In-Rack Coolant Distribution Unit


Improved Performance

Smart controls & sensors spike with peak demand for variable high performance.


Cost Effective

Integrated CDUs minimize or remove waste, maintenance costs and downtime for a lower total cost of ownership.


Highly Customizable

Modular CDU base designs are customized for maximum performance within unique customer device dimensions, configurations & performance specifications.

Optimized to Efficiently and Seamlessly Integrate into a High Power Device

In-Rack CDUs (Coolant Distribution Units) are optimized to efficiently and seamlessly integrate into a large, high power device like a data center server chassis or medical imaging equipment. In-Rack CDUs distribute coolant within large, high power devices to series of heat sources, either servers, processors, or other high heat sub-systems. Integrate this server rack cooling with cold plates custom designed to maximize interface with heat sources through machined custom geometries and skylines for maximum heat transfer to the liquid cooling system. In-Rack CDUs are configured in standard 4U cloud data center server configurations or common dimensions across standard medical and industrial models. They enable greater power and compute density in the same design footprint when replacing traditional air cooling systems, unlocking higher performance levels, greater reliability, and safer operation.


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How to Cool a Data Center? Liquid Cooling System Solutions

Designed for Maximum Performance

Server rack cooling is easy to use with installation instructions as simple as completing the liquid loop, filling the liquid reservoir tank, and flipping the switch. These systems offer a fast option for upgrading to liquid cooling in a cost effective and reliable package and can be fully self-contained or integrated into available facility cooling systems.

Boyd’s advantage is having a cohesive, overlapping thermal technology portfolio that enables liquid, immersion, two-phase and air cooling technologies to co-exist. We design modular CDU bases intended to be customized and fine-tuned to precise customer performance needs, pulling the best from our vast innovative technologies for each custom application. You won’t have to adjust your device design to accommodate a standard CDU, we’ll customize your CDU design for maximum performance within your unique application.

Standard Boyd Cooling Distribution Units

System Type Nominal Cooling Capacity Standard Process Temp. Temperature Stability Ambient Temperature Range Dimensions (W x D x H) Typical Industry Datasheet 
2U CDU Liquid to Liquid 15 kw 25° to 50°C
(77° to 122°F) 
+/- 1 °C 5°C to 45°C 
(41° to 113°F) 
483 x 794 x 85.5mm
(19.02 x 31.26 x 3.37in) 
Enterprise 2U L2L CDU Datasheet
4U CDU Liquid to Liquid 60 kW 25° to 50°C
(77° to 122°F) 
+/- 1.5 °C 5°C to 45°C 
(41° to 113°F) 
450 x 982 x 175mm
(17.72 x 38.66 x 6.89in) 
Enterprise 4U L2L CDU Datasheet
10U CDU Liquid to Air 32 kW 25° to 50°C
(77° to 122°F) 
+/- 1 °C 10° to 45°C
(50° to 113°F) 
535 x 982 x 440mm
(21.06 x 38.66 x 17.32in) 
Enterprise 10U L2A CDU Datasheet 
In-Row CDU Liquid to Liquid 305 kW 20° to 41°C 
(68° to 106°F) 
+/- 2 °C 5°C to 45°C 
(41° to 113°F) 
600 x 1000 x 1885mm
(23.6 x 39.4 x 74.2in) 
Enterprise In-Row L2L CDU Datasheet 
MCS20 – Stand Alone Liquid to Air 1.3 kW  55°C
    439 x 384 x 338mm
(17.3 x 15.1 x 13.3in) 
Industrial  MCS20 Datasheet
MCS30 – Stand Alone Liquid to Air 2.1 kW   55°C
     439 x 384 x 338mm 
(17.3 x 15.1 x 13.3in) 
Industrial MCS30 Datasheet
MCS40 – Stand Alone Liquid to Air 2.4 kW  55°C
  5°C to 40°C
(41° to 104°F) 
381 x 381 x 610mm 
(15 x 15 x 24in) 
Industrial MCS40 Datasheet
MCS50 – Stand Alone Liquid to Air 3.5 kW 10°C to 60°C
(50°F to 140°F)
5°C to 40°C
(41° to 104°F) 
381 x 381 x 610mm
(15 x 15 x 24in) 
Industrial MCS50 Datasheet
LCS20 Liquid to Liquid 20 kW 10°C to 35°C +/- 0.5 °C 5°C to 40°C
(41°F to 104°F) 
543 x 705 x 810mm 
(21.4 x 27.8 x 31.9in) 
Industrial LCS20 Datasheet 

Key Industries

Cloud Compute

  • Edge Computing Center Cooling Systems
  • Cloud Data Center Servers & Chassis
  • Read More…


  • Power Supply Cooling
  • Power Conversion Cooling
  • Process Automation Systems
  • Security Screening
  • Read More…


  • Sample Test Equipment Cooling Systems
  • Diagnostic Systems
  • Medical Lasers
  • MRI
  • Read More…

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