For an air purifier, its purification efficiency is faster than that of pollution sources, and the more cycles in the same time, the higher the efficiency. Usually, it is required to clean at least five times per hour to be effective.

The function of the air purifier is also related to its CADR value (CADR value is the ratio of clean air output by the air purifier tested by the American Household Appliance Manufacturers Association according to strict testing standards). This value is the number of times the car is cleaned every hour after the purifier removes the space inside the car.

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There are many kinds of car purifiers, and the needs of car owners are also different. How to choose a car purifier suitable for your own car is the key to solve the car environment.

According to the working principle, it can be divided into physical filtration and electrostatic adsorption. Physical filtration uses a fan to suck air, but the filter screen should be replaced regularly and there is noise when working. Electrostatic adsorption means that particles in the air are adsorbed by a powerful electrostatic adsorption fan. The disadvantage is that harmful gases such as formaldehyde cannot be filtered and need to be cleaned regularly. Many air purifiers are multifunctional, and there are various types of filtration methods. These products are relatively large in size and power consumption, but they are also relatively good choices.