How to identify the advantages and disadvantages of air conditioner filter:
Function of air conditioner filter: The air filter is mainly used to filter various particles and toxic gases in the air passing through the air conditioning and ventilation system. Particles include: pollen, dust (more than 0.003mm), bacteria, soot (less than 0.001 mm). Toxic gases include ozone, nitrogen oxide, sulfur and hydrocarbons.

The genuine air conditioner filter has an activated carbon layer, which can better remove the odor in the car, so the price is several times higher than the counterfeit. The activated carbon is black, so we can easily see the huge difference between the genuine air conditioner filter and the counterfeit from the color alone.

The difference between structure and material: The authentic air conditioner filter adopts a three-layer structure - two layers of filter paper mixed with a layer of activated carbon. The activated carbon is fixed by the sticky substance on the filter paper. Sticky filter paper needs professional manufacturing technology to ensure good air permeability.

The two layers of filter paper of authentic air conditioner filter are made of different materials. The filter paper on the windward side has fine fibers, which can effectively filter impurities in the air in the car (the impurities mentioned here refer to dust and pollen with particle size of 5-100 microns). The filter paper fiber on the leeward side is relatively sparse, which mainly plays the role of fixing the activated carbon interlayer without reducing the air flow.

The counterfeit air filter adopts a two-layer structure - plastic mesh support and cotton layer. The cotton layer fiber gap used by counterfeit products is uneven, which is far inferior to filter paper in dust filtering capacity, and basically does not have the ability to filter dust. And because the counterfeit does not use the activated carbon odor absorption technology, it does not have the ability to remove odor. There is little difference between installing such a filter and not installing it. You can save dozens of yuan without installing it.

Difference on the outer package: The counterfeit air conditioner filter is printed with the air flow direction mark on the side, but the part number, brand, manufacturer and place of origin are not indicated, and there is no certificate of conformity. The authentic air conditioner filter is attached with the relevant production certificate, on which the production date and the seal of the quality inspector are clearly marked. The manufacturer's address, contact information and origin are detailed on the back of the package.