RDHX The Breakthrough Liquid Cooling Retrofit Solution for AI-Powered Data Centers

Zero Downtime, 30-Second Fan Swaps, 281mm Wide: nVent's RDHX Makes Liquid Cooling Retrofit Painless

nVent's Stefan Djuranec promotes Rear Door Heat Exchangers (RDHX) as a cost-effective, low-risk retrofit for AI data centers. Replacing rear panels with liquid cooling coils and a water-glycol medium, RDHX captures exhaust heat, avoiding the long ductwork energy losses of CRAC/CRAH systems. At just 281mm wide with active and passive versions, it supports zero-downtime live installation and tool-free 30-second fan replacement. Built-in sensors enable remote intelligent monitoring and waste heat recovery for district heating. As a transitional technology, RDHX offers a flexible path to AI cooling. EXTRCOOL offers dual-mode CDUs, manifold assemblies, cold plates, rear-door heat exchangers, dry coolers and containerized systems.

More information

Details

Area 51, NV, USA

EXTRCOOL INDUSTRY LIMITED

Associated Trend items

The CDU, the Heart and Brain Liquid Cooling Cannot Do Without

Silent When Healthy, Fatal When Failing: The Five Selection Questions That Decide Whether the CDU Holds the Loop Together

The CDU plays the role the heart plays: it produces no cold, but without it the coolant never moves. Its heart role pumps and distributes via the manifold, while its brain role senses and controls. Selection answers five questions: total flow above all cold plate minimums, head above maximum loop resistance, exchanger capacity above peak load with fouling margin, redunda...

More information

The Manifold That Decides Where the Coolant Goes

From CDU to Cold Plate and Back: How the Manifold's Flow Distribution, Not Total Flow, Decides Precision Cooling

Rising AI GPU power is moving liquid cooling from whether it can cool to cooling precisely, and the manifold decides whether coolant reaches every position as it should. It distributes coolant through main channels to parallel branches and collects the heated return, following CDU to supply manifold to cold plate to return manifold to CDU. Poor design lets near-end branc...

More information

How a Liquid Cooling Manifold Gets Made, from Material to Final Acceptance

316L to Helium Testing: The Four Links—Material, Machining, Cleanliness and Verification—That Decide Manifold Quality

Manifold manufacturing starts with material, and 316L is the safer default, with coolant compatibility outweighing thermal conductivity. CNC machining forms main channels, branches and interface holes, where holding channel positions matters more than drilling; one-piece machining avoids weld deformation, while tube and plate assemblies add laser, TIG or brazing. Deburri...

More information

Products associated

water cooling system

finned tube heat exchanger

RDHX

Compare

Remove all

Compare up to 10 products