Magical Dwellings: Tiny Texas Houses in Focus

While the windows are certainly decorative, they're functional, as well. Opening all the windows creates a cross breeze which pulls out all the air immediately and replaces it with fresh air. But Brad also explained that the reason the houses stay as cool as they do, without air conditioning of any kind, is thanks to the Venturi effect, which you probably don't remember from high school, but you probably did learn about. The basic idea is that when air passes through a tight space, it speeds up and cools. Having small windows, on all sides of the house, and a cross breeze to force air to pass through, creates cooler air inside the house.