Good to see some new stuff here
Fornax, I have some doubts about this, though. If you draw the air from the crawl space, you simply recycle it as it comes from your house and not from outside. The fact that it is warm means that you are subtracting air from your home and pushing it back in. I bet you have had no dew inside the case, right?. With no cold air coming from outside there is no reason for condensing the out coming air.... At least that is what those temperatures indicate, inmho.