AIO coolers are quite safe when you’re buying from reputable manufacturers like ASUS or Corsair because they used factory-grade seals to prevent leaking. Also, most of the AIO coolers listed here come with a few years of warranty and that’s why you never have to worry about spending a few extra bucks to get an AIO cooler from a reputable manufacturer.  However, if you’re going for some Chinese brand to save a little something on the AIO cooler then I’m afraid that you might regret your decision in the near future. The low-quality AIO coolers are not factory sealed, and there’s a massive risk of chambers leaking out the liquid solution on the internals which could eventually total the whole rig, and that is why you should always aim for the better option.