High-efficiency windows are an essential component
of passive house design and construction.

High-efficiency windows: Efficient windows are essential to the passive house design. They keep much more of the house heat inside than single-pane windows, and multi-pane windows with thermal-bridging aluminium frames. The specific windows used vary from climate to climate, but triple-paned windows with low-e glazing, argon gas and insulated frames are common.

The reason that multi-paned windows are important for heat and energy conservation can be visualised from this diagram ...

As you can see from the above, triple-paned windows, even without argon or other rare gases inside, retain much more of the heat of the interior air during winter than single-paned windows.

Links to pages about the seven precepts of Passive House design.


Very efficient Insulation

No thermal bridges

Air-tight construction

Great ventilation

Passive heating

High-efficiency windows

Passive solar gain

Prices / costs

Important considerations

Early perceptions

Design standards