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Rear Door Heat Exchangers
Cool the rack at the rack.
Rear-door heat exchangers (RDHx) attach directly to the back of the rack — capturing heat at source and removing it before it ever enters the room.
At a glance
| Specification | Value |
|---|---|
| Capacity | Up to 75kW / rack |
| Type | Active / passive |
| Coolant | Chilled water / refrigerant |
| Mount | Rear-door |
- UK WarehousedSame-week dispatch
- In-house engineersTechnical specs & support
- End-to-end BOM fulfilmentKitted, staged, delivered
- 120+ network buildersTrust Altnets to deliver
Key features
Built for how it gets installed.
Rear Door Heat Exchangers is one of the 3 cable types we carry across our Cooling range — chosen for the way you actually deploy.
Up to 75kW per rack
Active and passive variants
Chilled water or refrigerant
Retrofit-friendly
Why Altnets
The clever choice for network builders.
Deep UK stock
300,000+ sqft of warehousing and 4,000+ pallet positions — same-week dispatch on most line items.
Engineers, not order-takers
In-house technical team to validate specs, propose alternatives and de-risk your build before it ships.
BOM, kitted & staged
Multi-vendor consolidation, phased deliveries and project staging built into every order.
UK & worldwide reach
Air, sea and road freight with full export documentation and flexible incoterms for global rollouts.
Applications
Where rear door heat exchangers earns its keep.
High-density compute
AI / GPU clusters
Hyperscale halls
Retrofit projects
Have a question?
Let's get your network moving.
Tell us what you're building. We'll come back with a quote, lead times, and a plan.
- sales@altnets.co.uk
- +44 (0) 20 3997 8994
- Brighton · United Kingdom
