Custom case design advice: condensation

[amaturepc]

Building a custom case for a mini itx board in an old RV. The problem is that condensation will build up in the vehicle if I don't heat it up regularly. I'm not spending to much money on this experimental desktop build incase it should take damage from it. But my question is should I turn the fan so it blows air into the case (which is gonna be fairly enclosed to avoid damage from spills etc.) or out? The case will have little ventilation as mentioned. It will only be about 180x180x100mm and have one 80mm fan. There will be just enough space for a 70mm wide gpu in case I feel like upgrading it too.

 

[kanewolf]

Unless you cool something below ambient temps, there is no chance of condensation.

 

[amaturepc]

Well I guess that's part of the problem, cold surfaces coming in contact with warm moist air. Mostly human breath that builds up during the night. Just considering the best placement for the case and if it's stupid to blow all that air straight onto the cold motherboard.