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On November 2, 2026, Christopher Tozzi published an analysis discussing the difficulties and applicable scenarios of liquid cooling retrofits for data centers. He pointed out that liquid cooling retrofits can increase rack density and cooling efficiency, but are limited by space, load-bearing capacity, downtime, and infrastructure, making them suitable only for some scenarios; AI high-density racks can exceed 3,000 pounds when fully loaded, and older data centers with raised floors often need reinforcement or redesign. A more feasible approach is to deploy liquid cooling locally only for the highest-density racks, or to use it in single-tenant data centers, water-scarce regions, and scenarios that replace new capacity.
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Liquid Cooling Retrofits: Difficult, but Sometimes WorthwhileDevelopments
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Christopher Tozzi discusses the challenges and applicable scenarios of liquid cooling retrofits
Source:Data Center Knowledge
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Nov 3
Data Center Knowledge
Liquid Cooling Retrofits: Difficult, but Sometimes Worthwhile
Retrofitting data centers for liquid cooling can improve rack density and cooling efficiency, but it is constrained by space, load-bearing capacity, downtime, and infrastructure limitations, making it suitable only for some scenarios. Fully loaded AI high-density racks can exceed 3,000 pounds, and older facilities with raised floors often require reinforcement or redesign. A more feasible approach is to deploy liquid cooling locally only for the highest-density racks, or to use it in single-tenant facilities, water-scarce regions, and scenarios that replace new capacity.