RESNET Clarifies Two of Its Standards

Two interpretations were recently issued by RESNET, which are aimed at providing clarification on two different standards.

The first clarifies how QADs must conduct field QA. The interpretation provides specific guidance for what “independently confirmed’ means in order to promote consistency of QA inspections.

RESNET Standard Development Committee 900 determined that “the QAD must confirm the geometric features and visually inspect the minimum rated features themselves and must complete necessary performance testing separately themselves or closely observe another qualified individual (such as the rater or RFI) performing the testing”.

If the observation option is selected by the QAD, there is a 16-part checklist that has to be completed during the testing process. This was the first time in three years that an interpretation had been issued on the MINHERS.

The other interpretation clarifies what ICC-380 considers “continuously operating” whole house mechanical ventilation systems as it applies to the set up for testing.

RESNET Standard Development Committee 300 resolved that “the term ‘continuously operating’ (as it is used in RESNET/ICC 380-2016) shall be defined as a ventilation fan designed to operate 100% of the time or 24/7. Ventilation systems that automatically turn the fan on or off (for example: timer, moisture/temperature sensor) shall not be considered continuously operating and their non-dampered openings shall not be sealed during testing”.

Further guidance on this issue already existed in Sections and This interpretation was approved in mid-April and went into effect in mid-May.

In mid-April, the RESNET Board also adopted more clearly defined disciplinary actions for ratings providers. Infractions that may trigger an on-site disciplinary review of a QA Provider by RESNET include, but are not limited to: Failure to satisfy the terms of Probation; failure to satisfy the terms of a Corrective Action Plan; and multiple Probations within a 12-month period. The full details of the new policy can be reviewed in Part 2 of this document.

Finally, RESNET updated its policy on conflicts of interest. The 13-page policy can be found here.