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Trane's LiquidStack CDU 2.X can remove up to 2.5MW of heat from AI servers and is built for several chip platforms, including Nvidia Vera Rubin. Ships Q2 2027.
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Pumps and heat exchangers feeding liquid-cooled racks.
Illustration (AI-generated)
Trane Technologies has released the LiquidStack CDU 2.X, a coolant distribution unit rated to remove up to 2.5MW of heat. It launched the product at the Yotta 2026 event. Pre-orders are open, and shipments begin in the second quarter of 2027.
A CDU, or coolant distribution unit, is the pump-and-heat-exchanger box that moves liquid coolant to hot AI servers and carries their heat to the building's water system. Liquid cooling is replacing fans as AI chips run hotter.
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
Trane says CDU 2.X can remove up to 2.5MW of heat. It moves up to 3,750 litres of coolant a minute at 3.5 bar of pressure. That is enough for today's chips, with room for denser racks later.
Data centers order cooling years before they know which chips will arrive. Each new chip generation needs more coolant flow. Trane pitches CDU 2.X as one design that fits several current and future AI chip platforms, including Nvidia Vera Rubin.
"Operators need cooling infrastructure that can adapt as GPU platforms and rack densities evolve," said Scott Smith, general manager of LiquidStack at Trane.
Buyers can choose valves, power feeds and backup setups, including two separate power supplies or an automatic switch between them. The unit can sit at the end of a row of racks or right beside them. It works with building water up to 45°C.
It also uses a low-distortion motor drive. Trane's data sheet says this meets the IEEE 519 power quality standard without extra filters, keeping electrical noise sent back into the building's supply under 5%.
The launch follows LiquidStack's larger GigaModular CDU, now on sale with up to 14MW of capacity. Trane has not shared prices, customers or independent test data. Its claim to suit chips not yet shipping can only be tested once they arrive.
