Aircon Not Blowing Cold Air After Servicing? Reasons Why

Author: Brindha SEO

Aircon Not Cold

An air conditioner is one of the most important appliances in Singapore homes and offices, providing comfort in the hot and humid climate. However, many homeowners face a puzzling situation—after servicing, their aircon still does not blow cold air. This can be both frustrating and concerning, especially if you’ve invested time and money in maintenance. At Letscool Aircon and Services in Singapore, we often receive calls from customers asking why their aircon still feels warm even after a professional service.

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Panasonic Aircon servicing

If you are experiencing this issue, don’t panic. There are several possible reasons, and understanding them will help you decide on the right solution. Let’s explore the most common causes.

Common Aircon Problems and Solutions:

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1. Incomplete or Improper Servicing

Not all servicing is equal. If the aircon was not thoroughly cleaned or inspected, dirt and dust may still be clogging the filters, coils, or vents. In some cases, technicians may only carry out basic cleaning without checking deeper issues such as refrigerant levels or blocked drainage. This results in the aircon continuing to blow warm air despite being "serviced."

At Letscool Aircon and Services, our technicians follow a detailed checklist during every servicing session, ensuring that all components are properly cleaned, tested, and restored to optimal performance.

2. Refrigerant Gas Levels Are Low

One of the most common reasons your aircon may not blow cold air after servicing is low refrigerant gas. The refrigerant is responsible for cooling the air, and if the level is insufficient due to leaks or natural depletion over time, the unit will fail to deliver cold air.

During regular servicing, gas top-ups may not always be included unless specifically requested. If your aircon still feels warm, it might be a sign that your refrigerant needs to be checked and refilled by a professional.

Aircon General Service

Aircon Gas Top-up

3. Hidden Gas Leaks

Even if gas top-up is done, your aircon will not stay cold for long if there is a hidden leak in the system. Gas leaks can occur in the piping, coil, or joints, and they are not always visible during basic maintenance. This is why some homeowners notice their aircon cooling for a short period after servicing, only for the problem to return soon after.

Letscool Aircon and Services in Singapore offers leak detection services to identify and fix the source of the issue, ensuring long-lasting cooling performance.

4. Electrical or Thermostat Issues

Sometimes the problem is not with cleaning or gas levels, but with the electrical components or thermostat. If the thermostat is faulty, miscalibrated, or not sensing the room temperature correctly, the aircon may not activate cooling mode properly. Similarly, damaged wiring, capacitors, or sensors can interfere with the cooling cycle.

Professional technicians can run diagnostic checks to ensure all electrical parts are functioning as they should.

Aircon Chemical Wash

Aircon Chemical Overhaul

5. Blocked or Dirty Condenser Unit

The outdoor condenser unit is responsible for releasing heat absorbed from inside your home. If it is clogged with dirt, leaves, or debris, it will not function efficiently, even if the indoor unit has been cleaned. Sometimes, regular servicing may focus only on the indoor unit, leaving the condenser unchecked. This results in reduced cooling performance.

At Letscool Aircon and Services, we always recommend a full system inspection that includes both indoor and outdoor units to ensure balanced performance.

Aircon Steam Cleaning

6. Faulty Compressor

The compressor is the "heart" of your air conditioner. If it is weak or damaged, the unit cannot circulate refrigerant effectively, which means no cooling will take place. Unfortunately, a faulty compressor is a more serious issue and may require repair or replacement.

If you notice your aircon still blowing warm air after multiple servicing attempts, it’s wise to have an expert check whether the compressor is working properly.

Aircon Repair

Aircon spare parts

7. Airflow Obstructions in the Room

Sometimes, the issue may not lie within the aircon system itself. Blocked vents, poor air circulation, or improper placement of the unit can all affect cooling. If furniture, curtains, or other objects obstruct the airflow, it may feel like your aircon is not cooling properly.

Letscool Aircon and Services also advises customers on proper unit placement and room setup to maximize cooling efficiency.

  • Annual Service Contract

8. Servicing Was Due Too Late

Preventive maintenance is crucial. If your aircon was left unserviced for too long, issues such as heavy dirt buildup, clogged drainage pipes, or significant gas leaks may have already damaged certain components. In such cases, a single round of servicing may not be enough to restore cooling, and more extensive repairs could be required.

This is why signing up for regular maintenance contracts with a trusted provider like Letscool Aircon and Services in Singapore helps keep your system in top condition year-round.

Aircon Installation

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Panasonic aircon promotion

How Letscool Aircon and Services Can Help

At Letscool Aircon and Services, we understand how frustrating it can be when your aircon is not blowing cold air after servicing. That’s why we provide:

  • Thorough servicing – covering both indoor and outdoor units.

  • Gas top-up and leak detection – ensuring proper refrigerant levels.

  • Diagnostic checks – for electrical, thermostat, and compressor health.

  • Preventive maintenance plans – to avoid recurring problems.

With more than years of experience in Singapore’s aircon industry, our skilled technicians deliver reliable, long-lasting solutions.

Conclusion

If your aircon is still not cooling after servicing, don’t ignore the signs. The issue could be as simple as low refrigerant or as complex as a faulty compressor. By understanding the possible reasons and engaging a trusted service provider like Letscool Aircon and Services in Singapore, you can ensure your air conditioning system delivers consistent cooling performance even in the hottest weather.

For a free consultation or to book a professional aircon check, contact Letscool Aircon and Services today.

11 Mandai Estate,

#05-15 Eldix,

Singapore 729908

Mail ID: info@letscoolaircon.com.sg

Service - Call: +65 9862 3678 (or) WhatsApp us: https://wa.me/6598623678

Installation - Call: +65 94507178 (or) Whats App us: https://wa.me/6594507178

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