Effective Strategies for Dealing with Ducts in Unconditioned Spaces
A version of this article appears in the May/June 2014 issue of Home Energy Magazine.
May 01, 2014
Ductwork installed in unconditioned spaces—such as attics, crawl spaces, and garages—can contribute significantly to the overall heating and cooling costs of residential buildings. Estimated duct thermal losses for single-family homes with ductwork installed in unconditioned spaces can range from 10% to 45% of total heating and cooling loads. In other words, poorly installed duct systems can account for almost half of the total heating and cooling costs of some residential buildings.
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