I did a search and come up empty on the answer I'm looking for so here it goes. I just purchased a 10,000 BTU portable air conditioner. I put it in my tent, but the AC is causing a pretty bad negative pressure effect, which normally I would say is a good thing. But what I am worried about is burning up the fan in my AC prematurely because it is having to work twice as hard to cool the tent. Is my thinking correct and I need to fabricate something to be able to attach to a duct and run through my port holes?