Air Purifier Filter Xiaomi Mi Smart Air Purifier 4 Compact 175x175x171mm

The Xiaomi Mi Smart Air Purifier 4 Compact filter is a three-layer replacement filter designed for compact air purifiers (175 x 175 x 171 mm). It combines a primary pre-filter, Xiaomi's High Efficiency Filter and an activated carbon layer to reduce dust, pollen, pet hair, dander and fine particulates, helping to maintain cleaner indoor air. The integrated filter is recommended for replacement every 6–12 months depending on usage.

Advantages

The three-layer design provides staged filtration: a durable primary filter captures large particles and resists creasing, oil and acids; Xiaomi's High Efficiency Filter captures up to 99.97% of 0.3 μm particles including PM2.5 and common allergens; the activated carbon layer helps absorb odors and gaseous impurities. The filter is sized to fit the Mi Smart Air Purifier 4 Compact and supports app-based monitoring and replacement reminders via the Mi Home/Xiaomi Home app.

Suitable for

• Homes and apartments looking to reduce dust, pollen and pet allergens
• Small offices and compact rooms where the Mi Smart Air Purifier 4 Compact is used
• Environments needing regular removal of PM2.5 and fine particles

Key specifications

• Compatibility: Xiaomi Mi Smart Air Purifier 4 Compact
• Dimensions: 175 x 175 x 171 mm
• Layers: 3 (primary pre-filter, High Efficiency Filter, activated carbon)
• Particle capture: captures up to 99.97% of 0.3 μm particles
• Recommended replacement interval: 6–12 months
• MPN: 38752 · EAN: 6934177775352

How to use

Turn off and unplug the air purifier before replacing the filter. Rotate and pull the filter out from the bottom of the unit according to the device instructions, then insert the new filter until it fits securely. After replacement, power the unit on and, if available, open the Mi Home/Xiaomi Home app to reset the filter usage status so the app can track the new filter life and provide replacement reminders.

Usage recommendations

Replace the filter every 6–12 months depending on indoor air quality and usage duration. Use the Mi Home/Xiaomi Home app to monitor filter life and follow the purifier’s manual for safe replacement procedures.