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Cooler Master has unveiled a 2,500kW in-row coolant distribution unit (CDU) for AI data centers, with mass production targeted for the fourth quarter of 2026.
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The Cooler Master 2,500kW in-row CDU, shown in the company's product-page photo.
Image: Cooler Master
Source · Press image from the Cooler Master newsroom, used for news reporting.
Cooler Master, a Taiwanese cooling company, has introduced a 2,500kW coolant distribution unit. It showed the unit at the Open Compute Project Global Summit in San Jose, held 12 to 15 October. Mass production is planned for the fourth quarter of 2026.
A CDU, or coolant distribution unit, pumps liquid coolant to AI servers and passes their heat to the building's water system. This one is "in-row", meaning it stands in a row of server racks.
A CDU passes rack heat from the coolant loop to the building's water loop.
VoltGridNews
Source · Original VoltGridNews explanatory diagram based on the cited source
The company says the unit pumps 990 gallons a minute and can manage 32 linked units from one place. It has two internal systems that share the load. Its product page lists building water from 2°C to 45°C and sensors that watch flow, pressure, water quality and leaks.
Cooler Master wants to supply everything a data center needs for liquid cooling. Its range includes CDUs from 150kW to 2,500kW and a 300kW unit already in production for halls that still mostly use air cooling. A 30kW model is due in Q4 2026.
It also sells cold plates, metal blocks that sit on chips and carry coolant, plus manifolds that split the flow across servers. A two-phase refrigerant demo, which cools by boiling a liquid, and tools for filling the cooling loops round out the range.
Chief executive Thomas Chen told Data Centre Magazine that AI is making cooling a strategic choice, not just an operational one.
Some numbers do not line up. Cooler Master's own press release lists the flagship as "2,500 MW" in one line, likely a typo for kW. The product page gives a 1,500 litres-a-minute maximum flow, which does not clearly match the 990 gallons figure. No customers or prices were announced, and the flagship is not yet in production.
