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8 Reasons Why There Are Sounds From An Aircon Unit

Modern aircon units are designed to keep noise levels to a minimum. High-efficiency aircon units include sound reduction technologies to keep noise levels under 55 decibels. Thus, if you notice unfamiliar sounds from your aircon unit, do not ignore them as it could be a warning that the system requires an upgrade or repair.

Ignoring the strange sounds from your aircon unit can result in high costs since these sounds could signal anything, from requiring a minor modification and expensive repairs to the replacement of the whole aircon unit. The earlier you establish what causes the noise and resolve the aircon issues, the better.

Below are 8 common sounds that your aircon unit can make and what they might mean:

1. Screaming

If your aircon unit produces a screaming or high-pitched whistling sound, shut down the aircon unit and contact a professional aircon servicing company. The probable reason for such noises is the leaking of the refrigerant, which can damage your aircon unit and threaten you and your family’s health. Screaming can also show high internal pressure inside the compressor, which is very hazardous. If your aircon unit turns itself off, don’t worry. It means that the sensor is working correctly and is protecting you from a potentially dangerous situation.

2. Rattling or Chattering

Rattling sounds can indicate that your aircon unit is beginning to worsen, and some parts are becoming loose. Another reason for rattling noises could be leaves or twigs that have blocked your aircon unit. chattering sounds could result from damaged electrical contractors in your aircon unit, and this can damage other parts, including the compressor, if not remedied. A loose fan can also cause rattling sounds. You can prevent this by tightening loose bolts and screws on the casing of your aircon unit, changing your aircon unit filters, and cleaning the coils of the condenser.

3. Humming

Although they are not serious, humming sounds still indicate that something within your aircon unit is not okay. Loose refrigerant piping and parts can result in vibrations and, if not corrected, can cause more severe maintenance aircon issues. Sometimes, buzzing or humming sounds indicate electrical issues. If your compressor hums and does not start, there might be an aircon issue with the motor, although the noise could be triggered by loose wiring.

4. Squealing

Fan and blower sounds might get transmitted in the duct system. Indoor blower motors and outdoor fan motors produce loud squeals when getting damaged. Malfunctioning blower housing and wheel can also produce squeals. For some aircon units, the sound is normal when the aircon unit starts. You should identify if the sound is common or new.

5. Buzzing

Buzzing aircon unit noises could signify: • The blower is getting out of balanced or damaged. • Your aircon unit filter requires replacement. • You need to clean the condenser coil. • The copper lines from the outside to inside are brushing each other. • The blades of your fan are out of balance or loose. • The outdoor fan motor is about to malfunction or lose. • There is debris in your aircon unit. • The refrigerant is leaking.

6. Clicking

Although the clicking of electrical elements at shutdown and start-up is normal, continuous clicking can signify an aircon issue. It could indicate a failing thermostat or a defective control. An aircon unit consists of a lot of electrical components, so it is crucial that you pay attention to potential electrical issues before they end up causing bigger aircon issues.

7. Clanking

Clanking sounds signify loose parts or parts that are out of balance. The components inside the closed aircon unit are likely damaged, and the compressor might get loose, likely requiring replacement. Such noises can also indicate that the outdoor fan or indoor blower is out of balance and colliding with other parts. If ignored, such issues can cause more significant aircon issues.

8. Banging

This is a sign of a broken or loose part, such as a crankshaft, a piston pin, or a connecting rod inside the aircon unit compressor. It can also signify an unbalanced indoor blower. A banging sound can also show that you need to replace your compressor.

It is expensive to replace or repair your aircon unit. Unfortunately, aircon units get damaged, leaving you with increased temperatures and repair costs. Getting an annual inspection can prevent most of these major aircon issues. A professional aircon servicing company can thoroughly inspect your aircon unit to identify possible faults and ensure that your aircon unit works correctly. For proper expertise and servicing, WhatsApp 338aircon and 338aircon.sg/promo for special prices.