Are municipalities requiring blower‑door tests on major renovations; what targets are pass/fail locally?
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Energy codes, like IECC, mean big renovations or additions often need a blower-door test for the final inspection. Passing scores depend on the location, many aim for 3–5 ACH50 in existing homes. Some places just want the test done and recorded. But, they’ll probably call you out if your house is super leaky.
Municipalities are increasingly requiring blower-door tests for major renovations to ensure energy efficiency and airtightness in buildings.