My upstairs gets wicked hot in the summer. I think partly because it was designed to be warmer in the winter and partly because someone built a wall in the middle of the room. The east and west walls are half window, which add radiant heat in the winter and should allow a nice cross-breeze in the summer (especially combined with the dormer windows on the south side). But the wall blocks the breeze, now all it does it slam the bedroom door shut. Downstairs stays tolerable because the east wall is now a laundry room and the west wall windows are covered by the porch.