If your builder is smart about environmental design with Glass curtain Walls, he or she can potentially construct a home that will actually maximize natural heating and cooling by capturing the sun's warmth—or deflecting it. It's not a one-size-fits-all formula. The type of passive heating and cooling features you choose depends a lot on your home's regional climate.
If winter heating forms the bulk of your energy expenses, a south-facing wall helps you maximize solar heat throughout the day. South-facing walls tend to absorb the most heat due to their position—they receive the sun’s light at a more direct angle. That solar heat filters into your home's interiors, which can potentially help offset some of your heating needs. Conversely, if you live in a warmer climate, it's wiser to a glass wall on the north side of your home.