Causes of Car AC Not Cold at Low Rpm

You may have experienced a situation when the car was running, but the car air conditioner did not cool down, especially when the RPM was low. What do you think is the reason why the car air conditioner doesn't cool when the RPM is low?

Before finding out the possible causes of a car air conditioner not cooling at a low RPM, you must understand the basics of how a car air conditioner unit works first. This will help fix the problem so it's clearer.

The following is an explanation of how a car air conditioner works and the possible causes of a car air conditioner not cooling when the RPM is low.

How Does a Car Air Conditioner Work?

The air conditioning system in a car requires refrigerant to operate and consists of a compressor, condenser, evaporator, orifice tube and accumulator.

The compressor compresses the refrigerant into a liquid. As the gas is compressed, it heats up, and the high pressure forces the refrigerant to travel through the system to the condenser.

The condenser has a coil section through which cold air from outside is passed, thereby transferring heat from the compressed gas to the air. R

The refrigerant then passes through a dryer to remove the contaminants. Once purified, the compressed refrigerant passes through an expansion valve, where its pressure is removed. After passing through the evaporator, the refrigerant is now very clean, dry, and cold.

To create a blast of cold air coming out of the car air conditioner, the air is sent through this freshly cooled refrigerant in the compressor tank to be cooled and then exhaled through the blower.

the Cause of the Car Air Conditioner Is Not Cold

Well, now we will discuss what causes the car air conditioner to be less cold that you may experience when the RPM is low.

Usually, poor AC unit maintenance is the main cause of a car's air conditioner not cooling at low RPM.

Checking the system from time to time is very important to keep it in good condition. Let's see what else the possible causes of the car air conditioner are not cold.

1. Refrigerant Leak

Leaks in the refrigerant is the cause of the car air conditioner suddenly not cold. Actually, the refrigerant serves to keep the cabin cool. In many cases, it appears that a leak in the refrigerant is a common cause of a car air conditioner not working.

Such problems arise when the car has an unexpected accident. The AC hose was leaking from the joint and it was very difficult to pinpoint where the damage was.

An oily substance gathering around the hose indicates a refrigerant leak. In short, your AC refrigerant is faulty and you need to fix it.

It's better if you avoid doing it yourself, because you don't know how to deal with technical issues and that is the root cause of one such problem.

So, consider going to an authorized car mechanic to get it fixed before heading off for a long trip.

2. the Condenser Is Faulty

A faulty condenser is another cause that causes a car air conditioner to not work properly.

The condenser is a special unit in a car that keeps the refrigerant cool and then flows through the blower by converting the hot air into cold air.

The air blows through the AC vents that you breathe in the car. It is located in front of the grille. If there is a problem in it, you can diagnose it easily.

If there is a blockage and any debris or dust is found inside, the problem may be overheating of the car.

Hot air constantly blowing through the vents in your vehicle can damage the condenser if not properly cared for.

These problems take a heavy burden on the car air conditioner engine and can eventually affect the performance of the car air conditioner.

The best decision is to take the car to a professional auto repair shop that is authorized to repair similar car models.

3. Mushroom Buildup

When we tend to keep the car air conditioner on for a long time, small microorganisms can block the air conditioner vents.

These bacteria can block air conditioning vents and affect cooling procedures. When this happens, no matter how much you try, the ventilation is not working properly. That's one of the causes of the car air conditioner not cooling the cabin properly.

To avoid this, it is better to take the car for service at least after 5-6 months. Regular service not only cleans the AC duct, but also prevents dust particles and other microorganisms such as bacteria and fungi from growing and multiplying on a rapid scale.

This will maintain the durability of your car's air conditioner so that it adds a longer service life.

4. Electrical Problems

An unwanted short circuit in the electrical unit is another unexpected reason that causes a car air conditioner to stop working.

This has become a common problem in today's vehicles. When the temperature is hot, the power cord may become quite hot and cause a short circuit in the internal wiring.

To fix this, you can also take the car to an official repair shop to have it done. If your car insurance covers this, then you can sit back and let the experts do the work there.

Actually you can try to fix it yourself. But sometimes, you may not be able to diagnose the problem, and if you misplace or disconnect a cable while running a self repair job.

You can actually cause more damage to the electrical circuits installed in it.

5. Low Freon

Freon will be used when running the air conditioner. When the level is lower than the acceptable level, you will face the problem of the car air conditioner not cooling. Freon gets tired with the operation of the air conditioner.

When the level is lower than the acceptable level, you will face the problem of the car air conditioner not cooling when the engine is hot and the RPM is low.

The compressor can pump Freon more easily when the car is running at high speed on the highway, but struggles when the car is at low RPM.

Another sign of a low freon level is if you don't hear the clutch work when you turn on your vehicle's air conditioner. The clutch allows the compressor to compress the freon and work by reading the freon level.

6. the Fuse Blows

Burning and exploding fuses are another reason that affects the cooling of the car air conditioner. To diagnose the problem, the AC fuse must be replaced.

This problem not only stops the compressor, but also disperses the hot air in the cab.

Also, a single blown fuse can affect all the circuits installed in your car thereby affecting a healthy switch on the car's circuit board.

7. Compressor Is Broken

Compressors require a lot of power and energy to work fully functional. If the compressor becomes weak or wears out due to continuous use, then there is a lack of energy in the compressor causing the air conditioner to malfunction.

Compressor belts usually prevent this problem from occurring. The compressor belt usually drives the power and energy functions in the vehicle. When it malfunctions, the air conditioner doesn't work as expected.

It is highly recommended to have it repaired at an authorized auto repair shop or shop and replace the compressor belt as soon as possible.

Damage to these parts can reduce the life of the AC and also the life of your vehicle's engine.

8. AC Blower Is Broken

Faulty blower vents are another reason why a car's air conditioner is not cooling. That is one of the reasons why it is important to control the blower ventilation after a certain period of 6 to 8 months.

An easy way to realize how well an AC blower is working is to use your palm in front of the AC vent and feel the speed of the air flow in your hand.

If all else sounds good, the air conditioner is working fine. Otherwise, the blower will not rotate at the required speed and you will feel it in the palm of your hand.

That's when you need a mechanic to fix technical problems like this.

9. Engine Overheating

Another reason why the car air conditioner is cold at low RPM is the engine is too hot. Most cars have two cooling fans, one for the condenser and the other for the radiator.

The compressor of the AC system transfers heat from the radiator to the condenser. When the car is overheated and the fans in the radiator and condenser are not working properly for some reason, the system cannot cool the heat with maximum efficiency.

10. AC Actuator Is Faulty

When the AC actuator is damaged and stays in the vehicle for a long time, the hot air from outside weakens the effect of the AC and slows down the airflow in your car.

if you have small children, maybe when traveling with kids, they can turn on/off the AC switch. One of the pressures that often occurs in the engine can affect the air conditioning system in the vehicle, thereby damaging the condenser.

Sometimes the condenser becomes too weak and if it is not repaired or maintained for a long time, there is a higher chance that the condenser is faulty. That is the reason why a number of car owners come to authorized auto repair shops and service shops to repair their AC engines.

It's Important to Have Car Insurance

It is no secret that good car maintenance can extend the life or service life of our vehicles.

Well, this car maintenance is not just about the car engine and other parts maintenance, but even small things like the AC engine that need to be cared for.

However, some people may tend to forget and leave the car air conditioner only for use, but forget to take care of it. If that's the case, it's no wonder why the AC is so easily damaged.

Good AC engine maintenance will certainly make you more comfortable when driving.

Tips from Auto Insurance Agencies! Considering the cost of AC maintenance is also not cheap, you should have car insurance that can ease your financial burden.

Car insurance will cover the cost of repairing your problematic car, including a car air conditioner that is not cold.

You can buy insurance with affordable premiums with complete benefits. Make sure when buying car insurance you already know what facilities are offered and how to claim it.

Check the followingcar insurance premiums.