David Weitz

David Weitz is director of the Applied Building Science Division of Conservation Services Group, headquartered in Westborough, Massachusetts. The Division develops standards, protocols, and quality assurance procedures for CSG, which over the past 25 years has performed energy evaluations and improvements in over one million homes throughout the United States.

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The International Energy Conservation Code 2009

Author: David Weitz
March 01, 2010

Three groundbreaking changes to the residential requirements of the 2009 IECC include introducing specific performance criteria for envelope leakage, duct leakage, and lighting requirements into the residential code. [continue reading]

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