Air conditioning troubleshooting

Why is my aircon making noise?

A new rattle, buzz, grind or clicking sound is worth noting early, especially if it changes with fan speed or outdoor-unit operation.

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Why is my aircon making noise?

A new rattle, buzz, grind or clicking sound is worth noting early, especially if it changes with fan speed or outdoor-unit operation.

Noises worth noting

  • Rattling can come from panels, mounts, debris or worn parts.
  • Buzzing or clicking may point to electrical or control issues.
  • Grinding, scraping or loud outdoor-unit noise should not be ignored.

What to include

Describe the noise, where it comes from, whether it happens on start-up or all the time, and whether cooling performance has changed.

Related air conditioning questions

Why is my air conditioner making noise?

Noise can come from loose panels, fan issues, outdoor-unit problems, electrical components, worn parts or debris.

What air conditioner noises need attention?

Grinding, scraping, buzzing, loud rattling, clicking or noises that get worse should be checked.

Why does my split system rattle?

Rattling can be caused by loose covers, vibration, worn parts, debris or indoor or outdoor unit issues.

Can a noisy air conditioner still be used?

If the noise is loud, new, worsening or linked to poor cooling, it is safer to stop using the system and have it checked.

Can servicing fix air conditioner noise?

Servicing can help identify loose parts, blocked airflow, dirty components and other causes of noise.

Book an aircon service.

Send the job details through the form. A few clear notes now can save a lot of back-and-forth later.

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