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2011 iMac very loud and constant fan/blower noise

I have a 2011 iMac, running High Sierra. (I know, this is old!)

Beginning yesterday, there is a very loud and constant fan/blower noise.

I don't what do with this or if I should be concerned.


[Re-Titled by Moderator]


iMac 21.5″, macOS 10.13

Posted on Feb 10, 2022 2:02 PM

Reply
3 replies

Feb 10, 2022 2:35 PM in response to karepas

Don't slow the fan down...


Have you blown the dust out of the intakes lately?

What temperatures does this App report? Especially the GPU.

This App can be used to speed up the fans, all my iMacs would be dead without it.

Never ever ever drop fan speeds below the speed that the Mac itself is calling for.

MacFansControl…

https://www.crystalidea.com/macs-fan-control

2011 iMac very loud and constant fan/blower noise

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