Car air conditioners: Causes of damage, repair methods and replacement prices

Car air conditioners: Causes of damage, repair methods and replacement prices


If you see the car’s air-conditioner squealing, not shutting off or shutting down continuously, it means the air conditioner is malfunctioning and needs to be checked and repaired soon.

Air conditioner block (also known as cold block, compressor, compressor) is one of the most important parts in the system. car air conditioner. This is the part that undertakes the first stage in the operation of the car air conditioner. Specifically, the air conditioner helps to compress the refrigerant from low pressure to high pressure and then transfer it to the outdoor unit.

The car air conditioner helps to compress the refrigerant from low pressure to high pressure and then transfer it to the outdoor unit
The car air conditioner helps to compress the refrigerant from low pressure to high pressure and then transfer it to the outdoor unit

From the outdoor unit, the refrigerant turns into a liquid and enters the throttle valve. At the throttle valve, due to the sudden decrease in pressure, the refrigerant will vaporize, transfer to the indoor unit and be blown out, bringing cool air, helping to reduce the temperature in the car.

It is difficult to determine the exact life of the car air conditioner. Because it depends on many factors such as: working intensity, working capacity of the entire car air conditioning system, quality of refrigerant gas, care and maintenance work, habit of using air conditioning of people use…

Structure and working principle of car air conditioner

Table of contents


The structure of the car air conditioning block includes: electronic clutch, rotating disc, cam rotor, side arm, piston …

The principle of operation of the car air conditioner: The car air conditioner is driven by a belt connected to the engine and magnetic clutch. The chiller operates through direct control from the A/C switch. When the user presses the A/C button, the magnetic clutch will activate the rotating refrigerant block. Low pressure car air conditioner gas enters the compressor. Compression takes place. Then the high-pressure vapor refrigerant is transferred out and sent to the outdoor unit to perform the next liquefaction step.

See more:

  • When to change the car air conditioning gas filter?
  • Experience cleaning car indoor units
Construction of car air-conditioner
Construction of car air-conditioner

Signs of damaged car air conditioner lốc


As an important part, performing the first step in the process of generating cold air, when the car air conditioning block fails, the entire operation of the air conditioning system is also affected. Here are the most common signs of a damaged car cooler:

  • Car air conditioner not working
  • Car air conditioner on/off continuously
  • Car indoor unit when running or not
  • Car air conditioner makes a noise (because the air conditioner block is loud)
A malfunctioning car air conditioner will affect the entire operation of the air conditioning system
A malfunctioning car air conditioner will affect the entire operation of the air conditioning system

The cause of the car’s air conditioning block is damaged


There are many causes of air conditioner problems, most of which are:

Poor quality gas refill

Poor quality car air conditioning gas refill is one of the main causes of failure in the air conditioner block. Currently, there are many places to recharge car refrigerant cheaply. Gas quality in these places is often unsatisfactory and can be mixed with many types of gas. When used, it will affect the operation of the air conditioner block because this is the part that compresses the refrigerant gas.

Poor quality car air conditioning gas refill is one of the main causes of failure in the air conditioner block
Poor quality car air conditioning gas refill is one of the main causes of failure in the air conditioner block

Lack of lubricating oil

Low amount of lubricating oil also causes the car air conditioner block to malfunction due to mites. The cause of the car’s air conditioner block is lack of lubricating oil usually because the system is open.

Overworked

There are many reasons why car air conditioners are overloaded. In which, it is often because the outdoor unit is dirty, the cooling fan is damaged or not working properly, the air conditioner is lacking gas …

The front clutch has slipped

If the intake flange is warped or worn, the weak suction power of the electromagnet will also cause damage in the air conditioner block. In addition, the inhaler flange is misaligned after repair, which also affects the operation of the car air conditioning block.

The roller head ball is damaged

Damaged roller head ball can be caused by not being regularly maintained, using poor quality oil, etc.

No regular maintenance

The air conditioner block makes a loud noise when the bearings next to the air conditioner spark plug are damaged or the air conditioner block bearings are damaged. Most of the above causes stem from the fact that the car air conditioner block is not maintained regularly.

Failure to do regular maintenance can cause the car's air conditioner to malfunction
Failure to do regular maintenance can cause the car’s air conditioner to malfunction

The car’s air conditioning control system has a problem

A malfunction in the car’s air conditioning control system can also cause the compressor to lose its ability to automatically shut off, causing the car’s air conditioner to not shut off automatically.

Repair car air conditioner lốc


To repair the car air conditioner, it is necessary to find out the exact cause of the malfunction of the air conditioner. Repairing a car air conditioner does not only require an understanding of cars, but also needs to know about refrigeration technology. Therefore, when detecting a problem with the car air conditioner, the car owner should soon take it to the workshops specializing in car air conditioning repair, car air conditioning repair or the company’s garage to check and handle.

When detecting a problem with the car air conditioner, take the car to check and handle it as soon as possible
When detecting a problem with the car air conditioner, take the car to check and handle it as soon as possible

Price of car air conditioner


On the market, there are many different types of car air conditioners, originating from many different brands. The price of a car air conditioner also has many levels depending on the model, model and model of the car, manufacturer, origin… Most of the prices of car air conditioners fluctuate widely in the range of 2-7 million VND. Small cars are as cheap as cars Kia Morning, Hyundai i10, Toyota Vios… usually have a fairly “soft” air conditioner price, ranging from 2 to 5 million VND.

The price of car air conditioners ranges from 2 to 7 million VND
The price of car air conditioners ranges from 2 to 7 million VND

Experience prolonging the life of the car air conditioner


The scientific use of car air conditioners will both ensure your health and help prolong the life of the car air conditioner in particular and the car air conditioning system in general, while saving money. a significant fuel level.

When the A/C button is turned on, the air conditioning system will immediately operate. However, the air conditioner should only be used after starting the engine and turning off the air conditioner before turning off the engine. It is best to turn off the air conditioner, turn on the fan mode for 2-3 minutes before turning off the engine. This will prevent the indoor unit from getting moldy, thereby avoiding the situation Car air conditioner smells bad. It is not recommended to leave the air conditioner in high capacity when the vehicle is under heavy load, climbing steep slopes, etc. to avoid overloading the air conditioner.

It is recommended to use mode get the wind in the car when moving in a city or a polluted, dusty area. Because if you choose the mode to take the outside air, the smoke and dust will make the filter and the indoor unit at the front of the car work a lot, which also affects the life of the car air conditioner and the air quality in the car.

Pay attention to periodically check car air conditioner gas, check, maintain and clean the car system periodically every year or every 20,000 – 30,000 km. This will help the air conditioning system work more smoothly and efficiently, avoiding the situation of the air conditioner having to work too hard.

Pay attention to check, maintain and clean the car system periodically
Pay attention to check, maintain and clean the car system periodically

During use, if you see abnormal signs in the car air conditioner such as the car air conditioner is not cool, the cold is weak, the cooling is slow, the car air conditioner block is loud, the car air conditioner block is constantly on and off. Car’s air conditioner doesn’t shut off… Please turn off the air conditioner and take the car to check as soon as possible. Because if you deliberately continue to use the air conditioner, it can cause more serious damage and costly repairs.

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