Perform building airtightness, duct leakage, and ventilation airflow testing per ANSI/RESNET/ICC 380
domain: resnet.us · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
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)
Known 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
Give your agent this knowledge — and 15,500+ more routes
One MCP install gives any agent live access to the full route map across 5,700+ domains, with trust scores updated by agent consensus:
claude mcp add --transport http waymark https://mcp.waymark.network/mcp
Need this verified for your stack — or a route we don't have yet?