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Data Center Technologies

CDU for Data Centers

Coolant distribution units (CDUs) form the critical interface between facility cooling and server-side liquid loops, maintaining stable temperatures, controlled flow, and continuous uptime for liquid-cooled IT.

Talk to Munters cooling engineers to validate your data center CDU architecture and integration approach.

Munters LCX (liquid-to-liquid) coolant distribution unit.

A Complete Cooling Ecosystem

The system-level approach enables complete thermal management across traditional, hybrid, and fully liquid-cooled architectures, supporting densities from enterprise racks to AI factories and large-scale training clusters.

See how CDUs fit into complete data center cooling systems across chillers, airflow, liquid cooling and heat rejection.

Munters offers a complete cooling architecture that integrates:

  • Air- and water-cooled chillers
  • Dry coolers and free-cooling modules
  • CRAH and fan wall integration for hybrid air-and liquid environments
  • Direct-to-chip liquid-cooling loops
  • Advanced control systems and engineering expertise
  • LCE CDUs for specialized liquid-to-refrigerant SyCool deployments

LCX – Liquid-to-Liquid CDU for Data Center Liquid Cooling

The LCX is a modular, scalable and highly adaptable liquid-to-liquid CDU engineered for high-density AI factories and HPC environments. It delivers effecient heat transfer and precise control, bridging the gap between facility infrastructure and server-side liquid loops.

Key charicteristics include:

  • Liquid-to-liquid heat exchange for high transfer efficiency 

  • Modular design for expansion and flexible deployment 

  • Designed for direct-to-chip and high-density liquid cooling architectures

  • Pairs seamlessly with chillers, dry coolers and free-cooling systems

  • Upgrade path from air cooling to liquid cooling for existing facilities

Designed for Reliable Operation at Scale

LCX CDUs are built for real-world data center environments, combining scalability, predictable performance and long-term serviceability. From high-density AI clusters to phased facility expansions, the platform supports continuous uptime across the entire cooling lifecycle.

  • Scalability and redundancy for mission-critical cooling

    The LCX platform is engineered for the availability levels required in modern data centers. This enables operators to deploy liquid cooling at scale without compromising reliability. It supports:

    • N+1 and N+N redundancy configurations
    • Parallel CDU deployments for high-density and AI zones
    • Field-expandable modules for phased growth
    • Failover functionality and hot-swappable components
    • Modular configurations to support phased expansion and future growth
    Munters LCX (liquid-to-liquid) coolant distribution unit
  • Performance and operating envelopes

    Munters CDUs are designed to maintain stable thermal performance across a wide range of operating conditions, supporting both rack-level and room-level liquid-cooling deployments. Typical capabilities include:

    • High flow rates for rack-level and zone-level cooling
    • Wide delta-T ranges for flexible system design
    • Stable operation across broad coolant temperature brands
    • Pressure ratings suitable for complex liquid-cooling circuits
    • Compatible with water, water-glycol, and dielectric fluids
    LCX liquid-to-liquid Coolant Distribution Units
Product page screenshot for Munters SyCool LCE

Munters SyCool LCE – Refrigerant-Based Liquid Cooling 

For water-free or refrigerant-based cooling strategies, Munters offers SyCool LCE, a liquid-to-refrigerant CDU designed for thermosiphon architectures. 

  • Completely water-free operation
  • High efficiency and low maintenance through thermosyphon technology
  • Compatibility with refrigerant-based racks and and next-generation direct-to-chip systems
  • A conversion path from air cooling to liquid cooling in SyCool deployments 
Two engineers in high-visibility vests in a Munters manufacturing facility.

Service and Support for Mission-Critical Uptime

As the original equipment manufacturer, Munters designs, builds, and services data center cooling systems – ensuring uptime, performance, and long-term reliability.

Our engineering-led service approach supports system performance and reliability across the full lifecycle, from commissioning to optimization and upgrades.

  • Commissioning and validation
  • Preventive and predictive maintenance
  • Access to genuine OEM spare parts
  • System upgrades and retrofit solutions

What Coolant Distribution Units (CDUs) Are and How They Work

A coolant distribution unit (CDU) transfers heat from server-side liquid cooling loops to the facility cooling system supplied by chillers or dry coolers. It forms the interface between IT equipment and the plant-side heat rejection infrastructure. In modern AI and HPC environments, where thermal loads fluctuate rapidly across training, fine-tuning and inference, the CDU maintains stable temperatures, controlled flow and continuous uptime.

A CDU maintains stable and reliable cooling through a controlled, closed-loop process:

  • 1.

    Warm coolant return – Warm coolant returns from the server-side loop, carrying heat from CPUs, GPUs and accelerators.

  • 2.

    Heat exchange – A liquid-to-liquid heat exchanger transfers this heat to the facility loop for rejection via chillers or dry coolers.

  • 3.

    Flow and control – Pumps, valves and sensors regulate flow, pressure and temperature to keep each loop within its operating envelope.

  • 4.

    Cooled supply – Cooled liquid is supplied back to the IT equipment, maintaining consistent thermal performance even under rapid load changes.

  • 5.

    Monitoring and redundancy – Advanced monitoring and redundant components maintain stability across varying delta-T conditions and high-density AI workloads.

FAQ – CDUs for Data Centers 

Ready to design your data center cooling system?

A smiling female engineer wearing safety glasses and a blue Munters winter jacket holding a cordless power drill, standing proudly in front of a Munters Fan Wall Unit (FWU) assembly.

Ready to Cool Smarter?
Let us show you how Munters’ modular and scalable liquid-to-liquid CDU delivers the adaptability and performance required for high-density AI factories and HPC environments.