A Passive House is a comprehensive system, high performance triple-glazed windows with super-insulation Low-E glass (product like SGG ACTIVE Pro 0.6), limitation of thermal bridging and excellent warm edge spacer bar (such as SWISSPACER?) all make possible extraordinary reductions in energy use and carbon emission. Avoidance of heat gain through shading and window orientation also helps to reduce the cooling system load, which is similarly minimized.