Quick Answer: Why your aircon is not cold
If your air conditioner is not cold, the most common causes in Kuala Lumpur are internal dirt buildup, low refrigerant gas, or a faulty compressor. In our local climate, most cooling issues are resolved through a professional chemical wash, gas top-up, or technical repair after a proper diagnosis.
Common Reasons & Professional Solutions
1. Dirty Evaporator Coil or Blower
Dust and slime block cold air circulation inside the indoor unit. This is the most frequent cause of cooling failure in Malaysia’s humid environment.
- Signs: Airflow is present but not cold, musty smell, or water dripping.
Our Solution: Aircon Chemical Wash — We deep-clean the unit to restore cooling performance.
2. Low or Leaking Refrigerant Gas
Insufficient gas levels prevent the system from cooling effectively, even at the lowest temperature settings.
- Signs: Aircon blowing warm air, ice forming on copper pipes or coils.
Our Solution: Aircon Gas Top Up — We refill refrigerant and inspect the system for leaks.
3. Sensor or Electrical Fault
When the compressor or sensors fail, the system cannot maintain the cooling cycle, often cutting off prematurely.
- Signs: Compressor stops running, error lights flashing, or no response to remote settings.
Our Solution: Expert Aircon Repair — Technical diagnosis and component replacement.
How Our Technicians Diagnose the Problem
Our team follows a strict diagnostic sequence to identify the root cause accurately:
- Temperature Drop Test: Measuring the actual cooling output.
- Internal Inspection: Checking the evaporator, blower, and filters for clogs.
- Pressure Audit: Testing refrigerant levels with industrial gauges.
- System Check: Inspecting the compressor and electrical components.
Why Cooling Issues Are Common in Kuala Lumpur
High humidity and constant daily usage lead to rapid mould growth and system wear in Kuala Lumpur and Selangor. Regular maintenance is essential to prevent sudden breakdowns. Our technicians provide same-day service to ensure your cooling is restored immediately.
Need help? View our Aircon Services in Kuala Lumpur
Real Cases in Kuala Lumpur (Proof of Work)
- In condominiums across Mont Kiara and Bangsar, over 70% of “aircon not cold” cases we handle are caused by internal dirt buildup rather than gas leakage.
- In Bangsar high-rise apartments, we often see air conditioners running daily with restricted airflow due to clogged evaporator coils. In these cases, the aircon blows air but fails to cool properly until internal cleaning is completed.
- In landed homes around Cheras and Ampang, “aircon not cold” complaints are frequently linked to slow refrigerant leakage combined with overdue servicing. Proper diagnosis followed by gas top-up and system balancing resolves most issues without compressor replacement.