Why should the air purifier filter be replaced?
There are mainly passive and active air purification filters on the market. The passive type mainly absorbs and filters impurities in the air, thereby releasing fresh air. You need to monitor the filter usage in real time. The replacement cycle depends on the degree of air pollution.
If the filter is not replaced in time, the efficiency and cleanliness of the air purification will decrease. And bacteria, viruses and other contaminants will be deposited on the filter. After running, the fan is released into the air. It will cause secondary pollution. Therefore, it is very important to replace the air purifier.