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NFRC Approved Software
Heat Transfer Modeling Software 
A Windows-based program used for modeling and calculating heat flow through framing systems.
THERM 7.8.71 is authorized to be used effective August 18, 2023 and beginning October 1, 2023, THERM 7.8.71 will be the only approved version. THERM 6.3 may be used indefinitely for frame/spacer components in the CMA Program. 
A Windows-based program that calculates the overall thermal transmission of window systems.
WINDOW 7.8.71 is authorized to be used effective August 18, 2023 and beginning October 1, 2023, WINDOW 7.8.71 will be the only approved version. WINDOW 6.3 may be used indefinitely for glazing components in the CMA Program Thermochromic Utility The Window 7 thermochromic glass layer utility.exe (download link below) can be used to merge a set of laminate entries in a W7 library into a single, dynamic, (thermochromic) glass layer for use with an Environmentally Controlled Dynamic Glazing(ECDG) product. The use of this tool is detailed in Section 8.20 of the THERM 7 / WINDOW 7 NFRC Simulation Manual. When installing the software, please download both files. Initially use the “W7 thermochromic glass layer utility.EXE” file in the “Pleotint.ZIP” file. If you have any difficultly, use the “SETUP.EXE” file in the “Pleotint LBNL Window utilitiesSetup.ZIP” file. Learn More
This library update contains NFRC-approved spectral data for the WINDOW analysis program.
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A Windows-based program for analyzing optical properties of glazing system.
Note: this software is approved for creating laminates and applied films per NFRC 303 and NFRC 304, respectively. Learn More
A Web-based program for rating non-residential fenestration products, consisting of a web application and web-based application.
This software is only authorized for use with the CMA Product Certification Program. Annual invoices will be issued in January. Users may terminate their participation by notifying staff cmainfo@nfrc.org. Learn More
A Windows-based program used for estimating the energy effect of fenestration products on typical one and two story homes. 
A tool designed to support the systematic evaluation of alternative fenestration systems for project-specific commercial building applications.
COMFEN provides a simplified user interface that focuses attention on key variables in fenestration design. Under the hood is Energy Plus, a sophisticated analysis engine that dynamically simulates the effects of these key fenestration variables on energy consumption, peak energy demand, and thermal and visual comfort. The results from the Energy Plus simulations are presented in graphical and tabular format within the simplified user interface for comparative fenestration design cases to help users move toward optimal fenestration design choices for their project. Learn More
A program used to collect THERM model temperatures for use in calculating the Condensation Index rating.
User Manual for CI Temperature Reading Tool (V2.0.7.2) is an approved software program designed to obtain interior surface temperatures of THERM models per ANSI/NFRC 500, Procedure for Determining Fenestration Product Condensation Index Ratings. Supplemental documents Tool Manual This tool is used in association with the CI User Tool manual located on the Technical Documents page. |
