Passive house is a standard for energy efficiency in a building, which reduces the building’s ecological footprint. It results in ultra-low energy buildings that require little energy for space heating or cooling. To meet the requirements of the Passivhaus standard, windows must be manufactured with exceptionally high R-values (reducing fluctuations in heat) . These normally combine triple-pane insulated glazing with air-seals and specially developed thermal break window frames. For unobstructed south-facing Passive House windows, the heat gains from the sun are, on average, greater than the heat losses, even in mid-winter. Our knowledgeable consultants can help you configure your windows to ensure optimal performance and Passive House compliance.