Air conditioners are meant to provide cool and comfortable air silently. But when it starts making strange noises, it can be both annoying and concerning. Noisy air conditioners are not only disruptive but can also indicate underlying issues that need attention. In this article, we will explore the common causes of noisy air conditioners in Singapore and provide effective solutions to restore quiet and efficient operation.


Disclaimer: if unsure of anything below, just consult a professional.


Common Causes of Noisy Air Conditioners

Loose or Misaligned Parts:

Loose screws, bolts, or fan blades can cause rattling or vibrating noises.

Solution: Tighten all accessible screws and bolts. For fan blades, consult a professional to realign or replace them if necessary.


Worn Bearings:

Bearings in the blower motor or fan motor can wear out over time, leading to grinding or squealing sounds.

Solution: Lubricate the bearings or replace them if they are excessively worn.


Dirty or Clogged Components:

Dirt, dust, and debris can accumulate on fan blades, causing them to become unbalanced and noisy.

Solution: Clean the fan blades and other components regularly to prevent buildup. Consider professional cleaning for thorough maintenance.


Refrigerant Leaks:

Hissing or bubbling noises may indicate refrigerant leaks, which can lead to reduced cooling efficiency and potential damage to the compressor.

Solution: Schedule a professional inspection to locate and repair refrigerant leaks. Avoid DIY attempts, as handling refrigerant requires specialized training and equipment.


Faulty Compressor:

A malfunctioning compressor can produce loud banging or clanging sounds, signaling serious issues.

Solution: Contact a professional technician immediately to diagnose and repair compressor problems. Delaying repairs can lead to further damage and costly repairs.


Clogged Drain Line:

A clogged condensate drain line can cause gurgling or bubbling noises as water struggles to drain properly.

Solution: Clear the drain line of any obstructions. Regularly flushing the drain line with a mixture of water and vinegar can help prevent clogs.



Tips for Quieter Air Conditioners

Regular Maintenance:

Schedule routine maintenance checks with a professional BCA-registered aircon servicing company to identify and address potential issues before they escalate. You can check if a company is BCA-registered via the BCA Directory


Keep Components Clean:

Regularly clean and inspect the air conditioner’s components, including the fan blades, coils, and filters, to prevent dirt and debris buildup.


Proper Installation:

Ensure the air conditioner is properly installed according to manufacturer guidelines to minimize vibration and noise.


Upgrade to Quieter Models:

Consider upgrading to newer, quieter air conditioner models with advanced sound-dampening features for a more peaceful indoor environment.


Noise Reduction Accessories:

Install noise-reducing accessories such as vibration pads or soundproofing materials to dampen vibrations and minimize noise transmission. E.g. you can find such items on Lazada


Professional Repairs:

For persistent or severe noise issues, enlist the help of a professional aircon repair technician to diagnose and address the underlying cause effectively.



Noisy air conditioners can disrupt your peace and indicate potential problems that require attention. By identifying the common causes of noise and implementing the appropriate solutions, you can restore quiet and efficient operation to your air conditioning system. Remember to prioritize regular maintenance and seek professional assistance when needed to ensure your air conditioner operates smoothly and silently, providing cool comfort in the heat of Singapore. For expert aircon servicing and repairs, trust the experienced team at Infinity Air, with over 20+ years of experience, to keep your air conditioner running at its best. 


Infinity Air is available via Whatsapp at +65 9383 6574