If you see wet spots, peeling paint, or damp patches near your aircon, you may have aircon condensation on walls and ceilings. This is very common in Singapore because of our hot, humid climate. However, you can prevent it once you know why it happens and what to do. In this guide, we will explain the causes and solutions step by step.
Why Does Aircon Condensation Happen?
Condensation forms when warm, humid air touches a cold surface. As a result, water droplets appear on walls or ceilings near your aircon. Moreover, high humidity in Singapore speeds up this process, especially during the rainy season.
The main causes include:
Poor airflow around the aircon unit – cold air gets trapped, and moisture forms on walls.
Damaged or worn pipe insulation – exposed pipes touch warm air, causing condensation.
High humidity – Singapore’s tropical climate increases indoor moisture.
Low refrigerant levels – frozen evaporator coils melt, creating excess water.
Blocked drain pipe – water cannot flow out and leaks into walls or ceilings.
Therefore, understanding the cause helps you apply the right solution.
1. Improve Airflow Around Your Aircon
Poor airflow makes condensation worse.
What to do:
Move furniture away from the aircon.
Keep vents open and remove curtains or shelves blocking airflow.
As a result, cold air circulates properly, and moisture is less likely to form. In addition, this improves cooling efficiency.
2. Replace Old or Wet Pipe Insulation
Damaged insulation exposes cold pipes to warm air, creating water droplets.
Check for:
Cracks or wet insulation
Exposed copper pipes
If you notice any of these, replace the insulation. This prevents warm air from touching cold surfaces, reducing condensation.
3. Reduce Indoor Humidity
High humidity makes condensation worse. Therefore, lowering moisture levels inside your room is important.
Try these tips:
Turn on Dry Mode on your aircon
Keep windows closed on humid days
Avoid drying clothes indoors
Use a small dehumidifier if needed
By doing this, your room stays drier, and condensation is minimized.
4. Clear the Drain Pipe
A blocked drain pipe causes water to overflow.
Signs include:
Dripping water
Musty smell
Damp patches near the unit
Hence, cleaning the drain pipe during regular servicing prevents leaks and water damage.
5. Check Refrigerant Levels
Low refrigerant freezes the evaporator coil. Subsequently, when the ice melts, water may leak onto walls or ceilings.
Signs of low gas include:
Weak cooling
Ice on pipes
Dripping water
Therefore, a licensed technician should check and refill the gas to prevent condensation.
6. Schedule Regular Aircon Servicing
Even with proper care, regular maintenance is essential. After all, technicians can detect insulation damage, clogged drains, and low refrigerant before they cause problems.
Especially in Singapore, HDB and condominium aircon systems benefit from routine checks.
Need Professional Help Fixing Aircon Condensation?
At Lion City Air Conditioner Services, we provide fast and reliable aircon servicing, insulation replacement, and leak repair in Singapore. Whether it’s a wet wall, dripping ceiling, or weak cooling, our technicians can solve it quickly.
📞 Call +65 8818 5781
🛠️ Book your service online at lioncityaircon.sg
With our help, your walls stay dry, and your aircon runs efficiently—rain or shine.
