cooling fan speed

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Level 1

8 points

The fans are running at a very high speed have never heard them running before

iMac 21.5″, macOS 10.13

Posted on Apr 22, 2021 3:30 AM

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Answer 1

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Level 10

418,615 points

Here are some relevant support documents:

iMac: Fans run at full speed after computer turns on --> https://support.apple.com/HT204463

How to reset the System Management Controller (SMC) on your Mac --> https://support.apple.com/HT201295

About fans and fan noise in your Apple product --> https://support.apple.com/HT202179

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Answer 2

Level 9

72,224 points

What year iMac, from the "sub-model" in "About this Mac"?

Certain models seem to have a penchant for fan issues.

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