2008 Energy STAR Windows Revisions

Last Updated: 
Friday, October 13, 2017

Software/Versions Affected:

Technical Analysis

August 4, 2008

LBNL has provided technical support to the DOE 2008 effort to revise the Energy STAR windows requirements. Our work focused on two main areas:

Updating the modeling assumptions for RESFEN in order to generate space heating and cooling energy impacts from windows in typical new and existing houses throughout the United States:

  • "RESFEN6 Modeling Assumptions for the 2008 Energy Star Window Analysis [PDF]
  • DOE-2 results of Typical New and Existing One and Two Story Homes:

New Construction

  • Gas Furnace / Electric Air Conditioner [XLS] [TXT]
  • Heat Pump [XLS] [TXT]

Existing Construction

  • Gas Furnace / Electric Air Conditioner [XLS] [TXT]
  • Heat Pump [XLS] [TXT]
  • Window Definitions [XLS]
  • Regression Expressions for DOE-2 results [XLS]

Taking RESFEN results for individual houses and developing national energy savings estimates for proposed revisions:

  • "A National Energy Savings Model of US Window Sales" [PDF]
  • Output Data from the LBNL National Energy Savings Model of US Window Sales [XLS]

    (Note: This is a Microsoft Excel spreadsheet — when Excel asks if you want to "Update links to other data sources" click on the "No" button — otherwise, you will have to click through several error messages before the spreadsheet will open).

  • County zone definitions used in generating maps for LBNL Presentations on August 13, 2008 [XLS]

LBNL Presentations at August 13, 2008 DOE Forum

  • Technical Support for the 2008 Energy Star Windows Revisions [PDF]
  • National Window Energy Savings Model: Application to Energy Star Criteria Revisions [PDF]
  • Tradeoff Analysis for E* Criteria Revision [PDF]
  • Energy Star Program Savings Estimate [PDF]