Im thinkin about using a ac unit (ie. swamp cooler) to cool my tent. Would that be enough to cool down the tent or would i need to exhasut as well? I biult my tent myself and about to staple mylar to make the reflective walls while keeping the top open for vent so the swamp cooler can push the hot air to the top. The pics of my tent (withou the mylar walls) are in my journal, just click the link ^^.