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Technical Documents
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Technical Documents

One of NFRC's main functions is to promulgate technical standards that establish uniform procedures for determining the various energy performance ratings: including U-factor, Solar Heat Gain Coefficient (SHGC), Visible Transmittance (VT), and Condensation Resistance.

2014 (Current Document Cycle) - Revised April 2014 

NFRC 2014 documents have been approved by NFRC membership and The Board of Directors for publication. Implementation date for 2014 rating system was April 2014. 

For NFRC Certification of fenestration products, either WINDOW5/THERM5 or WINDOW6/THERM6 may be used for the simulation of those products. However, after July 1, 2011 only WINDOW6/THERM6 will be authorized for NFRC Certification.

By accessing and downloading NFRC documents from this webpage, the user agrees to abide by the terms of use.

Note: Errata or addendums will be noted in the footer of each documents. e.g. [E1A0] would mean that there is one errata published to the original document.

Simulation Manuals

WINDOW6/THERM6 Version

WINDOW5/THERM5 Version

CPD 2.0

Visit the CPD Info page to download manuals, upload spreadsheets, issue and request forms, and FAQs.

2010 Interpretations

Technical Bulletins

 

Supporting

2001/2004 Interpretations (Not Current)

 


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12/2/2014 » 12/4/2014
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