Singapore is hot and humid all year. Because of this, your aircon works harder than units in many other countries. However, high humidity doesn’t only affect comfort. It also creates hidden aircon problems that many homeowners don’t notice until the system starts leaking, smelling, or cooling poorly.
In this guide, you’ll learn why Singapore’s humidity damages your aircon, the real reasons these issues appear, and the best ways to solve them quickly. These solutions also help you find trusted services like aircon servicing Singapore, aircon cleaning Singapore, and aircon chemical wash Singapore.
1. How Singapore’s Humidity Affects Your Aircon
Singapore’s humidity often ranges between 75% to 95%. As a result, your aircon collects water faster, forms mould quicker, and traps dust more easily. Consequently, it becomes a perfect breeding ground for bacteria and unpleasant smells.
Common humidity-related problems
Mould on the blower and evaporator coil
Dirty or musty aircon smell when switching on
Weak cooling performance due to restricted airflow
Water leaking from clogged drainage
Higher electricity usage from overworked parts
In other words, the humidity never gives your aircon a break. Even at night, moisture continues building up inside the unit.
2. Hidden Problems Caused by High Humidity in Singapore
a. Mould and Bacteria Growth
High moisture levels allow mould to grow on the coil and blower wheel. Eventually, this leads to a musty or dirty aircon smell, which is one of the most common complaints in Singapore.
b. Blocked Drain Pipes
Humidity produces more condensation. Over time, dust mixes with water and forms thick sludge that blocks the drainage pipe. Therefore, the aircon may start leaking water indoors.
c. Poor Cooling After a Few Minutes
Moisture traps heat inside the coil, limiting cooling. As a result, the aircon may start off cold but blow warm air shortly after. This is why many homeowners search for aircon repair Singapore.
d. Higher Electricity Bills
Dirty coils and excess moisture reduce efficiency. Consequently, the system takes longer to cool your room and uses more power.
3. Best Solutions for Humidity-Related Aircon Problems
a. Do a Deep Cleaning or Aircon Chemical Wash
If your unit smells, leaks, or cools poorly, a professional aircon chemical wash Singapore is the most effective fix. It removes mould and bacteria from every component. In addition, it restores air pressure and cooling performance.
b. Schedule Regular Aircon Servicing (Every 3 Months)
Since humidity is constant in Singapore, regular aircon servicing prevents mould and dust buildup. Moreover, it helps your aircon cool faster and smell fresher.
c. Keep Doors and Windows Closed
When warm, humid air enters your room, it causes more condensation in your unit. To prevent this, keep doors and windows closed while the aircon is operating.
d. Use a Dehumidifier for Extremely Humid Rooms
If you live in areas like Punggol, Woodlands, Pasir Ris, or Yishun, humidity levels can be even higher. In such cases, using a dehumidifier can significantly reduce mould growth inside your aircon.
e. Clean the Filters Every Two Weeks
Filters trap dust quickly in Singapore’s climate. Therefore, cleaning them regularly helps maintain good airflow and prevents moisture buildup.
4. When to Call a Professional Aircon Technician in Singapore
You should call a trained technician if you notice:
Musty or dirty smell
Weak cooling
Water leaks
Loud noises
Warm air after a few minutes
Ultimately, these signs show that moisture has already affected internal components. Because of this, a professional aircon technician Singapore is needed to prevent further damage.
Singapore’s humidity will always affect your aircon. However, with consistent maintenance, you can prevent major problems. By scheduling regular cleaning, keeping the room sealed, and using deep cleaning services like aircon chemical wash, your unit will stay clean, efficient, and odour-free.
If your aircon shows any early signs of trouble, now is the best time to fix it — before humidity makes the issue worse.
Book Your Aircon Servicing With Lion City Aircon
Singapore’s humidity is tough on aircon systems, but we can help you keep yours clean, efficient, and long-lasting.
📞 Book your service now: +65 8818 5781
🌐 Visit us: lioncityaircon.sg
✔ Professional aircon servicing and repair
✔ Chemical wash, leak repair, and mould removal
✔ Trusted by HDB and condo owners islandwide
Stay cool and enjoy fresher, healthier air—rain or shine.
