Why Your Aircond Is Not Cold (Tak Sejuk) in Semenyih – Causes & Fix

If your aircond is running but the room still feels warm, you’re not alone. Many homeowners in Semenyih face this issue, especially during hotter months.

When an aircond is not cold (tak sejuk), the problem is not always “no gas”. There are several possible causes, and understanding them helps avoid unnecessary repairs.

1️⃣ Dirty Indoor Coil or Air Filter

Dust buildup is one of the most common reasons for weak cooling.

In Semenyih, many homes especially landed properties collect dust quickly. When filters and coils are dirty:

• Airflow becomes restricted
• Cooling efficiency drops
• The compressor works harder

Regular servicing every 3–4 months prevents this issue.

2️⃣ Low Refrigerant (Gas Leak)

If cooling gradually becomes weaker, the unit may have low refrigerant.

Signs include:

• Air blowing but not cold
• Ice forming on the copper pipes
• Longer time to cool the room

Gas does not “finish” on its own. If levels are low, there is usually a small leak that needs checking before topping up.

3️⃣ Outdoor Unit Not Releasing Heat Properly

The outdoor condenser plays a major role in cooling performance.

If it is:

• Blocked by dirt
• Installed too close to a wall
• Exposed to excessive heat
• Experiencing fan issues

Cooling indoors will be affected.

4️⃣ Faulty Compressor or Electrical Issue

If the unit turns on but does not cool at all, the issue may be:

• Compressor malfunction
• Capacitor failure
• PCB board problem

These require proper inspection and cannot be fixed by cleaning alone.

5️⃣ Incorrect Horsepower for Room Size

In larger living areas or new double storey homes in Semenyih, a unit with insufficient horsepower may struggle to cool effectively.

The aircond keeps running but never reaches the desired temperature.

When Should You Call for Service or Repair?

You should contact a technician if:

• The unit is not cold even after cleaning filters
• Cooling weakens over time
• Water leakage occurs
• Electricity bill increases unexpectedly
• The unit is more than 8 years old

Early inspection prevents bigger and more expensive problems later.

Final Advice for Semenyih Homeowners

Because of Malaysia’s heat and humidity, aircond systems work harder than in cooler countries. Routine servicing helps maintain performance and extend lifespan.

If your aircond is not cold in Semenyih, proper diagnosis is more important than guessing the solution.