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  1. CRAH Unit, Computer Room Air Handler | Trane Commercial HVAC

    A Computer Room Air Handler (CRAH) is a cooling unit used to regulate the temperature and ensure optimal operating conditions for IT equipment. CRAH units are essential for cooling …

  2. What is CRAC? CRAC vs. CRAH Unit Differences - TechTarget

    Jun 10, 2025 · Computer room air handler (CRAH) units are another data center cooling device. The main difference between CRAH and CRAC units is how they cool their surrounding …

  3. CRAC vs CRAH | Best Cooling for Hyperscale Data Centers

    CRAH units use chilled water supplied by a centralized cooling plant to condition the air. Instead of refrigerant, they rely on water-to-air heat exchangers and fans to move large volumes of air …

  4. What Is The Difference Between CRAC & CRAH Units? DataSpan

    Dec 10, 2021 · The main difference between CRAC and CRAH cooling units is that CRAC units use refrigerants and compressors, whereas CRAH units use chilled water and control valves.

  5. CRAH Units - Koch Applied

    Computer room air handlers (CRAH) units are specialized cooling systems designed for data centers and other mission-critical environments where maintaining optimal temperatures is …

  6. CRAH (Cold Wall AHU) – Data Center Cooling | Johnson Controls

    Johnson Controls HVAC Equipment Air Handling Units CRAH (Cold Wall AHU) – Data Center Cooling

  7. CRAC Unit Vs CRAH Unit | What's The Difference ...

    Aug 13, 2023 · A CRAC Unit transfers the heat from the system and ejects by only using the Refrigerant Cycle, whereas a CRAH Unit utilizes Chilled Water, the Refrigerant Cycle, and …

  8. Chilled Water Computer Room Air Handler | CRAH - Nortek Data …

    Designed for high-density load areas, the Nortek Computer Air Handler (CRAH) delivers high cooling capacity in a compact footprint. Utilizing industry-leading fan technology and robust …

  9. The Importance of CRAHs and Cooling in Data Centers - ATI Solutions, Inc.

    A computer room air handler (CRAH) differs from a CRAC unit because the air is cooled over a cooling coil filled with chilled water instead of using mechanical refrigeration.

  10. computer room air handler (CRAH) - TechTarget

    Feb 17, 2022 · A computer room air handler, or CRAH, is a key part of an energy-efficient data center. Learn how they work and differ from an air conditioning unit.