Mac fan is constantly running at full speed and very loud
Your Mac is overheating because something is using too much CPU power. Check Activity Monitor to see which app is the culprit, close it, and the fan should stop.
When your Mac's fan runs at full speed, it means the processor is working too hard and producing too much heat. This happens when an app or background process is using too much CPU. We'll find which app is the problem and close it.
Risk: Medium
⏱ 10–15 minutes
Beginner
⚡ Before you start
- ✓Know that loud fan noise means your Mac is working hard, not broken
- ✓Be ready to close apps or processes
- ✓Have important work saved before closing anything
Fix-IT-Bot will walk you through each step, just tap, no typing needed.
Skip, I just want a technicianCommon mistakes to avoid
- Thinking the fan noise means your Mac is broken when it just means something is using a lot of power
- Not closing the app even after finding it uses 90% CPU
Signs you need professional help
- If the fan is still running constantly after closing all apps and checking Activity Monitor, the fan vent be clogged with dust or the thermal system need service. Give us a call.
Book a technician
We can fix most issues remotely in 15 minutes. Book your weekend slot and we handle the rest.
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Most issues are resolved remotely in 15 minutes. Weekend appointments only, no parts, no in-home visit needed.
