What are Common Aircon Problems?
Common aircon problems refer to frequent issues faced by homeowners and office users in Singapore, especially during the hotter and more humid months. These include the aircon not cooling properly, leaking water, making loud noises, or not turning on at all. Given how important air-conditioning is in Singapore’s climate, even minor disruptions can be inconvenient and uncomfortable.
Over time, common aircon issues tend to repeat, especially in older units or those that don’t get regular servicing. These problems can often be avoided or fixed quickly with the right knowledge and maintenance habits.
Why do aircon issues happen?
It’s a well-known fact that aircons in Singapore run almost every day due to the hot and humid weather. Constant usage puts stress on the system, and without regular servicing, dust and dirt build up in the filters, coils, and drainage system. This leads to poor cooling, water leaks, and higher electricity bills.
In many cases, people only notice an issue when the aircon stops cooling or starts making strange noises. That’s why preventive maintenance and early attention to warning signs are so important.
Where do these problems start from?
Contrary to popular belief, most aircon issues start small. Clogged filters, dirty coils, or blocked drain lines are the usual suspects. These might seem minor at first, but they can affect cooling efficiency and even damage internal components over time.
For example, a dirty filter restricts airflow, making the aircon work harder. Over time, this can cause the system to overheat or freeze up. A blocked drainage system can lead to water leaks inside your home or office.
Common Aircon Problems and Quick Fixes
1. Aircon Not Cooling Properly
One of the most frequent issues faced by homeowners in Singapore is poor cooling. This is often caused by a dirty air filter, a blocked outdoor condenser unit, or low refrigerant levels. The quick fix? Start by cleaning or replacing the air filter. Ensure that the outdoor unit is not obstructed by leaves or debris. If the cooling still feels weak, it might be time to call a licensed technician to check and top up the gas.
2. Aircon Not Turning On
If your aircon doesn’t turn on, don’t panic. First, check if the remote control batteries are still working. Then, inspect your circuit breaker to ensure it hasn’t tripped. Also, confirm that the wall switch near the indoor or outdoor unit is turned on. These simple steps often resolve the issue without the need for a service call.
3. Aircon Making Strange Noises
Rattling, buzzing, or whistling noises from your aircon can be annoying and may signal internal issues. Loose fan blades, trapped debris, or electrical faults are common culprits. If you hear an unusual sound, turn off the unit and check for any visible obstruction. If the noise continues after cleaning, it’s best to consult a professional to avoid further damage.
4. Water Leaking from Aircon Unit
A leaking aircon usually points to a clogged drainage pipe or a frozen evaporator coil. You can try flushing the drainpipe using warm water or a mild cleaning solution. Also, switch off the unit for a while to let it thaw naturally. Persistent leaks may require a service technician to inspect and clear the drain line properly.
5. Unpleasant Smells from Aircon
If your aircon is emitting a musty or foul odour, it’s likely due to bacteria, mould, or trapped moisture inside the system. Sometimes, the smell could also be electrical—especially if it’s a burnt or plastic-like scent. Clean or replace the air filter and consider an anti-bacterial treatment. For stronger or lingering smells, a deep cleaning by professionals is recommended.
