The Xiaomi Smart Air Purifier 4 Compact uses a 3-in-1 filter system and smart features to clean the air in small to medium-sized spaces. It is designed for energy efficiency and quiet operation, making it suitable for bedrooms, desktops, or other areas where noise is a concern
Core filter features
- Three-in-one filtration: The filter system combines a primary filter, Xiaomi’s High-Efficiency Filter, and an activated carbon filter.
- Primary Filter: Traps large particles such as dust, hair, and pet dander.
- High-Efficiency Filter: According to testing reported on the Xiaomi site, this component traps 99.97% of 0.3μm particles, including PM2.5, pollen, and other allergens. It combines electrostatic and mechanical filtration technologies to allow for a large airflow with less noise and lower energy consumption than standard HEPA filters.
- Activated Carbon Filter: Provides powerful absorption to eliminate unpleasant odors, VOCs, and other harmful gases.
- Allergen certified: The device is TÜV Rheinland Allergy Care Certified, confirming its ability to effectively filter allergens like pollen and dust mites.
- Long-lasting filter: Xiaomi recommends replacing the filter every 6–12 months, depending on usage. The Mi Home/Xiaomi Home app can also track the filter’s status.
