There has been a ton of talk about condensation on forum so I figured it time to make a sticky.
Cooling below ambient temperature may result in condensation problems, which is something you'll definitely want to avoid. Using insulating tape will prevent condensation on the parts you can insulate, but it won't protect you from condensation on cooled components themselves.
Whether condensation occurs, depends on the temperature of the cooled object, on the ambient temperature, and on the air humidity. Here is a table that will give you an indication whether you are risking condensation problems:
All values are in °C.
Example for using this table: Ambient temperature=20°C, air humidity=65%. Result: Condensation will occur at a surface temperature (CPU, Peltier cooler) of 13.2°C
I hope this chart will help everyone, if you still have questions feel free to ask them here.
