The air conditioner of the car always smells, what should I do?

Hello, this is caused by the air conditioning air inlet pipe is too dirty, it is recommended to replace the air conditioning filter, and at the same time clean the air inlet pipe, I wish you a happy car [If you have a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

In this case, first replace the air conditioning filter, if it cannot be solved, the air conditioning system should be fully disinfected and cleaned.

I hope it can help you enjoy your car. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

The smell of the air conditioner in the car may be caused by mold in the air conditioner evaporator and bacteria accumulating and multiplying on it, and the air conditioner filter element may also cause the air conditioner to have a peculiar smell if it is not replaced for a long time. If the air conditioner is just turned on in the car and there is a peculiar smell, it is recommended to replace the air conditioner filter with a new one, or clean the original filter and then install it back in place.

The most likely cause of this is a problem with the aircon filter, as it blocks out some of the bulky debris and dust, which can cause unpleasant odors if they accumulate and mold over time.

Related Notes:Routine air conditioning system cleaning involves replacing filters, applying detergent, and removing the cleanup. Replacing the dust filter is the easiest way to do it, and it is inexpensive but can keep the air intake smooth, and car owners with a little mechanical knowledge can clean it up by themselves. Most small cars have dust filters under the front windshield and are covered by a flow tank.

When replacing the dust filter, you can first lift the engine cover, remove the clip that holds the flow tank, remove the flow tank, and the dust filter can be seen. If the dust filter has not been used for a long time, it can be cleaned with high-pressure air; If it's blocked, just take it off and replace it with an original dust filter, and then install it as it is.

Automobile air conditioning device is referred to as automobile air conditioner. It is used to adjust and control the temperature, humidity, air cleanliness and air flow in the car compartment in the best state, provide a comfortable riding environment for the occupants, and reduce the fatigue of the journey.

You only need to turn off the AC switch when you are about to reach your destination when you are driving, and dry the surface of the evaporation tank without turning off the hair dryer.

The odor emitted by the car air conditioner is related to the air conditioner evaporator, air conditioning filter element and air conditioning air duct.

Odors are mainly generated in air conditioner evaporators. Dark, damp, and warm are the three major conditions required for mold growth, and the air conditioning system has the above conditions, and almost all car air conditioners cannot avoid the growth of mold on the evaporator. Generally, after one or two years of use, the air conditioner will emit an unpleasant smell of rancidity.

In addition, if you do not change the air conditioner filter for a long time, the odor will become heavier. The position of the air conditioning filter is between the blower and the evaporator, the air conditioning filter is mainly to filter the air, and the air will reach the evaporator after the air conditioning filter, so the air conditioning filter plays the first protective role.

In addition to filtering dust, the air conditioner filter will also absorb odors, and if you do not change the air conditioner filter for a long time, not only the air volume will become smaller, but the odor will also become heavier; At the same time, the air conditioning duct is easy to accumulate dust, which is also one of the sources of odor in automobile air conditioning.

1. Air conditioning filter. The function of the air conditioning filter is very simple, mainly to filter the air conditioning outlet to prevent impurities from entering the cabin. However, if the air conditioning filter is seriously polluted, it will not only fail to protect the cabin environment, but will cause secondary pollution to the cabin air.

2. Evaporation box. When the evaporator is carrying out refrigeration work, it will produce moisture on the surface when it encounters relatively hot air from the outside world, and it is easy to adhere to impurities such as dust and flying insects, and in a long-term humid environment, fermentation, mildew, and bacteria breeding. When the air conditioner is turned on again, the fan will mercilessly blow these harmful substances into the cabin.

The main reason for the peculiar smell of the air conditioner is that the air conditioner has three major conditions for mold growth (i.e., warmth, humidity and nutrient source), therefore, after these stubborn impurities stay for a long time, the evaporation box of the vehicle will become a place for bacteria and mold to grow, therefore, every time the air conditioner is turned on, these bacteria and mold will enter the cabin with the air conditioning wind, and be inhaled into the human body, causing headache, fever, sudden sore throat, tonsil infection, asthma, flu symptoms, dermatitis and wounds that are difficult to heal and other adverse reactions. In severe cases, it will also make people feel uncomfortable such as dizziness and chest tightness. For example, when the air conditioning system is running, the water vapor in the air forms condensate on the surface of the condensation evaporator of the air conditioner, in which - - part of the water will remain in the evaporator and air conditioning pipeline after the air conditioner is turned off, and these moisture will combine with microorganisms and pollutants in the air to become a breeding ground for mold in the humid, warm and dark air conditioning system. Or because of the nicotine produced by the driver and passengers smoking in the car, and the smell of rubber, plastic and leather in the car, as well as the smoke, dust and exhaust fumes in the outside air enter the car and pollute the air conditioning system.

The main reason is that the air conditioning system has always been wet, in the air conditioning duct, the intersection of cold and hot air makes the water molecules in the air condense into water droplets, and the humid environment is most likely to breed bacteria and mold, resulting in musty smell.

Tips to prevent musty smell in your air conditioner.

Turn on the air conditioner in summer, and before stopping and turning off the engine, you should turn off the air conditioner compressor in advance and adjust the mode to external circulation. Let the hot air blow dry the moisture in the aircon air-conditioning tunnels, so that your aircon will never get damp and harbor bacteria, which can cause odors.

Specifically, a few minutes before arriving at the destination, the A C switch is turned off in advance, and the mode is adjusted to external circulation, so that the moisture in the air conditioning duct can be dried after a few minutes. If the air conditioning ducts are kept dry, there will be no breeding ground for bacteria, and the problem of odor will be easily solved.

Extended Materials:

Car Air Conditioner Type:

1. According to the driving mode, it is divided into: independent (a special engine-driven compressor, with large refrigeration capacity and stable work, but high cost, large volume and weight, mostly used for large and medium-sized buses) and non-independent (air conditioning compressor is driven by the automobile engine, and the refrigeration performance is greatly affected by the engine work, and the stability is poor, and it is mostly used for small buses and cars).

2. According to the performance of air conditioning, it can be divided into: single function type (refrigeration, heating and ventilation systems are installed and operated separately, do not interfere with each other, and are mostly used in large buses and trucks) and integrated cooling and heating (refrigeration, heating, ventilation share blowers and air ducts, which are controlled on the same control board, and can be divided into a combination of cold and warm air working separately and a mixed temperature control type that can work at the same time. Cars are mostly used with mixed temperature control).

According to the control mode, it is divided into manual type (toggle the function key on the control board to control the temperature, wind speed, and wind direction) and electro-pneumatic adjustment (using the vacuum control mechanism, when the air conditioning function key is selected, the temperature and air volume can be automatically controlled within the predetermined temperature).

3. According to the control mode, it can be divided into: automatic adjustment (using the calculation and comparison circuit, through the sensor signal and pre-setting signal to control the adjustment mechanism to work, and automatically adjust the temperature and air volume) and the automatic adjustment of microcomputer control (with the microcomputer as the control center, to achieve all-round, multi-functional optimal control and adjustment of the air environment in the car).

The on-board air conditioner is an air conditioning system consisting of a compressor, a condenser, a throttling element, an evaporator, a fan, and the necessary control components to regulate the temperature and humidity in the vehicle and provide a comfortable environment for the occupants.

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After purchasing a special air conditioner foam cleaner, take out the air conditioner filter of the air inlet of the car air conditioner, open the doors and windows, adjust the air conditioner to the highest setting, spray the cleaning agent into the air intake, and close the air outlet of the air conditioner at the same time to avoid the cleaning agent flowing out during operation. Start the car and let the cleaning agent circulate in the air conditioning system to ensure that the cleaning agent circulates to all channels of the air conditioning system, effectively cleaning the system, killing bacteria and refreshing the output air. After cleaning, the dirt in the air conditioning system will flow out of the air conditioning duct system located in the chassis with the cleaning agent, so it is recommended to replace the air conditioning filter with a new one or clean the original filter element and install it back in place.

The smell in the car needs to be solved by finding out the cause. Some car owners can get rid of it themselves. For example, after the car is turned off, continue to dry the air conditioner with maximum wind power for a few minutes, which can effectively remove mold in the air conditioning pipeline.

Frequent cleaning of the interior of the car to prevent water from entering the cabin can also effectively prevent mildew and odor. Some peculiar smells caused by mildew of automobile parts are recommended to be checked by experienced technicians and then replaced to solve them.

1. After the air conditioner is used all year round, the filter screen and copper sheet in the machine will squeeze a certain amount of dust, so that after accumulating to a certain amount, a certain odor will be generated, and with the air conditioner turned on, the air conditioner outlet odor will drift into the air.

2. In many cases, after the air conditioner is cooled or heated, there will be moisture inside the indoor unit; When the air conditioner is turned off, some air conditioners that do not have the function of drying and mildew prevention will be shut down immediately, so that the internal moisture will always exist, and mold will definitely be produced after years of accumulation, and the production of strange smells is a natural thing.

1. Affect the health of the indoor environment.

2. Excessive dust and other backlogs will seriously affect the refrigeration and thermal efficiency of the air conditioner, and also increase the power consumption of the air conditioner.

In fact, in this case, if the service life of the air conditioner is not very long, and there is dust in the panel and air outlet, the user only needs to wipe it by himself, and open the panel to remove the filter screen for clean water flushing can simply solve the problem of odor.

Reason analysis: The refrigeration principle of air conditioning is to absorb heat through the rapid evaporation of refrigerant, so that the temperature of the air flowing through it drops rapidly. Since the temperature of the evaporator is low and the air temperature is high, the particles of water molecules in the air will condense into water droplets on the evaporator, while dust or clothing in the air.

Substances such as small fluff on the seat tend to adhere to the surface of the condenser, which can lead to mold and bacteria.

Solution: Long-term inhalation of such air by the human body will affect the health of the driver and passengers, so the air conditioning system should regularly replace the air conditioning filter and clean the air channel.

1. The smell in the air-conditioned car is the accumulation of dust in the air-conditioning filter and the musty smell after the air-conditioning pipe is damp and moldy.

2. Replace the air conditioner filter regularly: The air conditioner filter is usually replaced for 1-3 years, if the dust in the use environment is too large, or if there is a peculiar smell, it should be replaced in time.

3. Clean the air conditioning pipes: Use foam cleaning agent and clean the air conditioning pipes according to the usage method to reduce the odor of the air conditioner.

4. Don't turn off the engine directly when the air conditioner is turned on: In the process of using the car, when you are about to reach the destination, turn off the AC first, maintain the air volume, let the water in the pipe evaporate and then turn off the fire, so as to avoid the air conditioning pipe from getting wet.

In order to remove the odor of the air conditioner, we must first know that the root cause of the odor is in the first place, in which the evaporator is an important part of the air conditioning and refrigeration system, the evaporator will produce moisture on the surface when it exchanges heat with the outside world, and it is easy to adhere to impurities such as dust and flying insects, and it will mildew and breed bacteria in a long-term humid environment. Another reason is that the air conditioning filter and air conditioning duct are polluted, which not only cannot protect the cabin environment, but will pollute the air in the car for the second time. So we can deal with those two points.

The smell of the air conditioner may also be the cause of the internal ducts of the air conditioner, but since the pipes themselves cannot be removed, we need to use a special foam cleaner, which can be purchased online. The operation is also very simple, because the air conditioning ducts are all interconnected, so you only need to spray the cleaning foam into the air conditioning outlet in the car, it is worth noting that each air outlet has to be sprayed some. Spray and wait for a few minutes to let the foam dissolve the stains in the pipe, then turn on the external circulation blowing mode, adjust the wind to the maximum to blow off the foam.

Finally, turn to the hot air and blow for a few more minutes, and dry the water in the pipe.

First of all, the reasons for the peculiar smell after the air conditioner is turned on are:

1. After the air conditioner is used all year round, the indoor filter and copper sheet will squeeze a certain amount of dust, so that after accumulating to a certain amount, a certain odor will be generated, and the air conditioner will be blown into the air with the air conditioner turned on.

2. Because the air conditioner is refrigerated and heated, in many cases, there will be moisture inside the indoor unit, so when the air conditioner is turned off, the air conditioner without dry and mildew prevention function will be shut down immediately, so that the internal moisture has always existed, and mold will be produced in the long run, and the musty smell will naturally occur.

Knowing the reason, then how do we get rid of odors?

1. If the service life of the air conditioner is not very long, and there is dust in the panel and air outlet, the user only needs to wipe it by himself, and open the panel to remove the filter screen for clean water flushing, which can simply solve the problem of peculiar smell.

2. If the air conditioner is used for a long time and the user cannot simply clean it by himself, we need to contact the after-sales service to clean the air conditioner in time to make the air conditioner more healthy and fresh.