Xiaomi Mi Air Purifier Anti-Formaldehyde Filter S1

  • High efficiency 3 layers filter
  • The store remains more activated carbon
  • Recommend replacing cycle are 3 – 6 months
  • Compared to universal, S1 Filter formaldehyde CADR promoting up to 66%, CMM Grade up to F4
  • Provides a comfortable and healthy clean living/learning/office environment for you and your family.


Formaldehyde S1 filter for the Mi Air Purifier

The formaldehyde filter combines an aerodynamic 360° cylindrical design with an efficient triple filter consisting of a primary layer, HEPA and activated carbon. Ease of use, replacement and its efficiency and quality is what makes Mi Air Purifiers so effective.

It filters out the smallest particles

-> Dust and condensed fumes

-> Human hair and animal hair

-> Paper, wood and other fine particles

-> Vegetable fibers such as pollen and cotton

-> PM2.5 particles

-> Compatible with Xiaomi Mi Air Purifier 2 / 2S / 2H / 3H / Pro

Efficient HEPA filter

HEPA (High-efficiency Particulate Arrestance ) is often used in hospitals and laboratories to filter micron size particles. The Mi air purifier uses an ultra-thick Toray PP and PET HEPA filter to trap PM2.5, PM0.3, pollen and other inhaled particles, allowing only clean air to flow. The filter measures 7.7 m when fully developed and effectively filters out 99% of PM0.3 and 99.99% of PM2.5 particles.

Purification with activated carbon

Active carbon absorbs harmful gases that HEPA is unable to filter. Coconut activated carbon in Mi Air Purifier filters is among the most effective of its kind. It is combined with an anti-formaldehyde formula that effectively absorbs harmful chemicals such as formaldehyde, benzene and ammonia, as well as odours and smoke. It offers a total specific surface area of 57,000m², or 8 football pitches.


Real-time monitoring of use

All filters lose their effectiveness over time and must be replaced immediately. Filters that are not replaced on time may not be able to block out harmful substances or may cause secondary contamination. Cleaning old filters with water or vacuum cleaner does not guarantee that the filter will regain its effectiveness. We recommend replacing the filters every six months or less, depending on the use. Use the Mi Home application to monitor the life of your filters and receive reminders to replace them

Colour Green
Device type Air cleaner filter

Technical data
Dedicated to Mi Air Purifier
Mi Air Purifier 2
Mi Air Purifier 2S
Mi Air Purifier 3H
Mi Air Purifier Pro
Colour Green
Dimensions 29,3 cm x 20 cm