Scope of this Report is limited to rating system comparisons of:
? AAMA 1503 (CRF)
? NFRC 500 (CR)
? CSA A440.2 (I)
Exterior condensation is not covered within this document.
Since CRF, CR and I are optional ratings, manufacturers may choose not to have them reported.
The primary units of measure in this document are IP. If SI values are offered in parentheses they are for reference only.
This document was developed in an open and consensus process and is maintained by representative members of AAMA as advisory information.