Physical air purifiers use high-efficiency filtering materials such as HEPA filters, which can effectively remove large and small particles such as dust, pollen, and bacteria from the air. The physical filtration method is mature and stable, and is not prone to secondary pollution. But the filter needs to be cleaned or replaced regularly, which increases the cost of use. Some products may produce significant noise during high-speed operation.

Modern air purifiers are often equipped with air quality monitoring sensors, which can monitor indoor air quality in real time and automatically adjust the working mode based on the monitoring results, achieving intelligent management. In order to meet the needs of household use, air purifiers are designed with a focus on low-noise operation, ensuring that they purify the air without disturbing the rest and work of family members.