Explaining the reason why the air filter is clean but the car's air conditioner is not cool

Experts say there are many reasons why the air conditioner is not cool such as: Lack of gas, the condenser is covered with a lot of dirt and cannot dissipate heat, the condenser fan does not run or runs weakly, the condenser is covered with thick dust so the fan cannot blow air through, the air conditioner's compressor is weak or broken or the temperature sensor...

Therefore, when the air conditioner filter is clean but the car is not cool or the air conditioner has an unpleasant smell, the car owner needs to take the car to car dealers, service and maintenance centers to have technicians check, determine the cause and find a solution.

Reasons why car air conditioner is not cool

Even though the air conditioner is turned on at the highest setting, the car's air conditioner is still not cool or cools poorly. So what is the cause?

Dirty condenser and evaporator

If you find that the car air conditioner is not cool enough, it may be due to dirty condenser and evaporator. A dirty condenser will lead to poor heat dissipation, reducing the cooling efficiency of the gas. If the evaporator is dirty, the cold air will not be able to spread around to the car compartment. If the car air conditioner is not cool enough, you need to clean the condenser and evaporator.

Dusty air conditioner filter

Dust stuck on the filter that is not cleaned regularly is one of the reasons why the car's air conditioner is not cool. Therefore, it is necessary to check the air conditioner filter and clean it to ensure the cooling capacity of the system is always stable. In addition, users should change the air filter every 16,000 to 24,000 km.

If the vehicle is frequently operated in a dusty environment, the air filter should be cleaned weekly and replaced in a shorter period of time.

Lack of gas, air conditioner gas leak

The car's air conditioner is sometimes cool, sometimes not cool, or the air conditioner is not cooling well, it may be due to lack of gas. When the car's air conditioner runs out of gas, you will see the gas line bubbling and bubbling. You need to check and refill the car's air conditioner with gas, or even replace it with new gas.

The reason why the car's air conditioner is not cool can also be due to a gas leak. If you detect signs of a gas leak, you need to take the car to a garage for inspection.

Overcharge of refrigerant

The reason why the car air conditioner is not cool can also be due to overcharging of refrigerant. Overcharging of refrigerant, the gas tank pressure is higher than normal, causing the compressor to shut down. To know if the air conditioner is overcharging refrigerant or not, you should check if the compressor is constantly turning on and off.

Dirty gas filter will reduce the filtering efficiency, clog the refrigerant, and even clog the refrigerant.

Thermal relay problem

A faulty thermal relay causes the system to miscalculate the temperature. A faulty thermal relay is therefore one of the reasons why the car's air conditioner is not cool. Car owners should check the electrical system as well as the relay to determine the cause and fix it.

Compressor belt is broken

Car air conditioners that lose cooling can be caused by a broken compressor belt. The belt in the compressor is responsible for transmitting power, helping the machine operate, but when it has a problem, the car will not be able to start and the air conditioner will not cool.

Another cause could be a blown fuse that affects the operation of the compressor. This is the reason why the car air conditioner does not cool even though it starts.

Engine overheating

Poor cooling of car air conditioner, car air conditioner is sometimes cool and sometimes not cool, may be due to engine overheating causing the radiator fan to work inefficiently. Engine overheating causes the condenser to operate improperly, the car emits hot air, the cooling capacity of the air conditioner is sometimes good and sometimes not.

Thus, when seeing that the car air conditioner does not cool deeply or the car air conditioner is not cool, the car owner can rely on the above signs to determine the damaged part. In cases that cannot be fixed at home, the car owner can take the car to the car care garage for inspection and repair.

How to use car air conditioner properly

To ensure the device always operates durably and limits damage, car owners should note the following:

Turn on the car's air conditioner after starting the car: The car's air conditioner will reduce its lifespan if you turn it on before or at the same time as starting the car. This causes the battery to consume a lot of energy and is easily damaged. In addition, when moving in flooded areas to avoid dirt from entering the fan and damaging the device, car owners should turn off the car's air conditioning system.

Regular cleaning and maintenance: If the vehicle is often driven in a dusty environment, the owner should check and maintain the air conditioning system regularly to promptly handle damage as well as save a large amount of fuel consumed by the vehicle.

Turn off the air conditioner before turning off the engine: This helps the car save fuel and avoid using too much electricity from the battery. In addition, turning off the air conditioner and opening the door about 5 minutes before stopping the car will help the car cabin to be airy, limit mold and bad odors in the car.

Choose the appropriate temperature and fan mode: When using car air conditioner, you should choose the appropriate temperature and fan mode to save energy. To reduce the load on the air conditioning system, you should combine the use of air conditioner with fan.