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Keeping your Mac cool during the hot weather

Whilst some of us may relish the hot summer weather, for our Macs it posses a potential threat that could lead to serious and expensive hardware failure. Every Mac has a number of fans inside it and these are designed to suck in cooler air from the surrounding environment and pass it over the hot components for it to be expelled before the whole process is repeated. If there is only hot air outside the Mac then this will slowly become hotter as it gets pulled through the Mac and expelled again. Soon the whole thing can become a self fulfilling prophecy unless your ensure the external air is cooler than the internal air within the Mac. Here are 5 tips to ensure your Mac stays cool when the weather hots up.

1) Make sure that the exhaust vents are clear from obstructions. On an iMac these are at the top of the screen at the rear, on a laptop they are to the sides and on Mac Pros these are at the rear.

2) Ensure the fan vents are clear from fluff and positioned well back from the wall or desk. Because the fans suck in air (and what ever is in it) these vents can gather dust or fluff. The circular vent near the power socket on the iMacs often get covered in dust reducing the efficiency of the air cooling system and Mac Pros are particularly prone to over heating if they are pushed back against the wall or the back of a desk.

3) If you work in a particularly hot office then consider setting up a small desk fan cooling the back of your Mac. 

4) Laptops are particular prone to overheating due to the smaller cavities for air to flow through within the machines. If you work with your laptop on a flat desk, then try placing items under each corner (eg 4 x erasers) of the laptop to ensure there is some airflow below the base for heat to escape.

5) Turn your Mac off overnight to give it a rest and it will give an opportunity for the surrounding air to cool down.