Window Systems for High-Performance Buildings provides an overview of a broad range of window technologies and their application to commercial buildings. Other suggested publications are also listed.

Fact Sheets

The Commercial Windows fact sheets provide targeted information on specific building types and locations that have particular unique concerns.

Simulation Software

Numerous software tools exist for understanding and analyzing the impact of window choices on commercial buildings. They range from window-specific analysis tools to design guidance tools to whole building energy software.


Definitions of many of the terms used on this site or that are useful for understanding window performance.

Outside Resources

Many organizations provide additional information on windows in commercial buildings; the links provided here highlight some of the more important, useful outside resources.


Facade Design Tool



Window Technologies

Case Studies

Tools & Resources