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ANSI/ASHRAE 90.4-2019

Energy Standard for Data Centers

Establishes the minimum energy efficiency requirements of data centers for a) design, construction, and a plan for operation and maintenance; and b) use of on-site or off-site renewable energy resources. This standard applies to a) new data centers, or portions thereof, and their systems; b) new additions to data centers, or portions thereof, and their systems; and c) modifications to systems and equipment in existing data centers or portions thereof. Dual units of measurement.

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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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