PERFORMANCE: Codes & Standards
Energy & Cost
Codes & Standards
Component Modeling Approach (CMA)
The Component Modeling Approach (CMA) is a certification method for fenestration energy ratings by the National Fenestration Rating Council (NFRC). It enables whole-product energy performance ratings for commercial (non-residential) fenestration. CMA uses online performance data for the three primary components of a fenestration product (glazing, frame, and spacer) to generate whole-product ratings for U-factor, solar heat gain coefficient and visible transmittance. This information is incorporated into a label certificate that can be used for energy code compliance purposes.
The CMA program and the CMA Software Tool (CMAST) address the following needs of commercial sector architects, fenestration industry and code officials:
Prior to CMA, NFRC certification for site-built fenestration was a challenge, requiring validation testing of whole product samples. The software-based CMA addresses this challenge and allows faster project creation from predefined and NFRC-approved glazing, frame and spacer options. From these components, whole products can be modeled to obtain project-specific label certificates.
CMA Basics for Stakeholders
How fenestration companies can participate in CMA:
How CMA can help code officials:
California's Title 24 Building Energy Efficiency Standard now requires CMA Label Certificates for site-built fenestration in large projects.