Is it dangerous to rapidly cool a computer using a can of compressed air held upside down?

9 Answers

  • 6 months ago
    Best answer

    Take a glass and pour boiling water into it. Empty the water and then drop the glass into ice water and see what happens. Just make sure your wear safety specs.

    A similar thing will happen to your system. Sudden rapid contraction of a substance not designed or not capable of handling it will break, shatter or at least form micro fractures that will cause immediate to long term damage to the substance. Then there's the moisture that is formed by the compressed air escaping the can. This moisture will short circuit the fine electrical connections that a computer has.

    The fact that you asked this question points to the knowledge that you have that it is NOT a good idea to rapidly cool something or use compressed air in your computer. The only use for the compressed air can is to clean a keyboard and it sucks at that anyway.

  • 6 months ago

    And buy a computer fan u sit your laptop on top of. They are great. Very effective and add years to the computer, considering heat is the most common reason for harddrive crashes (I was told by a computer tech few years ago).

  • 6 months ago

    Yes. It's safer than leaving it out of the fridge! Pressure is proportional to temperature. As temperature increases, so does pressure. As temperature decreases so does pressure.

    • brieezy6 months agoReport

      Is this a scientific rule or something? It sounds official! :)

  • keerok
    Lv 7
    6 months ago

    Rapidly cooling a hot computer is dangerous. You can break some circuits and solders on the board. Using a can of compressed air will not rapidly cool the computer. It will only knock loose any dirt and cobwebs in it.

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  • 6 months ago

    Yes. Components can develop stress cracks.

  • 6 months ago

    I feel like you already know the answer to that lol

    But yes, and the real risk is the moisture being released when holding the can upside down.

  • 6 months ago


    Aerosol cans of "compressed air" typically contain liquid propane, which is highly inflammable.

    Older ones used a kind of Freon, as used in refrigeration.

    (An aerosol can is not capable of containing the pressures that would be needed to store normal air in worthwhile amounts).

    The liquid is extremely cold and the sudden rapid cooling of some areas of a component can cause internal stresses and cracking.

    It s not a good idea for many reasons.

  • Satan
    Lv 7
    6 months ago

    Using a can upside down is not a good start as its inefficient

    Then you go to thermal shock, and it s not a good idea either

  • Anonymous
    6 months ago

    I wouldn't recommend it. Just turn it off for a bit, and give it some time to let it cool naturally

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