Why data centers overspend 30% on cooling

Data centers are engineered to avoid failure at all costs. Uptime is king, redundancy is sacred, and cooling systems are often designed with one guiding principle: better safe than sorry.
The result? Safety margins stacked on top of assumptions, layered with outdated design rules-leading to massive and often invisible overspending.

Across the globe, data centers routinely spend up to 30% more than necessary on cooling, not because operators are careless, but because the industry has normalized inefficiency in the name of reliability. Oversized chillers, underloaded air-handling units, conservative control strategies, and poorly managed airflow have become standard practice rather than exceptions.

This book does not argue against reliability. It argues against waste disguised as reliability.

Drawing from decades of real-world HVAC and data center experience, this book exposes where cooling overspending truly comes from-design decisions, operational habits, control philosophies, and metrics that hide more than they reveal. More importantly, it shows how cooling costs can be reduced without increasing risk, compromising redundancy, or threatening uptime.

This is not a theoretical discussion. It is a practical guide for professionals who want data-driven, technically sound, and operationally safe ways to stop bleeding energy and money through their cooling systems.