Why Is My Aircon Not Cold? 6 Common Problems and How to Fix Them

If your aircon is not cold, a few common problems could be causing the issue. In this blog post, we will discuss six of the most common issues and how to fix them. Keep reading for helpful tips on how to get your aircon working correctly again!

Dirty Condenser Coils

A common reason your air conditioner isn’t blowing cold air is that the condenser coils are dirty. The coils are located outside, and over time they can become covered in dust, pollen, and other debris.

When this happens, the coils can’t effectively transfer heat, causing the air conditioner to work harder than necessary. In some cases, the coils may need to be cleaned with a brush or compressed air.

However, if they’re severely caked with grime, it’s best to call a professional for help. Cleaning the condenser coils is a fairly simple process, but it’s essential to do it safely and correctly to avoid damaging the unit.

Busted Compressor

The compressor is the essential part of an air conditioner, and it is responsible for circulating the refrigerant throughout the system. If the compressor is not working properly, the air conditioner will not be able to cool the air effectively.

One way to tell if the compressor is faulty is to listen for a hissing noise when the air conditioner is turned on. If you hear this noise, there is a leak in the system.

To fix this problem, you will need to replace the compressor. However, if the compressor is completely damaged, you may need to replace the entire air conditioner.

Small Air Conditioning Unit

One of the most common reasons why air conditioners are not cold enough is that the unit is too small for the room it is supposed to be cooling.

This is a particularly common problem in homes, where the unit may have been chosen for its aesthetics rather than its cooling power. A small air conditioner will struggle to lower the temperature of a large room and will often freeze over as it tries to compensate.

If your air conditioner is not cold enough, it is worth checking the size of the unit and ensuring that it is powerful enough to cool your entire home. To achieve the desired results, you may need to upgrade to a larger model (See the best aircond in Malaysia).

Air Filter Clogging

The air filter in your indoor unit is responsible for trapping dust, pollen, and other airborne particles, and over time it can become clogged with debris. When this happens, airflow is restricted, causing the unit to work harder to circulate air.

As a result, the unit may begin to blow warm air or stop working altogether. It’s important to change the air filter regularly to prevent this problem. Depending on the type of filter being used, it may need to be changed every month or two.

However, if the filter becomes excessively dirty, it should be changed more frequently.

A Faulty Thermostat

The thermostat is responsible for regulating the room’s temperature, and if it is not working correctly, the aircon unit will not be able to maintain the correct temperature.

A few signs indicate that a thermostat is not working properly, including poor airflow and uneven cooling. If you suspect that your thermostat is not working correctly, it is crucial to have it checked by a professional as soon as possible.

In most cases, a simple adjustment can fix the problem and get your air conditioning system blowing cool air again.

The Aircon Coolant Is Leaking

The coolant is what helps to transfer heat away from the air, so if it’s leaking, the air won’t be cooled as effectively. A few things can cause a coolant leak, such as a hole in the evaporator coil or a loose connection in the tubing.

If you suspect that your air conditioner’s coolant is leaking, it’s important to have it checked by a professional as soon as possible. Otherwise, you may end up damaging your AC unit beyond repair.

Dirty AC compressor

Your air conditioner might not be blowing cold air because the AC compressor is dirty. The compressor at the outdoor unit is responsible for moving refrigerant around the AC unit, and if it becomes dirty, it can’t do its job properly.

When the compressor can’t circulate the refrigerant, the air that is blown into your home won’t be as cold. You can clean the AC compressor yourself with a brush and some soapy water, or you can hire a professional to do it for you. Either way, it’s important to keep the compressor clean so that your air conditioner can function properly.

Common FAQS on AC not Blowing Cold Air

I can’t adjust the temperature of my aircon lower; what could be the problem?

If you find that you can’t adjust the temperature of your air conditioner lower, there are a few potential explanations.

First, check to see if the unit is on “heat” mode instead of “cool” mode. If it is, simply switch it back, and you should be able to adjust the temperature as desired. Another possibility is a dirty air filter.

A clogged air filter can restrict airflow and prevent the unit from cooling effectively. Just clean or replace the filter and see if that solves the problem.

Finally, the condenser coils may be dirty. These coils help to transfer heat away from the unit, so it will be harder for the unit to cool down if they’re covered in dirt and dust.

Can you fix the aircon not cold problem with standard aircon servicing?

Yes, you can fix the aircon not cold problem with standard aircon servicing. The first thing that the service technician will do is to check the Freon level in your air conditioner unit.

If it is low, he will recharge it. He will also check the air filter and the evaporator coil. If the air filter is dirty, he will clean it or replace it.

After doing all these checks, he will run a test on your air conditioner to make sure that it is working properly. So, if you have an aircon not cold problem, just call a technician to fix the problem.

Why doesn’t my air conditioner cool at night?

One possibility is that the temperature outside is cooler at night, which means that the air conditioner doesn’t have to work as hard to cool the home’s interior.

Another possibility is that the air conditioner may be set to a higher temperature at night, which will cycle on less often.

Finally, it’s also possible that the air conditioner isn’t sized correctly for the space it’s cooling, and it can’t keep up with the demand when the temperature is lower. In any case, you can try adjusting the thermostat to see if that makes a difference.

If my aircon is not cold, does that mean I need a new one?

It’s possible that your air conditioner just needs a tune-up. Over time, the filters will become clogged, the coils will get dirty, and the refrigerant levels will drop. These things can cause your air conditioner to work less efficiently and produce less cold air.

A professional technician can clean or replace the filters, clean the coils, and recharge the refrigerant to help your air conditioner run more efficiently. If your air conditioner is old or damaged, it may be time for a new one. But in most cases, a tune-up can restore your air conditioner to its former glory.

Final Thought

By diagnosing the problem and addressing it accordingly, you can usually get your AC unit up and running again to blow cold air again.

If you’re still having problems with your aircon not blowing cold air after trying the tips mentioned above, it might be time to call in a professional. A technician will be able to diagnose the problem and recommend a solution, so don’t hesitate to get in touch if you’re not sure what to do.

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