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ANSI/ASHRAE/IESNA 100-2006

Energy Conservation in Existing Buildings

This standard applies to existing buildings, portions of buildings, and complexes, including the envelope and all energy systems in the building, except process systems.

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American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. [ASHRAE]


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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.

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