(1 CEU) This lesson focuses on the characteristics of windows and how these characteristics relate to a windows energy efficiency. Windows have changed significantly over the past 30 years, and there are a lot of recent developments that we discuss in this lesson including the following.

  • Insulated glass units: glass type, spacers, and fillings between the pains.
  • Window-frame and sash materials.
  • Window opening and how that affects air leakage.