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MacBook Air 2020 fan

Hi,


I recently bought a MacBook Air in June but from about the second use, the fan is loud and lasts 30 seconds soon as I start it up. I've reset the SMC, and NVRAM PRAM but nothing has changed. Even when I'm not doing anything, the fan seems to come on pretty loud. Is this normal for that to happen?

I did have a MacBook Pro (early 2015) before this laptop and never had that promblem with the fan unless I was running a few apps at once.

Posted on Oct 6, 2020 6:39 PM

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Posted on Oct 6, 2020 9:00 PM

That is normal for this model. The heatsink on this particular model does not extend over to the fan so the fan does not actually move air over the heatpipe fins to cool the heatsink. I couldn't believe the design when I first saw it. In fact the fan on this particular model will run up to about 8,000 rpms to make up for this poor design choice. With most other Macs the maximum fan speed is about 6,500 rpms. It is an extremely poor design in my opinion.

9 replies
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Oct 6, 2020 9:00 PM in response to a_knight

That is normal for this model. The heatsink on this particular model does not extend over to the fan so the fan does not actually move air over the heatpipe fins to cool the heatsink. I couldn't believe the design when I first saw it. In fact the fan on this particular model will run up to about 8,000 rpms to make up for this poor design choice. With most other Macs the maximum fan speed is about 6,500 rpms. It is an extremely poor design in my opinion.

Nov 14, 2020 2:30 PM in response to a_knight

I agree with HWTech. And when you contact Apple support about it, they pretend that they know nothing about a noisy fan and CPU heating issue in the Macbook air. And yet a search here or anywhere on the Internet will quickly reveal there is a big problem. Did Mac do this poor design in order to make their new Silicon M1 look even better? I don't know but in any case this is really shoddy work by Apple and my trust in their products has been destroyed. I am so very disappointed with my Macbook and really regret the purchase. Every time you try to run Skype, Zoom or any other video conferencing software, the fan goes nuts. Solution? I am going to install a thermal pad under the heatsink and on top of it. A lot of videos show how to do this and it apparently helps a lot. And of course, put your laptop on a stand that has good ventilation. Or, cut your losses and sell it now unless you want to just use it as if it were a non-tactile iPad with a keyboard...

Nov 15, 2020 3:08 AM in response to a_knight

I bought a 2020 MBA with the core i3 and it runs pretty warm, I can only imagine a quad i5 or i7 would run even warmer. The fan isn't cooling the small heatsink directly. It is only there to circulate air throughout the chassis to aid in reducing heat. Actually these CPU's are so low powered in many designs they probably don't need anything more than a good sized heatsink. I think the MacBook Air just didn't have the room to accommodate a bigger heatsink. Apple probably added the fan to address the potential heat issues. A fan was not used in the 12 inch MacBook which used a similar low powered CPU but was only a two core model. The small heatsink certainly can become overwhelmed with any intensive tasks that push CPU to max cycles. If this is happening a lot you're better off buying a MacBook Pro with a better cooling solution.

Nov 16, 2020 12:28 AM in response to snowleapard2020

Yeah, it's really shameful what they are foisting on their customers. I've done a clean install of Catalina and although the rendering score is better, it runs at 100°C and and fan speed of 8046rpm! And it won't wake up from sleep or restarts because of error during sleep when cables are connected to the two thunderbolt ports. I'm going to call support again and keep doing it so that hopefully the message gets through. I wish they'd just admit it was a bad design.

Nov 21, 2020 7:57 AM in response to monaliza96

Well, I've sent mine back to Apple to be repaired. Support doesn't think it is normal that it runs hot with a fan at high speed every time I launch Zoom or Skype or a lot of browser windows. Also it shuts down by itself or doesn't wake up from sleep. They don't think having things connected to the lightening ports should affect it adversely either.

MacBook Air 2020 fan

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