How we keep the pc working in tropical heat

Our pc is opened on one side with a fan behind,cooling the whole system included the modem on top.We placed the modem upside down,because the ventilation slots are at the bottom,while the warm air usually takes the direction upwards.:)
That keeps our hardware running flawless,even at the hottest days.

I'm also cleaning the rips of the processor cooling device every couple of months,what makes the pc running pleasantly silent,too.