Insights
Technical articles
and industry insights.
CRAC vs CRAH, DX vs CDW vs CHW comparisons, refrigerant guides, sensible heat load calculations, ASHRAE TC 9.9 set-point recommendations, and Australian Standards explainers.
Topology · 9 min read
CRAC vs CRAH: Complete Australian Buyer's Guide
CRAC and CRAH look the same from the outside but the cooling source is fundamentally different — and so is the cost, the efficiency, and the maintenance regime. Here's the buyer's guide that compares them honestly.
29 April 2026
Topology · 10 min read
DX vs CDW vs CHW Data Centre Cooling Compared
Direct expansion, condenser water, and chilled water are the three precision-cooling topologies you'll encounter in Australian data centres. Here's what differentiates them, where each wins, and how to size them.
26 April 2026
Compliance · 9 min read
Refrigerant Types in CRAC Systems Australia (R513A, R32, R134a, R410A)
The Australian HFC phase-down means CRAC refrigerant choices have changed substantially since 2020. Here's what each common refrigerant is, what equipment uses it, and what the regulatory trajectory looks like.
23 April 2026
Topology · 10 min read
Set-Point Recommendations for Data Centres (ASHRAE TC 9.9)
Operating your data hall at 22°C costs you 30% more cooling power than 25°C — for no reliability benefit. Here's the case for raising set-points to the warm end of ASHRAE TC 9.9.
20 April 2026
Sizing · 8 min read
How to Calculate Sensible Heat Load for Server Rooms
Heat load drives every CRAC sizing decision. Get this wrong and you either over-spend on cooling capacity or run hot under load. Here's the practical method our engineers use for Australian server rooms.
17 April 2026
Compliance · 8 min read
AS/NZS 3666 Cooling Tower Compliance for Data Centre Operators
Cooling towers serving data centre CDW and CHW plants are regulated under AS/NZS 3666 for Legionella control. Here's what data centre operators need to know.
14 April 2026
High-Density · 9 min read
In-Row vs Perimeter CRAC for High-Density Racks
Once rack density crosses 10 kW per cabinet, perimeter CRAC efficiency drops sharply. In-row cooling, rear-door heat exchangers, and direct-to-chip become the practical alternatives. Here's the decision tree.
11 April 2026
Maintenance · 9 min read
CRAC Spare Parts Guide: Liebert, Uniflair, Stulz
When a CRAC fault is racing the room temperature, the right spare part on the truck is the difference between recovery and a thermal incident. Here's our parts guide for the major Australian CRAC fleets.
7 April 2026