In Singapore's heat and humidity, a working aircon is a must-have. But what if it stops blowing cold air?
This common issue affects many households, from HDB flats to condos and offices. There are several reasons your aircon might not cool properly. Some are simple fixes, like regular servicing, while others need professional repair.
In this guide, we’ll explore the top reasons your aircon isn’t cold and share the best local solutions to restore your cooling.
Singapore’s hot and humid climate puts immense pressure on air conditioners. Unlike cooler countries where aircons are used sparingly, in Singapore, they often run for 8–16 hours daily. This constant use, coupled with the country’s dusty, moist, and urban environment, accelerates wear and tear.
Cooling problems are among the most common issues reported to aircon repair services in Singapore. If left unresolved, these problems can lead to:
-
Higher electricity bills
-
Decreased indoor air quality
-
Water leaks and mold growth
-
Complete system failure
Understanding the underlying causes of cooling issues is the first step toward resolving them effectively.
1. Dirty Air Filters
The most common culprit is dirty or clogged air filters. Over time, dust and dirt build up in the filters, blocking airflow. This makes the unit struggle to cool and may also blow warm or weak air.
Solution:
-
Wash your filters once every 2–4 weeks at home.
-
Book professional servicing every 3 months to ensure deeper cleaning.
-
iAircon’s PowerJet Wash is especially effective, using high-pressure water jets and chemicals to remove stubborn dirt.
2. Low Refrigerant (Gas) Levels
Air conditioners need refrigerant gas to absorb heat and release cool air. If the gas level is low, the aircon won’t cool effectively. This is often caused by leaks in the system.
Signs of Low Gas:
-
Aircon blowing air but not cold
-
Ice forming on the pipes
-
Hissing sounds from the unit
Solution:
-
A professional gas check with digital gauges is required.
-
iAircon provides honest gas top-up services — if gas levels are fine, they won’t charge.
-
They also offer leak detection and repairs to prevent repeated issues.
3. Dirty Condenser Coils
The condenser coils in your aircon are responsible for expelling heat. When they get dirty or clogged with dust, heat transfer becomes inefficient, leading to weak cooling performance.
Solution:
-
General servicing might not be enough to resolve this issue.
-
Opt for a chemical wash or a PowerJet Chemical Overhaul to restore full cooling efficiency.
4. Faulty Compressor
The compressor is the “heart” of your aircon system. If it malfunctions, the aircon won’t cool at all. This is more common in older units or systems that haven’t been maintained properly over time.
Solution:
-
Contact a professional for aircon repair Singapore immediately.
-
Depending on the severity, the compressor may require either repair or replacement.
-
Regular servicing can help prevent premature compressor failure and extend its lifespan.
5. Thermostat Problems
At times, the issue isn’t with the cooling system itself but with the thermostat. A faulty or miscalibrated thermostat sensor can fail to detect the room temperature correctly, preventing the unit from cooling effectively.
Solution:
-
Try resetting or recalibrating the thermostat.
-
If the thermostat is damaged, have it replaced during your next servicing session.
6. Blocked Drainage or Water Leaks
Clogged drainage pipes can lead to water buildup, which impacts cooling efficiency. You might also notice water leaking or dripping from your aircon unit, a clear sign of drainage issues.
Solution:
-
Drainage checks are part of general servicing.
-
For tougher clogs, a chemical flush may be required.
-
iAircon’s PowerJet method effectively clears stubborn blockages and ensures proper drainage.
7. Lack of Regular Servicing
Neglecting routine servicing is the fastest way to turn your aircon into an inefficient system. Dust buildup, gas leaks, and mechanical issues will only worsen without regular maintenance, leading to poor cooling and costly repairs.
Solution:
-
Stick to a 3-month servicing cycle for household aircon units.
-
For offices or high-usage environments, monthly servicing is recommended.
-
Use iAircon’s Easy Booking system to schedule your servicing and receive reminders via email or SMS.
Consistent care and maintenance are key to keeping your aircon running efficiently and ensuring a comfortable, cool environment year-round!
How iAircon Solves Your Aircon Cooling Issues
iAircon redefines aircon servicing by combining advanced technology with unmatched transparency and efficiency.
Its innovative PowerJet Technology delivers a deeper, more thorough clean compared to traditional methods, while Digital Gas Checks guarantee precise refrigerant top-ups, giving you peace of mind.
The process is seamless, thanks to an intuitive online booking system, secure Stripe payments, instant confirmations, and timely reminders. To top it off, iAircon offers a 90-day warranty on chemical washes and overhauls, ensuring dependable service you can trust.
Aircon Servicing Costs in Singapore
The cost of aircon servicing in Singapore varies based on the type of maintenance required.
General servicing typically costs between $40 and $60 per unit, while a Chemical Wash (PowerJet) ranges from $80 to $120 per unit. For more thorough maintenance, a Chemical Overhaul is priced at $120 to $180 per unit.
Gas top-up charges depend on the type of refrigerant used, usually falling within $60 to $150.
Investing in regular servicing is a wise choice—it not only reduces energy bills but also prevents costly breakdowns. Routine maintenance ensures your air conditioning system operates efficiently and extends its lifespan.
FAQs
Why is my aircon not cold even though the AC unit is running?
If your air conditioning unit is not producing cold air, it may be due to blocked air filters, dirty evaporator coils, or refrigerant lines leaking. These aircon not cold problems reduce cooling efficiency, preventing the cooling cycle from working properly. Without optimal cooling performance, the indoor unit and outdoor unit cannot complete heat exchange or release heat effectively.
Can a faulty thermostat cause inconsistent cooling?
Yes. A faulty thermostat or weak thermostat batteries may stop the cooling process too soon, leading to less cool air. Inconsistent cooling also occurs if the thermostat fails to detect the desired temperature. This makes it harder to keep a room cold during Singapore's sweltering heat.
How do clogged parts affect cooling performance?
Blocked condenser coils, a clogged drain line, or dirty evaporator coils restrict proper airflow. These issues cause unusual noises, reduce cooling efficiency, and may even stop cooling entirely, leaving warm air inside the space.
What solutions help restore efficient cooling?
Professional servicing includes replacing air filters, checking electrical connections, cleaning the split AC indoor unit, outdoor unit, and condenser unit. This ensures proper airflow, keeps cold evaporator coils working, and allows the AC system to keep the room cooler while lowering high energy bills.
Conclusion
If your aircon is not cold, don’t panic — it’s a common issue in Singapore. From dirty filters to low gas, drainage problems, or compressor faults, there are many possible reasons. The key is timely servicing and choosing the right service provider.
With iAircon’s PowerJet Wash, Chemical Overhaul, digital gas checks, Easy Booking, and AI assistant Luna, you get a complete solution for every cooling problem.
Don’t wait until your aircon stops working completely. Book your aircon servicing in Singapore today with iAircon.Repair and restore cooling comfort to your home or office.