A household air purifier is a device specifically designed to remove indoor air pollutants, aimed at improving the cleanliness and quality of indoor air. It usually has multiple functions, such as odor purification, dust removal, sterilization, and formaldehyde treatment, to meet the different needs of air quality in household environments.

Air purifiers play a crucial role in improving indoor air quality. Firstly, it can remove particulate matter such as dust and pollen from indoor air, reducing the risk of respiratory diseases. Secondly, air purifiers can remove microorganisms such as bacteria and viruses from indoor air, reduce the possibility of disease transmission, and provide a safe and healthy breathing environment for family members. In addition, air purifiers can also remove indoor odors such as smoke and pet odors, improve the indoor environment, and enhance living comfort.