I know the northies are going to hate this, but we are maybe a few weeks away from summer in Houston. I am dreading the garage during the summer and I need some way to cool it down. Unfortunately, I have no window, and the garage is surrounded by a brick facade that I really don't want to cut into. I am considering either a portable air conditioner or some setup where I put a window unit under my garage door and then make an insulated blocker for the rest of the door. What have you tried that worked out well?