How a European Data Center Achieved 15% PUE Reduction and Zero Unplanned Downtime with Absolute Zero Chillers
- Overview
- Recommended Products
Customer
CloudSpire Hosting, a premier colocation data center provider in Frankfurt, Germany.
The Challenge
CloudSpire’s aging cooling infrastructure was becoming a major liability. Their Power Usage Effectiveness (PUE), a key metric for data center efficiency, was stagnating at an uncompetitive 1.6. The legacy chillers were prone to unexpected failures, leading to two costly downtime incidents in the past year. They needed a modern, reliable, and highly efficient cooling solution that could scale with their growing client base and operate flawlessly in a high-stakes environment.
The Solution
After a comprehensive audit, the Absolute Zero engineering team proposed a phased replacement of CloudSpire’s existing chillers with four AZ-ACC 500kW Air-Cooled Chillers. The key factors in their decision were:
•Superior Energy Efficiency: The AZ-ACC series promised an EER of ≥ 3.2, which would directly impact their PUE.
•AI-Powered Predictive Maintenance: The integrated IoT Smart Monitoring platform offered the ability to move from a reactive to a proactive maintenance model, a critical requirement for ensuring uptime.
•Redundancy by Design: The dual-circuit, multi-compressor design of the chillers provided the N+1 redundancy they needed to guarantee continuous operation.
The Results
The project was completed over six months with zero interruption to data center operations. The results, one year after commissioning, have exceeded expectations:
•15% PUE Reduction: CloudSpire’s PUE dropped from 1.6 to an impressive 1.36, making them one of the most efficient facilities in the region.
•$120,000+ Annual Energy Savings: The dramatic improvement in efficiency translated directly to over €110,000 (approx. $120,000 USD) in annual electricity cost savings.
•100% Uptime: They have experienced zero unplanned downtime related to the cooling system since the installation.
•Proactive Maintenance in Action: The IoT platform has already generated three predictive alerts, allowing the facility team to replace a failing fan motor and a sensor during scheduled maintenance windows, preventing potential failures.
“Absolute Zero didn’t just sell us chillers; they delivered a complete reliability solution. The IoT platform is a game-changer. We no longer worry about our cooling system; we know it’s being monitored 24/7. The energy savings are fantastic, but the peace of mind is priceless.”— Dietrich Schmidt, Head of Facility Operations, CloudSpire Hosting
