How to deal with the smell of car warm air

The heated air in the car smells, and the most common solution is to replace the air filter. If the smell still exists, it is necessary to clean the empty regulating tube. There are several reasons why car warm air smells: 1. Because there is an evaporator (also called an evaporation box). The warm air of the car mainly comes from the heat of the water tank, which is in the evaporator. Warm air is the cooling system of the engine. In the process of cooling the engine, heat is blown into the cab by the blower. If the time is long, there may be a small amount of moisture and dust attached to the evaporator, and the evaporator will be moldy and produce odor. 2. The air-conditioning duct has an odor. The air conditioning duct smells bad because it is damp and moldy. It is recommended to turn off the AC switch 2 minutes before shutdown, and turn on the external circulating air to continue blowing until shutdown. This method can dry the moisture in the air duct and prevent mildew. 3. The empty filter element smells. Empty filter elements have a service life and are usually replaced every two years. Otherwise, it will be moldy after a long time, leading to odor. And after a long time, the bacteria inside will gradually accumulate, which is not good for human health.