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ANSI/ASHRAE/IESNA 90.1-2004 (IP Edition)

Energy Standard for Buildings Except Low-Rise Residential Buildings, I-P Edition

This standard provides: (a) minimum energy-efficient requirements for the design and construction of: 1. new buildings and their systems, 2. new portions of buildings and their systems, and 3. new systems and equipment in existing buildings and (b) criteria for determining compliance with these requirements.

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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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