On March 15, 2013, the RESNET Board of Directors adopted an amendment of Sections 806 to 808 of RESNET’s CAZ and CO testing standards. The amendment is contained in Addendum 2 of the RESNET Mortgage Industry National Home Energy Rating Standards. The effective date for the amendment was May 15, 2014. Since the amendment was adopted the RESNET Board of Directors adopted a policy of not having a separate RESNET CAZ and CO standard but rather to refer to an existing ANSI standard. There is an amendment that would remove RESNET’s CAZ and CO standards from Chapter 8. The amendment would instead refer to the existing ANSI standard. The proposed amendment is currently in the process of public comment reconciliation by the RESNET Standards Development Committee (SDC) 300. On May 12, 2014, the RESNET Board voted to extend the implementation date of the Addendum 2 to August 15, 2014. This will allow the RESNET SDC 300 enough time to amend the RESNET standards regarding CAZ and CO from both the current Chapter 8 standard and the approved addendum to Chapter 8 In the meantime certified RESNET Home Energy Raters should continue to be guided by the current Sections 806 to 808 of Chapter 8 of the RESNET National Home Energy Rating Standards in undertaking RESNET CAZ and CO testing. The RESNET simulation CAZ and CO testing test is still based on the current un-amended Sections 806 – 808. The effective date of the standard amendment currently in the RESNET public comment reconciliation process will not take place until after the date of January 1, 2015, when all currently certified raters must complete the required CAZ and CO training and test requirements.