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DataCenterPrep 02

Build hub · role track

Data Center HVAC & Mechanical Interview Prep

Mechanical trades on a data center build own the systems that remove the heat: chilled water, CRAC/CRAH units, containment, and increasingly direct-to-chip and rear-door liquid cooling. Interviewers want to see you understand why airflow and redundancy matter, not just how to install a unit.

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What the interview probes

Where this role is really tested

What a screen for this role actually probes, and where candidates lose it.

  • Chilled-water and DX cooling paths, and where redundancy lives in each.

  • Hot-aisle / cold-aisle containment and why bypass airflow is a problem.

  • Liquid cooling basics: direct-to-chip, rear-door, and immersion at a high level.

  • Commissioning support: how mechanical work gets verified before handover.

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