Is air purifier useful?

Does smog come and air purifiers work? This is the voice of many consumers. It means that the meaning of the air purifier, meaning how to choose, and how to use it, will help you identify the air purifier.
For different pollutants, the air purifier is constantly circulating indoor air and adopts some means to adsorb the pollutants in the air on the filter screen, and then discharges the filtered air to achieve the purpose of purifying the air.
To measure the purification capacity of air purifiers, we cannot look at the strength of the filter or activated carbon alone, but look at the overall performance. We must learn to look at the parameters to see if it is good or bad.
Being in an indoor environment where the purifier is turned on is equivalent to wearing a new national standard A-class mask with a protective effect of not less than 90%; but in a room without an air purifier, it is equivalent to an ordinary mask without any effect. .
It is recommended to configure an air purifier in one room. If it is used in multiple rooms, the larger the space environment, the less effective it will be because the purifier has limited power and cannot be used in large spaces.
In general, the air purifier is generally used in a small space. It does not need to be installed. If the space is large and the environment is harsh, you can consider installing a fresh air system so that it can meet the demand.