Everyone chooses to turn on the air conditioner in the car when driving. If the air coming out of the air conditioner has a peculiar smell, a bad smell, or an unpleasant smell, everyone will have a headache. So how is the odor of car air conditioner generated, how to remove it, and what good habits should be developed in the process of using car air conditioner, in order to effectively avoid the generation of car air conditioner odor.

The car air conditioner has a peculiar smell

Many car owners will encounter this problem. After turning on the car air conditioner, there will not only be a cool breeze, but also an unpleasant odor. So what is the problem that causes the air conditioner to emit an odor?

Reason 1: The root cause of odors in automobile air conditioners is generally the evaporator of the refrigeration system. The evaporator is the place for refrigeration and vaporization. It is the vaporization of the refrigerant that absorbs a lot of heat, thereby producing the cooling effect of the air conditioner. However, as the air temperature decreases, a large number of water droplets condense on the evaporator. In addition, the evaporator itself also has the function of air filtration, so there will be impurities in the air of the condensed water. Causes car air conditioners to produce odors.

Reason 2: New cars should always open the windows for ventilation, because the new car's evaporator will use chemicals such as glue during assembly, which will emit peculiar smells from the air duct and pollute the air in the car.

Reason 3: When the car air conditioner is running normally, these impurities will be discharged out of the car with the water, but a small part will remain on the evaporator. When the air conditioner stops working, there will also be condensed water on the evaporator that is not removed. This moisture can combine with dust, viruses, and fumes in the air, and over time mold can grow, causing car air conditioners to develop unpleasant odors.

Reason 4: Sometimes there is an odor in the air conditioner, which is probably related to the owner's habit of using the air conditioner. It is recommended that car owners turn off the air conditioner 5 minutes before arriving at the destination, and then turn on the natural wind. In this way, the temperature in the air-conditioning duct can be returned to the temperature before the shutdown and returned to the normal temperature. After shutdown, the water droplets will not condense in the air-conditioning duct due to the temperature difference, so that the drying of the air-conditioning duct is hindered. Prevents the growth of mold and fungus. Car owners may wish to develop this good habit.

What should I do if my car air conditioner smells bad?

Method 1: The car is basking in the sun. Drive the car into the sun, put the air conditioning system in the warm wind block, then turn on the air volume to the maximum, open the doors and windows, and let it dry in the sun for more than ten minutes. First, ultraviolet rays can be used to sterilize the interior of the car; second, the hot air can thoroughly circulate the dirty air in the air supply duct. The advantage is that deodorization can be done without spending a penny, but only for weaker odors in the car.

Method 2: If the odor of the car air conditioner is serious, it is a good choice to return the vehicle to the shop for professional cleaning. Car owners can choose different projects according to the use time and actual situation of the vehicle. Ducts and evaporators are parts that need cleaning. The air conditioner filter should also be replaced in time according to the usage.

Method 3: Regularly clean the air conditioning system. The most effective step is to replace the air conditioner filter. The air conditioner filter is located near the air conditioner air intake. Owners with a little mechanical knowledge can disassemble and replace by themselves. The air conditioner filter is located just below the left side of the dashboard in front of the passenger seat. The owner can bend over and touch a casing, remove the casing, and remove the air conditioner filter. After parking the car in a place with good air environment, turn on the external circulation switch, turn the air conditioner to the natural ventilation block, and then spray the cleaner evenly into the air duct of the air supply port. After a few minutes, open the windows and turn on the air conditioner for thorough ventilation.

Method 4: To clean the car air conditioner by yourself, first choose a can of air conditioner cleaning agent. Before sanitizing, remove food and paper towels from the car to avoid absorbing odors. Start the car, locate the A/C intake and remove the filter. Put the towel at the air outlet to prevent the air conditioner cleaning fluid from flowing out. Then open the window, adjust the cooling capacity and air volume of the air conditioner to the maximum, adjust the circulation block to the outer circulation, and then start to inject the air conditioner cleaning agent into the strongest position of the air intake of the car. After all the cleaning agent is injected, turn off the air conditioner and let it stand for 10 minutes. After 10 minutes, turn on the air conditioner again and adjust the air output to the maximum for more than 10 minutes. At this time, people will find that dirty water is slowly flowing out from the bottom of the car. In fact, the dirty liquid inside the air conditioner is drained from the car through the drain pipe.