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Noisy Air Compressor? This is What Your AC is Telling You - Megafurniture

Noisy Air Compressor? This is What Your AC is Telling You

If you are reading this article, you might be wondering what the loud noise from your air compressor means. Does it mean there is a problem with your air conditioner’s compressor? How can you fix your aircon compressor noise?

Read on in this guide to understand what your noisy air compressor is telling you.

What Causes Aircon Compressor Noise?

What Causes Air Compressor Noise?

Your air conditioner's compressor is responsible for circulating the refrigerant throughout the whole unit to effectively cool the air. This is supposed to operate quietly, so if you hear loud sounds from your air compressor, it might be an indication of a problem.

Banging or Rattling Noise

Banging or Rattling Noise

If your air compressor is producing some banging or rattling sounds, it may mean that it has some loose parts. This may also indicate that debris like stones, screws, etc. is trapped inside your vents. Unfortunately, if your air compressor is the problem, the repair professional will need to replace the whole compressor since this part is thoroughly sealed. 

Helicopter-Like Sounds

Helicopter-Like Sounds

Whirring sounds may indicate issues with the blades or motor. These include bending or misalignment of the blades and some debris that might be hitting your fans. If you’re hearing these sounds, make sure to also check the motor's lubrication.

Grinding Noise

Grinding Noise

A grinding noise may indicate a faulty or overworked air compressor. This is more often experienced by older air conditioner units or those that do not undergo regular tune-ups.

A faulty air compressor will affect the unit’s cooling performance and will require a replacement. If the air conditioner is already old, a professional may suggest replacing the whole air conditioner. 

Buzzing or Humming Sounds

Buzzing or Humming Sounds

Grounded or faulty wiring, exposed cables, or other electrical issues may cause your unit to produce a buzzing or humming noise. Quiet humming sounds are caused by the energy current, but experiencing this at a high frequency can indicate some problems with your wiring.

Hissing Noise

Hissing Noise

A hissing noise may indicate clogs, leakage, or blockage in your air compressor. If left unchecked, this can escalate and further damage your air conditioner. A refrigerant leak may also harm your health, so if you suspect a refrigerant leak, get your air conditioner checked immediately.


Quick Tips To Minimise Aircon Compressor Noise

  • Ensure your aircon system is regularly serviced. Clean filters and well-lubricated parts can significantly reduce aircon noise.
  • Ensure the compressor is correctly installed on a solid, level surface. Misalignment can lead to unnecessary vibration and noise.
  • Consider installing sound blankets around the compressor. These specially designed covers can absorb sound, effectively reducing aircon noise.
  • If possible, position the compressor away from windows and common areas to minimise noise intrusion.
  • Technology has advanced, and newer models are designed to operate more quietly. Consider upgrading!



Even the best aircon in Singapore is bound to produce sounds as its internal parts are functioning and doing different tasks at the same time. However, if you hear some weird noise from your unit, it’s crucial to identify the cause immediately. Some sounds can be the result of minor issues that can still be fixed. However, if these loud sounds are ignored, your unit may not just be loud and disturbing but may experience more damage that cannot be addressed by simple repairs.

If you are in need of air conditioner repairs, check with your manufacturer if the fix is covered under the warranty. To prevent costly major air conditioner repairs, make sure to give your air conditioner proper maintenance.

Is it time to change your air conditioner? Browse through Megafurniture’s extensive collection of high-quality and energy-efficient air conditioners from your trusted brands. 

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