Top 10 Warning Signs Your Aircon Needs Professional Servicing

Intro

In Singapore’s hot and humid climate, a faulty aircon can be a nightmare. Ignoring early warning signs can lead to higher electricity bills, poor air quality, or even a complete breakdown.

At Cool & Clean SG, we’ve serviced thousands of aircon units across Singapore. Here are the top 10 signs your AC needs immediate attention:

1. Weak or No Airflow

If your aircon is running but barely blowing air, it could mean:

• Clogged air filters (reduces efficiency)

• Blocked ducts (common in dusty environments)

• Failing blower motor (needs professional repair)

Solution: Book a professional aircon cleaning with Cool & Clean SG to restore airflow.

2. Warm Air Instead of Cold Air 

Is your AC blowing hot or lukewarm air? Possible causes:

• Low refrigerant (gas leak) – Common in older units

• Faulty compressor – Needs expert inspection

• Dirty condenser coils – Reduces cooling power

Urgent! Refrigerant leaks are harmful and illegal to handle without a licensed technician.

3. Strange Noises (Banging, Squealing, Grinding) 

Unusual sounds from your aircon?

• Squealing → Worn-out fan belt

• Grinding → Motor bearing failure

• Banging → Loose parts inside the unit

Action: Switch off the unit and call Cool & Clean SG for emergency repairs.

4. Musty or Burning Smells 

• Mouldy odour → Bacteria growth in damp filters

• Burning smell → Electrical wiring issue (FIRE RISK!)

Danger! A burning smell requires immediate shutdown and professional help.

5. Water Leaks or Dripping 

Puddles around your indoor unit? Likely causes:

• Clogged drain pipe (algae buildup)

• Frozen evaporator coils (due to poor airflow)

• Cracked drain pan

Ignoring leaks leads to:

✔ Water damage
✔ Mould growth
✔ Higher repair costs

6. Short Cycling (Frequent On/Off) 

If your aircon turns on and off too often, it could mean:

• Thermostat issues

• Overworked compressor

• Refrigerant leak

Why it’s bad: Wastes energy and wears out parts faster.

7. Skyrocketing Electricity Bills 

A sudden spike in power bills often means:

• Your aircon is overworking due to dirt buildup

• Old, inefficient unit (10+ years)

Fix: Regular servicing can cut energy costs by up to 30%.

8. Uneven Cooling (Hot & Cold Spots) 

If some rooms are freezing while others are warm, check:

• Duct leaks

• Thermostat calibration

• Blocked vents

Solution: Our aircon chemical overhaul ensures even cooling.

9. Error Codes or System Malfunctions 

Modern aircons display error codes like:

• E6 → Communication error

• P1 → High pressure fault

• H3 → Motor issue

Don’t ignore these! Call us for diagnostics and repairs.

10. Your Aircon is Over 8 Years Old 

Older units:
✔ Lose cooling efficiency
✔ Use phased-out refrigerants (R22)
✔ Break down more often

Upgrade tip: Consider a new energy-efficient system with our affordable installation plans.

Why Choose Cool & Clean SG for Aircon Servicing?

• Licensed & Experienced Technicians
• Same-Day Emergency Repairs
• Transparent Pricing (No Hidden Fees)
• Chemical Wash, Gas Top-Up & More