iMac fans spinning loudly (Catalina)

With the latest update of Catalina (10.15.4 (19E287)), my late-2012 iMac fans are spinning loudly. Not full blast, but loud enough.

We’ve reset the SMC but nothing improved.

Anyone else experiencing this? Any suggestions?

Thank you!

Running Chrome by any chance? That does it for me frequently.

1 Like

Oh that’s a good point. Some vacuuming or compressed air could def help.

1 Like

Did another SMC reset yesterday, this time at the ‘other’ end of the power cable. After, the fans ran for a bit, but have calmed down.

I’ll monitor today. And I’ll try @Wolfie’s suggestion.

@Wolfie - so would you just power the iMac down and vacuum at the larger vents?

1 Like