AC Not Cooling Repair in Bangkok
Why Is My AC Running But Not Cooling?
An air conditioner may stop cooling properly for several reasons. In some cases, the problem is low refrigerant. In others, it may be caused by dirty coils, a clogged filter, fan motor issues, sensor faults, or drainage-related problems affecting system performance.

In many cases, poor cooling is caused by dirt buildup rather than refrigerant loss. That is why we often recommend cleaning the AC first before moving to gas refill or further repair. This helps improve diagnosis and avoids unnecessary work.
We provide AC not cooling repair in Bangkok for condo units, homes, and selected small office systems. If you are not sure what is causing the issue, you can send us a photo or short video via LINE before booking.
Common Causes of Aircon Not Cooling
Low Refrigerant
Low refrigerant can reduce cooling performance and prevent the AC from reaching the set temperature. This is often caused by a leak or previous improper servicing.
Dirty Coils or Filters
Dust buildup on the indoor coil or clogged filters can block airflow and make the AC feel weak even if the system is running normally.
Airflow or Fan Problems
If the fan or blower is not working properly, cool air cannot circulate effectively, resulting in poor cooling performance.
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What We Check When Your AC Is Not Cooling
We inspect the system carefully to identify the real cause of the cooling issue. Our technicians check airflow, internal cleanliness, refrigerant condition, and overall air conditioner performance before recommending the next step.
- Cooling performance
- Airflow condition
- Indoor coil and filter cleanliness
- Refrigerant pressure
- Fan and basic electrical operation
- Signs of leakage or other repair needs
You can explore our full range of AC repair services for different types of issues.
Common Questions About AC Not Cooling
How much is the inspection for AC not cooling?
The inspection fee is 1,000 THB. Our technicians will check the system, identify the cause of the cooling issue, and recommend the appropriate solution before any repair work is done.
Why is my AC running but not cooling?
An AC may run without cooling properly because of low refrigerant, dirty coils, blocked airflow, fan problems, or electrical faults. A proper inspection is needed to identify the exact cause.
Does AC not cooling always mean low gas?
No. Weak cooling is not always caused by low refrigerant. In many cases, the issue is related to dirt buildup, filters, fan performance, or other system faults.
Do you recommend cleaning before AC repair?
Yes, in many cases. Cleaning can improve airflow, remove dirt buildup, and help us determine whether the cooling issue is caused by contamination or a deeper repair problem.