定期养护和更换耗材是非常重要的，研究发现长期未进行维护的空气净化器内部积累了大量灰尘，毛发等适合细菌病毒滋生的环境，成为了二次污染源，细菌病毒的数量远超过自然空气。所以若不进行后期的维护的话，再好的机器，最长6个月之后就无法使用了。
Regular maintenance and replacement of consumables is very important. It is found that a large amount of dust and hair accumulated in the air purifier which has not been maintained for a long time, which is suitable for the environment where bacterial viruses grow, has become a secondary source of pollution. The number of bacterial viruses far exceeds that of natural air. So if it is not maintained later, the best machine can not be used for up to six months.