Why Is My Air Conditioner Not Cooling

It’s a blazing hot day, you turn on your AC, and nothing but warm air. If you’ve asked yourself, “Why is my air conditioner not cooling?”, you’re not alone. This is one of the most common issues homeowners in Pakistan face during summer. The good news? Many of the problems have simple fixes.

In this guide, we’ll break down the most common reasons why your air conditioner isn’t cooling and what you can do to fix them—whether you use a Gree, Dawlance, Haier, TCL, or Kenwood air conditioner.

1. Dirty or Clogged Air Filters

Problem:

Dust and debris block airflow, making it hard for the AC to cool properly.

Fix:

Clean or replace filters every 2–4 weeks, especially during peak summer months.

2. Incorrect Thermostat Settings

Problem:

Your thermostat might be set to “Fan” instead of “Cool” or the temperature may be too high.

Fix:

Set the thermostat to “Cool” mode and lower the temperature to 24–26°C.

3. Low Refrigerant Levels

Problem:

If the refrigerant (cooling gas) is low or leaking, your AC can’t cool effectively.

Fix:

Call a professional technician to inspect and refill gas—especially if you use inverter models like Gree Pular or Haier Marvel.

4. Dirty Condenser Coils (Outdoor Unit)

Problem:

When the outdoor unit is clogged with dirt, it can’t release heat.

Fix:

Turn off the AC and gently wash the outdoor unit with water or have it professionally cleaned.

5. Blocked or Leaky Ducts

Problem:

Cool air might be escaping through broken ducts or being blocked by internal dust buildup.

Fix:

Have your ducts checked and sealed by a certified technician.

6. Tripped Circuit Breaker or Power Issue

Problem:

Sometimes your AC is not cooling simply because it’s not getting proper power.

Fix:

Check the circuit breaker and ensure the indoor and outdoor units are both powered.

7. Faulty Compressor or Capacitor

Problem:

The compressor is the heart of your AC. If it fails, cooling stops entirely.

Fix:

Only an expert should handle this—get your AC checked if you hear strange noises or your AC shuts off randomly.

8. Too Small AC for the Room Size

Problem:

If your room is large but the AC is underpowered (e.g., 1 Ton for a 300 sq. ft room), it won’t cool properly.

Fix:

Use the correct AC size. Example:

• 1.5 Ton for 150–240 sq. ft
• 2.0 Ton for larger halls

Brands like Kenwood eSmart, TCL T-Pro, and Orient Ultron offer higher tonnage models for big rooms.

9. Lack of Regular Maintenance

Problem:

Skipping annual servicing can reduce efficiency, cause leaks, and shorten lifespan.

Fix:

Schedule a seasonal AC service from a certified technician before each summer.

10. Internal Sensor or PCB Board Issue

Problem:

The inverter board or temperature sensor may be malfunctioning, especially in digital models.

Fix:

Have a technician diagnose the control board or sensor circuit—common in TCL, Kenwood, and Haier inverter ACs.

Quick Troubleshooting Checklist:

Final Thoughts

If your air conditioner is not cooling properly, don’t panic. Now that you know the common causes and easy fixes, you can handle most issues yourself—or call for help before it becomes a bigger problem.

Regular maintenance is key to long-term performance, especially during peak summer months in Pakistan.
And if your current AC keeps failing, it might be time to upgrade to a newer, more energy-efficient model.

For professional servicing or to upgrade to a new Gree, Haier, Dawlance, or Kenwood inverter AC, visit GulfElectronics.pk—Pakistan’s trusted home appliances platform.