Why Is My Aircon Not Cold and How To Fix It?

Have you ever wondered why your air conditioning system does not provide cold air even after servicing it? It can be frustrating and uncomfortable, especially during those scorching hot days when you rely on your aircon to keep your home or office cool and refreshing.

This article will explore the common reasons why your aircon is not cold and provide you with practical solutions to fix the issue. By understanding the underlying causes and implementing the necessary repairs or maintenance, you can enjoy the cool, crisp air you deserve.

If you continue to experience problems, it may be beneficial to arrange for a professional air conditioning cleaning service to guarantee your system’s optimal performance and cleanliness.

Common Reasons Why Your Aircon Is Not Cold After Servicing and How to Fix It

It can be frustrating and inconvenient if your air conditioner is not blowing cold air even after getting it serviced. Here are some common reasons why this may occur and how to fix aircon not cold:

1. Inconsistent Power Supply

Simple issues like an irregular power supply can disrupt the cooling process of your aircon not being cold, emphasising the significance of addressing basic electrical concerns.

How to fix it: 

Step 1: For an air conditioner not blowing air, ensure it’s plugged in and the power cord isn’t damaged or dislodged.

Step 2: If the AC isn’t cooling enough, inspect for a blown fuse or tripped circuit. These are simple checks that can quickly resolve the issue.

Learn how to set the universal AC remote to ensure consistent comfort without constant temperature adjustments to your space. Our technician can give you some pointers during our aircond installation service.

2. Malfunctioning Thermostat (Coil Sensor)

Your air conditioner may cease blowing cool air due to a malfunctioning thermostat. Sometimes, causes the refrigerated air to lose its cooling effect. A bad or damaged thermostat will not transmit a signal to the compressor. Hence, the circulated air is not cooled off and remains warm or hot.

How to fix: 

Step 1: Switch off the aircon power supply for 5 seconds and turn it back on to check if it is cold.

Step 2: If yes, monitor until the aircon becomes hot, and we can conclude that it has a bad/damaged thermostat.

3. Refrigerant Leak

While coolant typically doesn’t degrade, slow leaks can undermine an air conditioner’s cooling performance over time. A refrigerant leak may be the culprit if other factors have been ruled out, such as a dirty filter or a malfunctioning thermostat.

How to fix:

Step 1: Consult a professional to check for slow leaks in your air conditioning system. They can recharge the system if needed. 

Step 2: If you’re experiencing an air conditioner not blowing cold air due to slow leaks, it’s best to leave the diagnosis and repair to an expert technician.

4. Clogged Filter

A clogged filter triggers a shutdown mechanism to prevent overheating and motor damage. Reduced airflow due to a congested filter prevents cold air and increases dust accumulation in the room, highlighting the importance of regular air conditioning service.

How to fix: 

Step 1: Open the air conditioner and check the filter for dirt and clogs. A dirty filter can cause the air conditioner to run without blowing cold air. 

Step 2: Regularly clean the filter to prevent issues with your home AC unit not blowing cold air. Replace it when necessary. Aim to check the filter every month to ensure optimal performance.

5. Dirty Condenser

Outdoor condensers can rapidly accumulate dirt, impeding the air conditioner’s cooling efficiency. The unit struggles to draw in and cool air, akin to the effects of a clogged filter on cold air circulation.

How to fix it: 

Step 1: If the condenser is covered and built up with dust, chemical cleaning is required to remove the stubborn dust from the coil.

Step 2: Regularly trim and weed around the condenser and remove overhanging branches to ensure proper airflow and cooling efficiency.

6. Formation of Ice

Ice buildup occurs when dirty filters or coils hinder proper airflow and refrigerant circulation. This results in an air conditioner running without blowing cold air, particularly in central air systems experiencing cooling issues.

How to fix it: 

Step 1: Check the coils for cleanliness when your air conditioner doesn’t feel cold. Dirty coils can lead to ice buildup and hinder cooling.

Step 2: If an air conditioner is not getting cold, ensure sufficient airflow by melting ice off the coils. Run the unit with only the fan on to facilitate melting.

Step 3: After melting the ice, if the air conditioner still isn’t cooling air, consider checking other components or seeking professional help.

Learn the causes behind aircon leaking water issues and learn effective techniques to resolve them.

7. Compressor Circuit Issues

Ensuring cleanliness and protection around the compressor area is vital to prevent debris buildup, which can impede its operation and lead to inadequate cooling performance. Checking for issues around the compressor circuit is crucial when troubleshooting refrigerated air that fails to cool effectively.

How to fix it: 

If the compressor short circuits, it is very dangerous for the customer to do the repairing on their own (e.g., earth leaking). Hence if the ac trips the Electrical DB, it is best to consult a professional aircon technician to analyse the issue.

After attempting various methods to address the aircon not cold issue without success, consider scheduling professional air cond maintenance to ensure your system is properly inspected and serviced.

Conclusion 

A non-cold aircon can be a frustrating problem, but most of them can be fixed without calling in professional help. Understanding the common causes and implementing the appropriate solutions can restore the cool airflow in your home or office. With proper maintenance and timely repairs, you can enjoy the comfort of a cold and refreshing environment, even on the hottest days.