NFRC - National Fenestration Rating Council
 
WE'RE CHANGING THE WAY AMERICA SHOPS
FOR WINDOWS, DOORS AND SKYLIGHTS
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Software

Heat Transfer Modeling Tools for Fenestration Products

NFRC Approved Software List

THERM 5.2 - A Windows-based program used for modeling and calculating heat flow through framing systems

WINDOW 5.2 - A DOS-based program that calculates the overall thermal transmission of window systems

Spectral Data Library - This library update contains NFRC approved spectral data for the WINDOW analysis program.

FRAME 4.0 - A Windows-based program used for modeling and calculating heat flow through framing systems

OPTICS 5.1.02 - A Windows-based program for analyzing optical properties of glazing system.  Note:  this software is approved only creating a laminant for NFRC according to the NFRC document Creating a Laminate in Optics for NFRC.

Other Useful Software

RESFEN 3.1 - A Windows-based program used for estimating the energy effect of fenestration products on typical one and two story homes