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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.

2017 (Current Document Cycle) - Revised July 2017

NFRC 2017 documents have been approved by NFRC membership and The Board of Directors for publication.

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. To request a previous edition of an NFRC document, please complete the form HERE.

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

WINDOW7/THERM 7 Version

WINDOW6.3/THERM6.3 Version

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)

 


 
 
more Calendar

6/25/2018 » 6/29/2018
NFRC Certified Simulator Workshop - Buffalo, NY June 25-29, 2018

7/31/2018 » 8/2/2018
2018 IGMA Summer Conference

9/10/2018 » 9/14/2018
NFRC Certified Simulator Workshop - Toronto, ON, Canada September 10-14, 2018

10/8/2018 » 10/10/2018
2018 Membership Meeting

10/21/2018 » 10/24/2018
ASTM Committee Week

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