Nothing is worse than turning on your aircon on a hot and humid day, only to find that it is blowing warm air instead of the cool breeze you were expecting. If this happens, do not panic. There are several possible reasons why your aircon is not functioning as it should, and many of them can be fixed with simple troubleshooting.
Here’s what you can do before calling for professional help.
Check the thermostat settings
It may sound obvious, but the first thing to check is whether your thermostat is set to the correct temperature. Ensure that it is set to “cool” mode and that the temperature is lower than the current room temperature. Sometimes, a simple accidental change in settings can cause your aircon to blow warm air.
Inspect the air filter
A clogged or dirty air filter can restrict airflow and cause the aircon to function inefficiently. When the airflow is blocked, the evaporator coil may freeze, leading to warm air being circulated instead of cool air. Regularly cleaning or replacing the air filter can prevent this issue and help maintain your aircon’s performance.
Examine the circuit breaker
If your aircon is blowing warm air, it could be due to a tripped circuit breaker. The indoor unit may still be running, but the outdoor compressor may have lost power, causing the system to stop cooling. Check your electrical panel and reset the breaker if necessary. However, if the breaker keeps tripping, there could be an underlying electrical issue that requires professional attention.
Look for refrigerant leaks
Low refrigerant levels are a common cause of an aircon not cooling properly. If there is a leak, your aircon will struggle to cool the air effectively. Signs of a refrigerant leak include hissing sounds, ice forming on the refrigerant lines, or a noticeable decrease in cooling performance. If you suspect a refrigerant issue, it is best to call for aircon servicing immediately, as handling refrigerants requires professional expertise.
Check the outdoor unit
The outdoor condenser unit plays a crucial role in releasing heat from your home. If the unit is dirty, obstructed, or covered in debris, it can cause your aircon to overheat and function inefficiently. Ensure that there is sufficient airflow around the unit and clear any leaves, dirt, or objects that may be blocking it.
Inspect the aircon ducts
If you are using a central air conditioning system, blocked or leaking ducts could be the reason for the warm air. Ducts that have holes or leaks allow cool air to escape, reducing the system’s overall cooling efficiency. This issue is more common in older systems, and sealing or repairing the ducts may be necessary.
Consider the age of your aircon
If your aircon is more than ten years old, it may simply be reaching the end of its lifespan. Over time, wear and tear can lead to a decline in performance, making it harder for the unit to cool your space effectively. In such cases, replacing the unit with a newer and more energy-efficient model may be the best solution. Consulting an aircon installation company can help you choose a suitable system for your needs.
When to call a professional
If you have checked all the possible causes and your aircon is still blowing warm air, it is time to seek professional help. Persistent issues may indicate a more serious underlying problem that requires expert diagnosis and repair. Regular maintenance can also help prevent such issues and ensure that your aircon operates efficiently throughout the year.
For reliable and affordable aircon solutions, contact us at Affordable Aircon Pte Ltd. Our experienced technicians can quickly diagnose and fix any issues, ensuring that your aircon keeps you cool and comfortable.