The Science of Air Flow in Flex Duct

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A Texas A&M study shows how much of a hit you take when you let flex duct sag

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Sagging flex duct is bad for air flow. We all know it. We all talk about it. It turns out there’s research data to prove it, too. Texas A&M did a study a few years ago to look at the pressure drop that occurs for different levels of compression. If you’re not familiar with this study, the results may astound you.

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[source: http://www.greenbuildingadvisor.com/articles/dept/building-science/science-air-flow-flex-duct]

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