Common Aircon Problems and Their Solutions

Introduction

Living in Singapore means your air conditioner is not just a luxury—it’s a necessity. But even the most reliable unit can run into problems. At Cool & Clean, we help homeowners understand, prevent, and fix common aircon issues before they escalate into costly repairs. Here’s a practical guide to the most frequent aircon problems and what you can do about them.

1. Aircon Not Cooling Properly

What’s the Problem?

If your aircon is running but the room stays warm, there may be a few causes:

• Dirty filters

• Low refrigerant levels

• Faulty compressor

• Thermostat issues

What’s the Solution?

• Clean or replace air filters

• Check refrigerant levels and refill if necessary

• Inspect the thermostat for accuracy

• Schedule a professional diagnostic if the issue persists

2. Water Leaking from the Unit

What’s the Problem?

Water leaks are usually due to:

• A clogged or broken drainage pipe

• Frozen evaporator coils

• Improper installation

What’s the Solution?

• Clear the drainage pipe

• Switch off the unit and allow the coils to thaw

• Have a technician check for installation faults

Tip: Regular maintenance prevents most leaks before they start.

3. Aircon is Noisy During Operation

What’s the Problem?

Strange sounds like rattling, buzzing, or clicking can indicate:

• Loose parts

• A worn-out fan motor

• Debris stuck in the unit

What’s the Solution?

• Tighten screws and internal components

• Clean the fan blades

• Book a professional aircon inspection if the noise continues

4. Foul Smells Coming from the Aircon

What’s the Problem?

If your aircon smells musty or sour, it may be caused by:

• Mould or mildew in the unit

• A dirty filter

• Accumulated dust and bacteria

What’s the Solution?

• Replace or clean the filter

• Schedule a deep chemical wash

• Improve airflow and ensure regular use

5. Aircon Keeps Turning On and Off

What’s the Problem?

This is called short cycling, and it can damage your unit. Causes include:

• Oversized aircon unit

• Thermostat issues

• Dirty condenser or evaporator coils

What’s the Solution?

• Have a technician assess if the aircon is sized correctly

• Check and replace the thermostat batteries

• Clean the coils or book a professional cleaning

How Cool & Clean Singapore Can Help

Your Local Aircon Experts

At Cool & Clean, we provide:

Fast, on-site diagnostics
Aircon chemical washes and servicing
Full system overhauls and part replacements
Friendly advice and honest pricing

Our licensed technicians ensure your home stays cool and your system runs efficiently all year round.

Conclusion

Most aircon issues are preventable or manageable with regular servicing and quick response. Whether it’s poor cooling, leaks, or odd noises, addressing the problem early will save you time, money, and discomfort.

Need help with your aircon?

Contact Cool & Clean Singapore for expert diagnosis, affordable repair, and trusted maintenance.