if you get a portable AC, where do you direct the exhaust?62 inch x 36 inch x 20 inch, using a 400W HPS. The issue isn't the light or tent I don't think, it's the ambient temps in the place where I live. I have an AC unit in the living room, but the air doesn't reach back into the bedroom area from it and when you combine that with all West facing windows and a black tar roof...well, temps inside get a bit hard to manage.