumes
Other odours
The difference between Xiaomi's High Efficiency Filter and conventional
HEPA FilterCombination 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 micrometers 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 up to 0.3 microns, and can reach up to 99.99% for particles as small as 0.1 microns.
Conventional HEPA filter
Xiaomi's High Efficiency Filter
Less clean air
More clean air
The HEPA filter is made of dense fiberglass to trap particles, which means that less clean air gets through the filter.
Xiaomi's filter uses melt-down PP fibers with electrostatic technology. With greater space between fibres, large volumes of air are able to pass through the filter.
Noisy
Low noise
Large volumes of air are forced through the dense HEPA filter, meaning a higher fan speed is required, which generates more noise.
With a lower fibre density, the filter allows air to pass through at high speeds, resulting in less noise.
Higher energy consumption
Lower energy consumption
In order for the HEPA filter to release more clean air, the motor must run at a higher speed, which translates into a higher energy consumption.
With a lower fibre density, Xiaomi's filter is able to release the same volume of clean air as a conventional filter, but with a much lower energy consumption.
Just one filter for up to one year's usage
Everyday freshness with a long-lasting filterThe all-in-one filter element is durable, though performance will gradually decrease over time. It is recommended to replace the filter element every 6–12 months.
Mi Home/Xiaomi Home app connectivity
Filter replacement reminders on smart devicesYou can check filter usage at any time via the Mi Home/Xiaomi Home app. The app even estimates filter replacement times based on your usage.
*The filter media performance is tested by China Testing & Inspection Institute for Household Electric Appliances (Report Number: WCv-21-40115). Due to the technical specifications of the filter media, the test environment and parameters may differ.