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This content is part of the Essential Guide: Building with modern data center design in mind
Definition

computer room air handler (CRAH)

A computer room air handler (CRAH) is a device used frequently in data centers to deal with the heat produced by equipment. Unlike a computer room air conditioning (CRAC) unit that uses mechanical refrigeration to cool the air introduced to a data center, a CRAH uses fans, cooling coils and a water-chiller system to remove heat.

This was last updated in May 2012

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