Top Signs Your Aircon Needs Servicing – Don’t Ignore These

Aircon units don’t stop working out of nowhere. They give warning signs—small issues that grow into expensive problems if ignored. Spotting these early can save you money and keep your home comfortable.

Here are the most common aircon servicing signs that Singapore homeowners should never ignore.

Common signs your aircon needs servicing: from weak cooling and leaks to rising bills and noise

1. Air Not Cold Anymore

If your aircon is running but the room stays warm, that’s a red flag. It could be a clogged filter, low gas, or a faulty compressor.

Action: Start with a filter clean. If that doesn’t help, schedule a servicing check. Delaying this often leads to full breakdowns.

2. Water Leaking from the Unit

Leaking water usually means the drainage system is blocked or the coils are dirty. Over time, this can stain your wall or damage furniture.

Action: Get it checked before mould builds up or the water causes more damage. In HDB flats and condos, this could also affect neighbours below.

3. Aircon Making Unusual Sounds

Humming, rattling, or clicking sounds are not normal. They often point to loose components or motor issues.

Action: Unusual sounds are one of the most overlooked aircon repair symptoms in Singapore. Don’t wait till it stops working completely.

4. Foul Smell When Aircon Turns On

Musty or chemical smells are often caused by mould, bacteria, or gas leaks. This affects air quality and can trigger allergies.

Action: You may need chemical cleaning. If the smell is chemical or sharp, stop using the unit and call a technician.

5. Sudden Spike in Electricity Bill

If your usage is the same but your bill is going up, your aircon is working harder than it should. Dirt buildup and gas issues cause this.

Action: Regular servicing restores efficiency. A clean unit uses less energy and cools faster.

6. Frequent On-Off Cycling

When your aircon keeps switching on and off too quickly, it’s often a thermostat or control board issue.

Action: This puts stress on your system. A quick service check can reset and recalibrate the components.

7. Ice on the Aircon

If you see ice forming on the indoor unit or outdoor piping, your system might have low gas or airflow problems.

Action: Turn off the unit and get it checked. Continuing to run it could damage the compressor.

FAQ

Q1: How do I know when to call for servicing?

If your aircon shows any of the signs above, book a basic service immediately.

Q2: How often should I service my aircon in Singapore?

Every 3 to 4 months if used daily. Every 6 months for light use.

Q3: Is it bad to delay servicing?

Yes. Small problems often turn into big repairs that cost more.

Q4: What’s included in a basic service?

Filter cleaning, coil inspection, drainage vacuuming, and performance check.

Q5: Should I wait for the unit to stop working?

No. Regular servicing prevents breakdowns and extends lifespan.

Noticed these signs? Contact Sky Blue Aircon Engineering for a fast, no-nonsense check-up before the problem gets worse.