What does Volkswagen's air conditioning clean-air mean?

[IanMarie]

Volkswagen's air conditioning clean-air is an air purification function, including pollutants such as PM2.5. When the car owner turns on the internal or external circulation, the clean-air function will automatically activate. The air purification function can filter harmful gases, ensuring a clean air environment inside the car. Clean-air achieves air purification through the following materials: 1. Air conditioning filter with activated carbon: An additional activated carbon layer can adsorb more harmful substances on the filter, and the price of this filter is several times higher than that of a regular one. 2. Negative ion air purification: Plasma is generated through a high-voltage circuit, which destroys the protein membrane on the surface of bacteria, causing them to lose vitality and die, thereby achieving the goal of eliminating bacteria in the air.