This case study describes how a leading telecommunications provider in Singapore improved data center energy efficiency by retrofitting aging Computer Room Air Conditioning (CRAC) units. The organization faced high energy consumption, maintenance challenges, overcooling, and regulatory pressure from carbon tax policies. Vertiv delivered a CRAC retrofit service that replaced traditional fans with Electronically Commutated (EC) fans, enabling variable-speed operation and precise cooling control without requiring major system overhauls. The retrofit was implemented across two sites and resulted in dramatic cooling load reductions—up to 72%—with an average reduction of over 70%. The project achieved full return on investment in just three months while improving reliability, reducing costs, and

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