If you notice ice forming on your aircon pipes, you may feel confused or worried. However, frozen pipes are actually a common issue in Singapore because of our humid weather. Even so, freezing is a clear sign that your aircon is not working properly. It can lead to aircon leaking water, weak airflow, and even expensive aircon repair Singapore problems later on.
Fortunately, most freezing issues are easy to fix once you understand the cause.
1. Dirty Air Filters
When your air filters are clogged with dust, your aircon cannot pull in enough air. As a result, the evaporator coil becomes too cold and turns icy. This is one of the most common causes of aircon freezing Singapore.
How to Fix It
Clean your filters every 2–4 weeks
Replace old or damaged filters
Schedule regular aircon servicing Singapore
2. Low Refrigerant (Gas) Level
If your aircon is low on refrigerant, the pressure inside the coil drops. Because of this, moisture quickly freezes on the pipes. Over time, this can lead to poor cooling and system damage.
How to Fix It
Get a proper aircon gas top-up Singapore
Fix any refrigerant leak before topping up
3. Dirty or Blocked Evaporator Coils
When dust builds up on your evaporator coil, airflow becomes uneven. Therefore, the coil gets too cold and freezes. This often happens when homeowners skip regular aircon maintenance Singapore.
How to Fix It
Do a chemical wash aircon Singapore for a deep clean
Avoid DIY coil cleaning to prevent damage
4. Faulty or Weak Fan Motor
If your fan motor weakens, the airflow inside your aircon becomes slow. Eventually, cold air gets trapped inside, causing the pipes to freeze.
How to Fix It
Have a technician test the fan motor
Replace it if it is no longer working well
5. Thermostat Problems
A faulty thermostat may cause your aircon to overcool the room. When this happens, the system continues running even when the room is already cold, causing freezing inside the unit.
How to Fix It
Replace your thermostat
Set your temperature to a stable 24–25°C, especially in Singapore’s climate
6. Aircon Running for Too Long
Many people run their aircon all night. However, running your unit for long hours without a break increases humidity inside the system. Soon, this moisture freezes and creates ice on the pipes.
How to Fix It
Use the timer mode
Give your aircon short breaks between long usage periods
Common Signs Your Aircon Is Freezing
Pay attention to these signs:
Ice on the copper pipes
Weak or no cool air
Water leaks after the ice melts
Hissing or bubbling sounds
Aircon shutting off suddenly
If you notice any of these, you likely need aircon troubleshooting Singapore.
How to Prevent Frozen Aircon Pipes
You can prevent freezing with a few simple habits.
First, clean your air filters regularly.
Next, keep windows and doors closed during cooling.
Also, book aircon servicing Singapore every 3–4 months.
In addition, avoid using very low temperature settings.
Finally, fix small problems early before they become serious.
By doing these steps, you reduce the chance of freezing, especially in Singapore’s humid environment.
Frozen aircon pipes are a strong sign that something is not working correctly. Thankfully, most causes — like dirty filters, low gas, or blocked coils — are simple to fix. With regular servicing, you can avoid freezing problems and keep your aircon running smoothly all year.
How to Prevent Frozen Aircon Pipes
At Lion City Air Conditioner Services, we specialise in solving aircon freezing issues, aircon leaking water problem, aircon chemical wash, aircon servicing Singapore, aircon repair Singapore, and aircon installation Singapore.
Moreover, our experienced team ensures your aircon stays cool, clean, and efficient — even in Singapore’s heavy humidity.
📞 Call +65 8818 5781
🌐 Book your service at lioncityaircon.sg
Let us fix your frozen aircon pipes quickly and professionally.
