Rating Standards & Compliance Flashcards
7 cards from real HERS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Rating Standards & Compliance flashcards as text
When performing duct leakage testing for a HERS rating, which metric represents total duct leakage to outside the conditioned space?
Answer: Duct leakage to outside (CFM25 out)
CFM25 out (duct leakage to outside) measures air escaping the duct system into unconditioned spaces, which directly affects HERS scoring.
A RESNET-certified rater discovers mid-inspection that insulation has been installed at a lower R-value than specified. What is the correct action?
Answer: Document the discrepancy, rate using the as-built value, and notify the Provider
Raters must document and use as-built conditions in the rating; discrepancies must be reported to the Rating Provider per RESNET quality assurance requirements.
Which RESNET standard addresses measurement of airtightness and ventilation airflows in residential buildings?
Answer: ANSI/RESNET/ICC 380
ANSI/RESNET/ICC 380 establishes standard test methods for airtightness and mechanical ventilation airflow measurement.
For a home rated under ENERGY STAR Certified Homes Version 3.2, what additional requirement beyond HERS Index applies?
Answer: All mandatory requirements in the ENERGY STAR checklist must be verified
ENERGY STAR requires both HERS Index compliance AND verification of all mandatory thermal enclosure, HVAC, and water management checklist items.
Under RESNET's quality assurance oversight, what percentage of a rater's confirmed ratings must be reviewed by the Rating Provider annually?
Answer: 10%
RESNET requires Rating Providers to conduct quality assurance reviews on a minimum of 10% of each rater's confirmed ratings annually.
Which condition allows a rater to use the 'worst-case' duct leakage value from a prior test on a repeated floor plan?
Answer: Sampling protocol approval from the Rating Provider
RESNET's sampling protocol, when approved by the Provider, allows repeated identical floor plans to use test results from a sampled representative unit.
The HERS Index scale is defined such that a score of 0 represents:
Answer: A home that produces as much energy as it consumes on an annual basis (net-zero)
A HERS Index of 0 represents a net-zero energy home that produces as much energy annually as it consumes.