Does an air purifier need to be indoors in a haze day?Car Air purifier price

　　Does an air purifier need to be indoors in a haze day?

　　When the air is polluted, using an air purifier indoors is the main method for everyone to protect against smog. Air purifiers are generally used to purify air pollutants.

　　Can you buy an air purifier? Take a look at the following statement!

　　1. Smog cannot escape indoors.

　　Scientific experiments have proved that in most cases, even without opening the doors and windows, the indoor PM2.5 concentration can reach 0.7-0.8 times the indoor concentration.

　　2. The air purifier is still very effective against particulate matter.

　　In offices and homes where air purifiers are used, the purification time required for the mass concentration of PM2.5 to drop from 150μg/m3 to 75μg/m3 is within 45 minutes. The greater the CADR value of the purifier, the required The shorter the purification time; generally one hour can reduce the indoor P2.5 concentration by two-thirds.

　　3. Turn off the air purifier and the haze will still come back.

　　After the air purifier is turned off, even if the doors and windows are not opened, the PM2.5 concentration in the room will gradually rise, and most of them will return to the level before purification after closing for one hour.

　　Therefore, air purifiers are needed even indoors in smoggy days.

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