What is Rear-door heat exchangers?
Rear-door heat exchangers increase rack cooling capacity without changing processor packaging. Passive doors rely on server fans; active doors add fans to manage airflow and higher loads.
Cooling technology • Technology
Rear-door heat exchangers
A liquid-fed heat exchanger replaces or attaches to the rear rack door and captures heat from server exhaust.
RDHxretrofitrackliquid loop
MaturityEstablished
Cooling mediumFacility water or a secondary water loop
Typical applicationCommonly applied to 30–100+ kW racks
Architecture
How heat moves
Rear-door heat exchangers increase rack cooling capacity without changing processor packaging. Passive doors rely on server fans; active doors add fans to manage airflow and higher loads.
01Components
02server air
03rear door coil
04facility loop
Why teams choose it
- Works with standard air-cooled servers
- Can be phased rack by rack
- Captures heat near the source and reduces room cooling load
What to validate
- Rack weight, door swing, hoses, and aisle access need coordination
- Server fans still consume power
- Condensation control depends on supply-water temperature
Connected records
Companies in this category
Company
Motivair
A thermal-management specialist focused on liquid cooling for supercomputing, HPC, and accelerated-computing facilities.
Buffalo, New York, United States
Company
nVent
An electrical connection and protection company with rack, enclosure, rear-door, and liquid-distribution products for data centers.
London, United Kingdom
Company
STULZ
A mission-critical cooling manufacturer offering precision air systems, chillers, rear-door units, and liquid-cooling infrastructure.
Hamburg, Germany
Company
Rittal
An enclosure and infrastructure company supplying racks, liquid-cooling packages, chillers, and monitoring for IT environments.
Herborn, Germany
Connected records
Required equipment
Equipment category
Rear-door heat exchangers
Rack-mounted coils that remove heat from server exhaust using a facility or secondary liquid loop.
4 tracked suppliers
Equipment category
Cooling pumps
Pumps circulate facility water, technology coolant, glycol, or dielectric fluids through the thermal chain.
3 tracked suppliers
Equipment category
Heat exchangers
Plate, coil, and shell heat exchangers isolate loops and transfer thermal energy across the cooling chain.
4 tracked suppliers
Evidence ledger
Primary sources
Profiles distinguish company-reported claims from confirmed operating data. Open the original materials before relying on a specification.
- 01
Direct answers
Frequently asked questions
Concise answers generated from the structured record and its cited evidence.
Where is Rear-door heat exchangers typically used?
Rear-door heat exchangers is classified as established technology. Commonly applied to 30–100+ kW racks.
What are the main advantages of Rear-door heat exchangers?
Works with standard air-cooled servers; Can be phased rack by rack; Captures heat near the source and reduces room cooling load.