Fan & Cooling Test
Test cooling system functionality
Bottom lineApple silicon MacBook Air has no fan, so silence is normal there. On models with fans, listen at idle in a quiet room (should be near-silent), then run a sustained load such as Geekbench or a video export: the fan should ramp up smoothly with warm air exiting near the hinge. Grinding or clicking means a failing bearing; no airflow under load means a blocked or dead fan.
Listen at Idle
In a quiet room, listen for fan noise when Mac is idle. Should be silent or very quiet
Generate Load
Run a sustained heavy task, such as a Geekbench benchmark or a video export, and let the machine warm up for a few minutes
Check Fan Response
Under load, fans should spin up smoothly without grinding, clicking, or rattling sounds
Feel Airflow
Place hand near vents (hinge area). You should feel warm air exhausting when fans are running
Warning: Apple silicon MacBook Air has no fan — silence and no airflow are normal on those models. Abnormal fan noises (grinding, clicking) indicate bearing failure; on fan-equipped models, no airflow under load may mean blocked vents or dead fans.