What's Your Noisy Old Air Conditioning System Saying To You?

If you have an old air conditioning unit, it probably makes a comforting, familiar noise during operation that you've become accustomed to hearing over the years.  However, if your aging unit changes its tune, you may have cause for concern.  Read on to find out what those odd noises could mean and what you should do if you hear them.

A high-pitched squealing sound

The usual cause of a high-pitched squealing sound is a problem with the air conditioning unit's fan belt.  The ear-splitting squealing is caused by the fan belt slipping as the unit operates.  Fortunately, this is generally an easy, inexpensive fix that can be quickly sorted out by an experienced appliance repair technician.

A gentle hissing noise

If you hear a low hissing sound emanating from your air conditioning unit's vents, it could be caused by an air leak.  Leaky ducts can be repaired but shouldn't be neglected, as they can cause the unit to work harder and consequently use more power, which could lead to higher energy bills.

However, if the sound is coming from elsewhere in the air conditioning unit, a refrigerant leak could be to blame.  This is potentially a serious fault as it could interfere with, and impact on, the compressor or other important components inside the unit.   Repairs could be very expensive, and you might be best advised to replace the unit with a more modern one

A clattering or rattling noise

Clattering or rattling sounds are usually caused by loose connectivity inside the air conditioning unit's ducts.  However, the blower's motor or fan could also be responsible.  Loose connections are fixable, but a duff blower component could require replacement.

Loud banging sounds

If your air conditioning unit begins making loud banging noises, you could be in for trouble.  Although such sounds could be made by a minor fault such as a bent fan blade, the most likely cause is an issue with the compressor, which could mean replacing the whole air conditioning system.

Constant buzzing noises

If your air conditioning unit starts buzzing constantly, the most likely culprit would be an electrical fault.  A simple replacement of a minor component may solve the problem, but buzzing sounds can also be indicative of more serious issues with the unit's motor.

In conclusion

If you live in an area of Australia with a very hot summer climate, such as Perth, it's vital for your comfort that your air condition system is reliable, and a change of soundtrack could mean that it's time to say goodbye to your old unit.  Have a chat with a reliable local supplier to see what alternatives are available.