8 reasons why there are sounds from aircon

Modern air conditioners are designed to keep noise levels to the minimum. High-efficiency air conditioning systems include sound reduction technologies to keep noise levels under 55 decibels. Thus, if you notice unfamiliar sounds from your AC 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 air conditioning system can result in high costs since these sounds could signal anything, from requiring a minor modification and expensive repairs to replacement of the whole system. The earlier you establish what causes the noise and resolve the problems, the better.

Below are 8 common sounds that your air conditioning system can make and what they might mean:

1. Screaming

If your HVAC system produces a screaming or high-pitched whistling sound, shut down the system and contact a professional. The probable reason for such noises is the leaking of the refrigerant, which can damage your air conditioner and threaten you and your family’s health. Screaming can also show high internal pressure inside the compressor, which is very hazardous. If your AC 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 AC system is beginning to worsen, and some parts are becoming loose. Another reason for rattling noises could be leaves or twigs that have blocked your system. chattering sounds could result from damaged electrical contractors in your AC system, 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 AC, changing your air filters, and cleaning the coils of the condenser.

3. Humming

Although they are not serious, humming sounds still indicate that something within your HVAC system is not okay. Loose refrigerant piping and parts can result in vibrations and, if not corrected, can cause more severe maintenance problems. Sometimes, buzzing or humming sounds indicate electrical issues. If your compressor hums and does not start, there might be problems 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 AC units, the sound is normal when the system starts. You should identify if the sound is common or new.

5. Buzzing

Buzzing aircon noises could signify:

• The blower is getting out of balanced or damaged.

• Your air 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 loose.

• There is debris in your unit.

• The refrigerant is leaking.

6. Clicking

Although the clicking of electrical elements at shutdown and start-up is normal, continuous clicking can signify a problem. It could indicate a failing thermostat or a defective control. An AC 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 problems.

7. Clanking

Clanking sounds signify loose parts or parts that are out of balance. The components inside the closed 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 problems.

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 AC 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 air conditioning system. Unfortunately, air conditioners get damaged, leaving you with increased temperatures and repair costs. Getting an annual inspection can prevent most of these problems. An experienced HVAC system professional can thoroughly inspect your air conditioning unit to identify possible faults and ensure that your system works correctly. For proper expertise and servicing, whatsapp 338aircon and 338aircon.sg/promo for special prices.