A double-hung window -- that is, with two sashes that can move past each other either up or down -- is one of many window types to consider when you are designing or building a new house and remains a powerful symbol of home.
The next generation of home design and construction has to change – the system of homebuilding that creates oceans of low-quality, cookie-cutter homes will not survive unless it recognizes that fast-food homes are increasingly not on the menu.
Ideally, for (hot) climates, homes should have more exterior wall facing north (where there is infrequent direct sunlight, except early in the morning or late afternoons in midsummer), or south (where the high summer sun is easy to control with a roof overhang). Too much eastern and western exposure and the house will quickly heat up in summer, costing more to cool, or being uncomfortable, or both.