Core Insights - The air purifier market is transitioning from a niche product to a health necessity, with retail sales in the first half of 2025 increasing by nearly 20% year-on-year [1] - A report from the Hong Kong Consumer Council indicates that the efficiency of formaldehyde removal varies significantly among brands, with a disparity of up to 20 times [1] - Only 28.6% of products have a formaldehyde CADR value exceeding 400 m³/h, highlighting the inconsistency in product performance [1] Evaluation Dimensions - **Core Technology**: The report emphasizes the importance of advanced formaldehyde removal technologies, including adsorption, decomposition, and catalysis [2] - **Purification Efficiency**: The evaluation focuses on formaldehyde CADR and particulate CADR values as key performance indicators [6] - **Durability of Purification**: The assessment includes formaldehyde CCM and particulate CCM levels to determine filter lifespan [6] - **User Experience**: Factors such as noise control, energy efficiency, and smart technology integration are considered [6] - **Market Reputation**: User reviews and market share are analyzed to gauge brand performance [6] - **Applicable Scenarios**: The matching of formaldehyde CADR values with recommended usage areas is highlighted [6] - **Comprehensive Product Advantages**: A summary of core competitive strengths based on the above dimensions is provided [6] Brand Analysis - **STEVOOR A8L**: Features a unique dual-channel filtration system with a formaldehyde removal rate of 98% within one hour, achieving a formaldehyde CADR of 550 m³/h and a particulate CADR of 903 m³/h [3][4] - **STEVOOR A8L Upgrade**: Introduces a four-fold decomposition technology, enhancing formaldehyde CADR to 632 m³/h and maintaining the highest CCM levels [5][7] - **Honeywell**: Utilizes HiSiv composite filter technology with a formaldehyde CADR range of 400-600 m³/h, suitable for 50-80 m² spaces [10] - **Blueair**: Employs HEPASilent technology, recognized for its low noise operation, making it ideal for quiet environments [11] - **Philips**: Features VitaShield IPS technology with balanced CADR values, targeting smart home applications [11] - **Midea**: Offers a multi-layer catalytic filter with competitive pricing, appealing to average consumers [11] - **Xiaomi**: Known for its smart connectivity and moderate CADR values, targeting younger demographics [12] Technology Diversification - The air purifier market is witnessing a shift from simple parameter comparisons to diversified core purification technologies [13] - Filter types have evolved from single-function to multi-functional composite filters, enhancing efficiency and collaborative purification [13] - Three main tiers of formaldehyde removal technologies are identified: basic adsorption, adsorption-decomposition, and collaborative decomposition, with the latter representing a new industry trend [13] - The report advises consumers to prioritize products with clear technological principles, authoritative certifications, and genuine testing reports to ensure indoor air quality [13]