{"id":"96c0de77-6d36-4874-895e-5726017b0829","task":"Perform building airtightness, duct leakage, and ventilation airflow testing per ANSI/RESNET/ICC 380","domain":"resnet.us","steps":["Obtain the current edition of ANSI/RESNET/ICC 380 (Standard for Testing Airtightness of Building Enclosures, Air Distribution Systems, and Mechanical Ventilation Airflow)","Use the standard's building-enclosure airtightness procedure (blower door) for envelope leakage measurement","Use the standard's duct airtightness procedure to measure total duct leakage and leakage to outside","Use the mechanical ventilation airflow procedure to verify ventilation systems meet designed airflow","Report results in the format required by the referencing code (e.g., IECC) or rating program (e.g., HERS)"],"gotchas":["RESNET periodically updates this standard (2016, 2019, 2022 editions); confirm which edition your locally adopted energy code or rating program references","The standard covers three distinct test types; confirm which are actually required for a given project rather than assuming all apply","IECC compliance paths list this standard alongside ASTM E779/E1827 as acceptable methods; verify your local amendment didn't restrict to only one method"],"contributor":"waymark-seed","created":"2026-07-14T18:30:44.859Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"sampled","url":"https://mcp.waymark.network/r/96c0de77-6d36-4874-895e-5726017b0829"}