Reasons why car air conditioners don’t blow cold air out

In the hot summer, you want the AC power of the vehicle to blow cool and fresh air to ensure your comfort and the comfort of passengers. There are many reasons why car AC power does not blow air-conditioning. Repairing the air conditioner may be simple, such as charging the car’s air conditioner refrigerant or repairing refrigerant leaks, but it may also require complex electrical climate control repairs or slipping of the compressor clutch to make the air conditioner operate at peak performance again.

Driver hand tuning air ventilation grille


Understand the vehicle’s communication system

The air conditioning system in the vehicle may be complicated due to the location of the hoses and lines. Essentially, your vehicle’s AC system compresses and heats the refrigerant, then decompresses it and condenses it into a liquid, causing it to quickly lose heat. This process absorbs the heat in the cabin and is repeated continuously to reach the required temperature.

When breaking down components, the basic concepts are easier to understand, as follows:

The auto ac compressor escapes from the belt of the engine that compresses or compresses the gaseous refrigerant.
After pressurization, the condenser will cool it down through a series of finned tubes and then return to a liquid state. The liquid will then pass through a dryer or receiver, which removes excess water, thereby eliminating the risk of freezing inside the AC system.
Next, the liquid refrigerant enters the evaporator through the thermal expansion valve, and then is exposed to heat from the passenger compartment in the evaporator. At this point, the fluid boils, reducing it to gas form again. During this process, the heat in the surrounding air is absorbed, causing the evaporator coil to cool. In the end, the blower redistributes it to the entire cabin through the ventilation holes to become cool, crisp air-conditioned air.
Almost every car has the same basic AC components. These components consist of a compressor, condenser, and evaporator, which can work together to stay cool in the warm summer. When any one of these components fails, you will feel uncomfortable and the rolled down window cannot be repaired.

The following are three reasons why your car is not air-conditioned:

#1 Your AC refrigerant needs to be charged
The most common cause of low vehicle air-conditioning temperature is the need to charge it. You can replenish the refrigerant yourself, but to save time and ensure that the work is done correctly, you should make an appointment with a local professional car shop.

#2 AC system refrigerant leak
When a refrigerant leak occurs in the AC system of a vehicle, it is difficult to detect because the refrigerant evaporates immediately when it comes in contact with the air. Professional technicians use special tools to show signs of low refrigerant pressure in the AC system by introducing ultraviolet fluid to determine whether there is a leak. Signs of refrigerant leakage in the AC system:

A clicking sound will be heard when the AC power is turned on.
AC switches frequently.
The AC system hissed (when the engine is off).
Residual oil around AC pipe fittings and hoses.
Refrigerant leak repair may include repairing or replacing specific faulty components. If a large amount of fluid is lost, the AC system needs to be flushed, and the refrigerant fluid needs to be replaced to make it operate normally and allow cold air to flow. *Please note that the refrigerant is a very harmful and toxic chemical substance, and it must not be processed unless trained professionals operate the appropriate equipment.

#3 Fan motor failure
Another common source of failure in automotive AC systems may be the fan motor located in the front of the car engine. Whether your car has one or two fans, the fans must be in good working order to maintain heat dissipation and provide important heat dissipation for the engine, which is very important.

Post time: Jan-28-2021