
Concerning duct testing in crawlspaces (this is for new houses for Energy Star, but will be the same for existing houses):I have a house on a conditioned crawl with ducts in that crawl. There is an exterior hatchway into the crawl, and no intentional connection between the house and the crawl. When performing a total duct leakage test, no problem, just open the hatch before the test. When perf…
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