Xiaomi Smart Air Purifier 4 Compact Filter

Restore Full Filtration to Your 4 Compact

This genuine replacement filter is designed specifically for the Xiaomi Smart Air Purifier 4 Compact, bringing an aging unit back to full purification strength. A three-layer system starts with a primary filter that catches larger particles like dust, lint, and pet hair, followed by Xiaomi's High Efficiency Filter media, which traps fine allergens including pollen and PM2.5.

An integrated activated carbon layer rounds out the stack, reducing household odors and airborne pollutants from cooking, cleaning products, and everyday use. Sized and shaped to match the Compact's original equipment filter, it fits straight into the tool-free compartment without needing to recalibrate the unit.

Rated for 6-12 months of typical use, the filter's condition is tracked automatically through the Mi Home/Xiaomi Home app, which estimates remaining life based on daily usage and sends a reminder before it's time to swap in a new one.

• Genuine Fit: Purpose-built replacement for the Xiaomi Smart Air Purifier 4 Compact.
• 3-Layer Filtration: Primary filter, High Efficiency Filter, and activated carbon in one cartridge.
• Fine Particle Capture: Traps pollen and PM2.5 alongside larger dust and pet hair.
• Odor Control: Activated carbon layer reduces household smells and pollutants.
• 6-12 Month Lifespan: Rated for up to a year of typical household use.
• App-Tracked Usage: Mi Home/Xiaomi Home app estimates remaining filter life.

Specifications

• Compatible With: Xiaomi Smart Air Purifier 4 Compact
• Filtration: Primary filter + Xiaomi High Efficiency Filter + activated carbon
• Lifespan: 6-12 months
• Color: White
• Dimensions / Weight: Φ175 x 171mm, ~0.4kg