Nothing is more frustrating than switching on your air conditioner on a hot day, only to find that it isn’t cooling the room properly. A malfunctioning AC unit can disrupt your comfort, affect sleep quality, and even lead to higher energy bills. When this happens, homeowners are left wondering why the aircon is not cold.
This guide will explore the most common reasons why your air conditioner may not be cooling effectively, as well as practical solutions to fix the problem before it worsens.
Common Causes of a Non-Cooling Air Conditioner
If your air conditioner is running but not cooling, several factors could be at play. Below are some of the most frequent causes and their potential fixes.
Clogged or Dirty Air Filters
- Problem: Over time, air filters collect dust, dirt, and debris. When they become clogged, airflow is restricted, reducing cooling efficiency.
- Solution:
- Check your air filters monthly and clean or replace them as needed.
- In most cases, cleaning the filter restores normal airflow and cooling.
Low Refrigerant Levels
- Problem: Refrigerant is the substance that cools the air inside your AC unit. A leak or insufficient refrigerant levels can cause the system to blow warm air instead.
- Solution:
- If your aircon requires frequent gas top-ups, it may have a leak.
- Call a professional to inspect and repair the leak before refilling the refrigerant.
Faulty Thermostat Settings
- Problem: Incorrect thermostat settings may cause the aircon to cycle on and off too quickly, leading to uneven cooling.
- Solution:
- Set the temperature lower than the current room temperature.
- If your aircon has a smart thermostat, check if the settings have been changed.
Blocked or Dirty Condenser Coils
- Problem: The outdoor unit of your AC system (condenser) releases heat outside. If it is covered in dirt, dust, or debris, heat cannot be properly expelled, leading to reduced cooling efficiency.
- Solution:
- Inspect the outdoor unit for dirt or obstructions.
- Clean the condenser coils using a soft brush or seek professional aircon servicing in Singapore.
Faulty Compressor
- Problem: The compressor is the heart of the air conditioning system. If it is damaged or malfunctioning, the AC will fail to cool properly.
- Solution:
- Listen for unusual noises coming from the outdoor unit.
- If the compressor is faulty, you may need a technician to repair or replace it.
Aircon Chemical Wash Is Needed
- Problem: Accumulated dirt and mould inside the AC system can reduce cooling efficiency. Even if the filters and coils are cleaned, a deeper chemical wash may be required.
- Solution:
- Contact a service provider for aircon chemical wash in Singapore for deep cleaning.
- This service helps remove stubborn dirt, bacteria, and mould, restoring the AC’s cooling power.
How to Fix an Aircon That Is Not Cooling
If your AC is not blowing cold air, here are some quick troubleshooting steps you can take before calling a professional.
Check for Obstructions
- Make sure there are no furniture or objects blocking airflow from the unit.
- Ensure that doors and windows are properly closed.
Inspect the Air Filters
- If they are clogged, clean or replace them immediately.
- Keeping filters clean can improve efficiency by up to 15%.
Adjust the Thermostat
- If the room feels warmer than expected, lower the thermostat temperature by a few degrees.
- Avoid setting it too low, as it may strain the AC system.
Reset the Circuit Breaker
- Sometimes, power fluctuations can cause partial malfunctions in the AC system.
- Turn off the AC unit, reset the circuit breaker, and restart the system.
Consider Professional Servicing
- If your AC remains warm after trying these fixes, it may require professional servicing.
- A licensed technician can diagnose issues and perform necessary repairs.
When to Call for Professional Aircon Servicing
While basic maintenance can be done at home, some aircon issues require expert handling. You should call a professional if:
- Your AC stops cooling completely, even after filter cleaning.
- You notice water leaks or unusual noises from the unit.
- The aircon emits a strange or burning smell.
- The system turns on and off repeatedly without cooling the room.
Choosing the Right Aircon Service Provider
When selecting an aircon servicing company, consider the following:
- Experience & Certifications – Ensure the provider has licensed technicians.
- Service Range – Look for companies that offer chemical washes, gas refills, and compressor repairs.
- Customer Reviews – Check online reviews to verify customer satisfaction.
Preventative Maintenance to Keep Your Aircon Cold
To avoid future cooling problems, regular maintenance and servicing are essential. Here’s what you should do:
- Clean or replace air filters every 2-3 months.
- Schedule professional servicing at least twice a year.
- Opt for an aircon chemical wash if the unit has mould or airflow blockages.
- Keep the outdoor unit clear of debris for optimal performance.
Fact: Regular servicing reduces energy consumption by up to 20%, helping lower electricity bills.
Final Thoughts
A non-cooling aircon can be caused by several factors, from dirty filters and low refrigerant levels to thermostat issues and compressor malfunctions. While some minor issues can be fixed at home, others require professional aircon servicing to prevent further damage.
To keep your aircon running efficiently, schedule regular maintenance and consider deep cleaning services when necessary. Investing in proper care now can save you money on costly repairs in the long run.
If your aircon is still not cold after troubleshooting, it may be time to call a professional for a detailed inspection and servicing.
