Testing Duct Testers
A version of this article appears in the July/August 2012 issue of Home Energy Magazine.
June 29, 2012
According to DOE’s Building America program data, typical residential ductwork efficiency is about 67%. That means that if you install a 90% efficient furnace, your system efficiency would be just over 60%. Another way to look at this is that ducts lose 25–40% of the energy that moves through them. Just from a practical standpoint it makes sense to improve the delivery system. Shorter, straighter, better engineered and installed ductwork will improve delivery efficiency.
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