MacBook Air(Early 2015) heat and fan issues

[wxxedu]

I have a MacBook Air Early 2015, and currently it is not working properly.
I have encountered at least twenty times of overheating and shutting down of this mac, especially while its charging and while I am not using it.
So, it appears like this:
I hear some loud noise from the fan, then I turn to take a look at it, its screen has frozen. I cannot move the mouse around. And then I touch my mac, it's running really hot--uncomfortably hot, hotter than times when I edit videos on it. Note that I do not run any power-demanding softwares on my mac. I basically used softwares like Anki(Flashcard), Notes, and that sort of stuff.
At first, I suspect it has something to do with the Duet display app, so I uninstalled it, however it did not help.
Then, I suspect it is some issue around charging, so I unplugged it and closed the lid before I went to bed last night, and it was 99% full. This morning I get back to my dest, only to find that the MacBook Air has been shut down, and after I opened it the battery is only 30% full. Note that this is not something normally would happen, because its batteries are still in great shape, and if I only use Anki I was still able to get around 8-10 hours of battery life.
I tried to open Activity Monitor and Intel Power Gadget to get the temperatures, the power usages, and the CPU usages. However, it turns out that the screen freezes before the computer heats up, so I was not able to get any important information.
I am not sure whether it's a hardware issue or a software issue. I have not encountered such issues in previous system versions. One thing that concerns me is that I am currently running the latest BETA VERSION of Mac OS CATALINA, and I did not notice such issues in the previous version. It could be a coincidence, but I don't know...
I don't know if anyone else has encountered this...And I don't know if any of you have any clues about what problem is this and how to deal with it.
Thanks

 

[Macdctr]

I have two 2015 MacBook Airs and use Duet on both. No overheating or fan issues using this app. I have Catalina Developer Beta 5 running on both as well and still don't have the issues that you're reporting above. Have you tried backing up your drive, reformat it and do a fresh install of Catalina to see if the problems you're seeing reappear? I realize all this takes time.

 

[Wickintime]

I opened my Air (11") to check the interior as the previous owner had dropped it and I wanted to straighten the back panel. I found the fan had a lot of dust caked onto to the vanes which required careful use of an artists brush and a vacuum cleaner to remove. It was clearly running at a much reduced efficiency level. After cleaning it runs like a dream.

I'm running Mojave 10.14.6 I suggest you might consider checking the fan in your machine, but make sure you have the correct screwdriver for the pentalobe screws in the back panel - they are available quite cheaply on line from several vendors.

 

[wxxedu]

I have two 2015 MacBook Airs and use Duet on both. No overheating or fan issues using this app. I have Catalina Developer Beta 5 running on both as well and still don't have the issues that you're reporting above. Have you tried backing up your drive, reformat it and do a fresh install of Catalina to see if the problems you're seeing reappear? I realize all this takes time.

Thanks buddy
I think that with your information, it is highly possible that something has gone wrong with the hardware.
I guess reinstalling Catalina would be a great option, and I would definitely want to try it if I have time. Or I can just try with the windows to go on my external hard drive, cuz that will tell me whether this issue is software related or hardware related before reinstalling.
Thanks
[doublepost=1565617587][/doublepost]

I opened my Air (11") to check the interior as the previous owner had dropped it and I wanted to straighten the back panel. I found the fan had a lot of dust caked onto to the vanes which required careful use of an artists brush and a vacuum cleaner to remove. It was clearly running at a much reduced efficiency level. After cleaning it runs like a dream.

I'm running Mojave 10.14.6 I suggest you might consider checking the fan in your machine, but make sure you have the correct screwdriver for the pentalobe screws in the back panel - they are available quite cheaply on line from several vendors.

Thanks
This is something that I have always wanted to do but have not find anytime to do The tricky thing for me is that I currently do not have the pentalobe screw drivers. I am going to get one.
Nice suggestion!

 

[Macdctr]

I opened my Air (11") to check the interior as the previous owner had dropped it and I wanted to straighten the back panel. I found the fan had a lot of dust caked onto to the vanes which required careful use of an artists brush and a vacuum cleaner to remove. It was clearly running at a much reduced efficiency level. After cleaning it runs like a dream.

I'm running Mojave 10.14.6 I suggest you might consider checking the fan in your machine, but make sure you have the correct screwdriver for the pentalobe screws in the back panel - they are available quite cheaply on line from several vendors.

I have found using compressed air works as well. On both of my Airs, I have taken off the back cover and ensured the fans and insides were dust free. I have also reapplied Arctic Silver 5 CPU thermal paste after cleaning the CPU and heatsink as the computer is several years old.

 

[Wickintime]

My difficulty with using a blast of compressed air is that I am never confident where the lumps of caked dust end up. Some of them can become lodged under the circuit boards or the battery and could lead to further problems down the line.

I think the brush & vacuum solution is safer in this case.