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Certification criteria for Passive House Transparent Building Components

Transparent components
( pdf 352 KB)
  • Window frames
  • Frames for fixed glazing
  • Sliding doors
  • Curtain wall systems
  • Sloped curtain wall systems
  • Roof windows
  • Skylights
  • Glazing

Transparent component seals

The Passive House Institute has introduced efficiency classes for windows and other transparent building components in order to help set highly energy efficient products apart at a glance.






The various climate regions are symbolised by intuitive pictogram combinations: a snowflake stands for "cold" while a sun stands for "warm"; a cloud stands for "temperate" and rain drops for "humid". A combination of three suns and one rain drop, for example, stands for a "very hot and humid" climate.

All certifications awarded until now were only valid for cool, temperate climates such as that of central Europe (represented by one snowflake and one sun). PHI will not be issuing certification for regions with less stringent performance requirement than the cool, temperate climate so as to protect against a possible watering down of the Standard. Currently, seals for transparent building components are being awarded for the following regions: cool, temperate (one snowflake and one sun), cold (one snowflake) and arctic (two snowflakes).

All the technologies and components needed to design and build a window for cold climate regions are already available on the market. Two such window studies were introduced at the 2012 International Passive House Conference. More research and development is still needed, however, In order to produce a window that would meet the requirements of an arctic climate.


   

Climate icon legend

Arctic
Cold
Cool, temperate
Warm, temperate
Warm
Hot

Very hot

The map below shows the various climate regions for Certified Passive House Windows. From the map, it is clear that triple-paned windows dominate in the cool, temperate and very hot and humid climates, although in the latter with an additional sun protection layer. Double-paned windows, however, play subordinate roll. Quadruple-paned glazing will have an increasingly important role to play. It is important to note, however, that the arctic regions, for which there is not yet any truly adequate glazing available, are very sparsely populated - such glazings are thus vastly less important worldwide than the map below would have it seem.


Climate map legend


Arctic
Cold
Cool, temperate
Warm, temperate
Warm

Hot

Very hot
Transparent components
( pdf 352 KB)
  • Window frames
  • Frames for fixed glazing
  • Sliding doors
  • Curtain wall systems
  • Sloped curtain wall systems
  • Roof windows
  • Skylights
  • Glazing

   
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