Why Is My Aircon Not Cold Even After Servicing
Author : aircool aircool | Published On : 18 Jun 2026
Aircon Not Cold
When your air conditioner has just been serviced, you expect it to deliver cool, refreshing air immediately. However, many homeowners and office users are frustrated when they discover that their aircon is still not cooling properly even after a recent service. If you're facing this issue, don't worry—there are several possible reasons behind it.
At AIRCOOL AIRCON, we often receive inquiries from customers asking, "Why is my aircon not cold even after servicing?" Understanding the root cause can help you take the right action and restore your cooling comfort quickly.
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Incomplete or Basic Aircon Servicing
Not all aircon servicing packages are the same. A standard servicing typically includes cleaning the air filters, checking the system, and washing the external components. While this helps maintain your air conditioner, it may not be sufficient if deeper issues exist within the unit.
If your air conditioner has accumulated dirt inside the evaporator coil, blower wheel, or drainage system, a basic service may not fully resolve the cooling problem. In such cases, a chemical wash or chemical overhaul may be required to thoroughly clean internal components and restore cooling efficiency. Aircon servicing price
Low Refrigerant (Gas) Levels
One of the most common reasons an air conditioner fails to cool effectively is low refrigerant levels. Refrigerant is the substance responsible for absorbing heat and producing cold air. If there is a leak in the system, the refrigerant level drops, reducing cooling performance.
Even after servicing, your aircon may continue blowing warm or mildly cool air if the technician did not identify or repair the refrigerant leak. Signs of low refrigerant include: Daikin yellow light blinking
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Weak cooling performance
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Ice formation on coils
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Longer cooling times
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Increased electricity consumption
A professional technician should inspect the system, locate any leaks, repair them, and recharge the refrigerant if necessary.
Dirty or Blocked Air Filters
Although air filters are usually cleaned during servicing, heavily clogged filters may still restrict airflow if they are damaged or overdue for replacement. Poor airflow prevents cool air from circulating effectively throughout the room. Aircon contractor Singapore
Regular cleaning and timely replacement of filters help improve cooling efficiency, indoor air quality, and overall system performance.
Faulty Thermostat Settings
Sometimes the problem is not with the air conditioner itself but with the thermostat settings. Incorrect temperature settings, faulty sensors, or calibration issues can cause the aircon to operate inefficiently.
Check the following:
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Is the thermostat set to cooling mode? Aircon staem cleaning singapore
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Is the desired temperature lower than the room temperature?
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Are the batteries functioning properly?
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Is the thermostat sensor working accurately?
A malfunctioning thermostat may require repair or replacement to restore proper cooling.
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Dirty Condenser Unit
The outdoor condenser unit plays a crucial role in releasing heat from your home or office. If the condenser coil is covered with dirt, leaves, dust, or debris, heat cannot escape efficiently.
As a result, your air conditioner struggles to cool the indoor space even after servicing. Regular cleaning of the outdoor unit helps improve energy efficiency and cooling performance.
At AIRCOOL AIRCON, our technicians thoroughly inspect both indoor and outdoor units during maintenance visits to ensure optimal operation. aircon repair
Electrical or Mechanical Component Failure
Air conditioners contain several important components, including capacitors, compressors, fan motors, sensors, and circuit boards. If any of these components are malfunctioning, cooling performance may suffer.
For example:
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A weak capacitor may prevent the compressor from operating properly.
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A damaged fan motor can reduce airflow. aircon gas topup
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A failing compressor may struggle to circulate refrigerant.
In these situations, servicing alone cannot solve the issue. Professional diagnostics are required to identify and replace faulty parts.
Frozen Evaporator Coils
Frozen evaporator coils can significantly reduce cooling performance. This issue may occur due to:
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Restricted airflow
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Low refrigerant levels. aircon compressor servicing
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Dirty coils
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Fan problems
When the evaporator coil freezes, it cannot absorb heat efficiently, causing warm air to circulate. If you notice ice buildup inside your unit, turn off the system and contact an experienced aircon technician for inspection.
Aircon Size Is Not Suitable for the Room
Even a perfectly serviced air conditioner may struggle to cool a room if it is undersized for the space. Larger rooms require higher cooling capacity to maintain comfortable temperatures.
Factors affecting cooling requirements include:
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Room size
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Number of occupants. aircon general servicing
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Sunlight exposure
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Electronic equipment generates heat
An improperly sized air conditioning system may run continuously without achieving the desired temperature.
Air Leakage in the Room
Cool air can escape through gaps around doors, windows, and poorly insulated areas. This forces the air conditioner to work harder and may create the impression that it is not cooling properly. Aircon chemical overhaul
Sealing air leaks and improving insulation can significantly improve cooling performance and reduce energy costs.
Why Choose AIRCOOL AIRCON?
At AIRCOOL AIRCON, we provide professional air conditioning servicing, maintenance, repairs, chemical cleaning, gas top-ups, and system diagnostics. Our experienced technicians carefully identify the underlying cause of cooling problems rather than simply performing routine servicing. Aircon chemical wash
Whether your aircon requires refrigerant leak detection, component replacement, deep cleaning, or performance optimisation, our team is committed to delivering reliable and cost-effective solutions.
Conclusion
If your air conditioner is not cold even after servicing, the issue may be caused by low refrigerant levels, dirty coils, faulty components, thermostat problems, airflow restrictions, or an improperly sized system. A standard service may improve performance, but some problems require deeper inspection and specialised repairs.
Instead of continuing to suffer in uncomfortable temperatures, contact AIRCOOL AIRCON for a comprehensive diagnosis and professional air conditioning solutions. Our experts will ensure your aircon operates efficiently, keeping your home or workplace cool and comfortable throughout the year.
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Contact Information
Call: +65 90050975 (or) WhatsApp us: https://wa.me/6590050975
11 Mandai Estate, #03-09 Eldix
Singapore 729908
Mail ID: [email protected]
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