Xiaomi Anti-Formaldehyde S1 Air Purifier Filter

Compatible with Xiaomi Mi Air Purifier 1S, 2H, 3H, and Pro models, this filter removes PM2.5 and industrial odors.

Features a three-stage structure: primary mesh filter, H11-grade HEPA for fine particles, and catalytic activated carbon designed to decompose formaldehyde and benzene.

Formaldehyde CADR is approximately 66% higher than standard filters, and chiffonization occurs in just about 12 minutes.

Activated carbon sourced from coconut effectively absorbs VOCs including ammonia and hydrogen sulfide, while HEPA captures pollen, dust, and particles down to 0.3 µm.

Filter has RFID chip enabling real-time usage tracking via Mi Home app and is recommended for replacement every 3–6 months depending on air quality.