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#221
Downstairs bedroom with all windows wide open. I chill it down for about an hour then bring pc down to room. Let it sit for a while so all components get cold before I start it up. It was 3' C this morning outside and really not much more if any warmer inside the room. :)
When it gets really cold out in the winter, like -15' C I just open a couple windows and hook up pipes to my rads from outside. I have to use fans then to help make sure no condensation hits pc. I have had it cold enough that the flex pipes running to rads have been covered in frost.