STULZ Replacement CRAH

Replacement CRAH for Legacy Data Centers

Increase cooling capacity and achieve significant energy savings without redesigning your data center.

STULZ Replacement CRAHs are high capacity, direct drop-in, chilled water units with modern EC fans. They replace inefficient legacy units with belt-driven fans and provide instant energy savings and improved performance.

Replacement CRAHs Apply to:

  • Liebert FH 422C

  • Liebert FH 529C

  • Liebert FH 600C

  • Liebert FH 740C



  • No modification to existing piping mains, primary electric, or floorstand

  • STULZ V-Coil arrangement

  • Energy saving advantages of up to 40%, simply by replacing the CRAH

  • Additional energy savings of 50% and beyond can be achieved using advanced controls

  • Increased air volume at maximum fan speed

  • EC Fans operate at lower speeds, lower energy, even airflow

  • EC Fans consume less energy, therefore higher net cooling capacity

  • EC Fans provide optimized under-floor pressure and balanced airflow

  • Fast ROI; qualifies for utility rebates

  • Provides advanced communication and control capabilities

  • Lowers maintenance costs

  • Made in the USA

STULZ E2 Control and Monitoring

  • The E2 Controller will allow communication with all major BMS/BAS systems
  • Updated existing control options (under-floor pressure control; return or supply air temperature control; independent fan and valve control)

Learn More

  • Dave Meadows, Director of Technology

    "For existing data center owners who need to replace old, unreliable CRAHs quickly and efficiently, STULZ provides a low cost, highly efficient replacement."

Technical Data

Chilled Water
kW76 - 124
BTU/hr261,000 - 423,000
Tons21 - 35
CFM12,500 - 18,600

Savings estimate is derived from actual performance text results of (1) STULZ CCD-1805 CWE-LR vs. (1) Liebert model FH740C, at 16,500 cfm, against 0.3" of external static pressure. Results may vary.


Technical Data subject to change without notice.



Contact us

Sales for All Products Areas in United States

  • STULZ Air Technology Systems, Inc.

    STULZ Air Technology Systems, Inc.

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