In the most recent Thermal Guidelines for Data Processing Environments, ASHRAE provides a recommended range of 64-81°F or 18-27°C and an allowable range of 59-90°F or 15-32°C. . This work was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors or their employees, makes any warranty, express or implied, or. . erence calls, writing drafts, drawing figures, and editing and reviewing text. Thanks also to Jon Fit the white paper and for his leadership of the ASHRAE TC9. Special thanks also to Dave Kelley (Emerson), Paul Artman (Lenovo), John Groenewold (Chase), William Brodsky (IBM). . While this document is believed to contain correct information, neither the United States Government nor any agency thereof, nor The Regents of the University of California, nor any of their employees, makes any warranty, express or implied, or assumes any legal responsibility for the accuracy. . CHOOSING THE RIGHT CONTRACT FORM: D&B OR EPC? Given the specialist nature of data centers, data center owners and investors commissioning data centers typically look to employ a contractor with data center engineering expertise to act as a single point of responsibility to deliver both the design. . What Is the Optimal Temperature for a Server Rack? What Are Industry Standards for Data Center Cooling? ASHRAE's Thermal Guidelines for Data Processing Environments define classes (A1-A4) for hardware tolerance, with A1/A2 supporting 64°F–81°F (18°C–27°C). The American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) offers the most widely accepted guidelines for data centers.
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