Temperature sensors and BMS dashboards provide useful data, but they rarely show how cooling is actually performing across an entire data hall. This guide explains how operators verify cooling performance in live facilities using rack-level measurements, thermal surveys, airflow visualization, and resiliency testing. By understanding Delta-T patterns and airflow behavior, teams can uncover hidden hot spots, airflow imbalances, and cooling constraints before they impact uptime.

This Thanksgiving, Purkay Labs gives thanks for the data center systems and people that keep things cool, efficient, and running 24/7.

This Halloween, Purkay Labs busts five cooling and airflow myths that still haunt data centers — and shows how to keep your facility truly chill.

f you’re thinking about adding or retrofitting cooling units, recent tariff increases could hit you in two ways—your budget and your timeline. Some replacements are unavoidable. If a system is at end-of-life or no longer supported, you have no choice. But if you’re upgrading because of higher rack densities or AI workloads, you could have more capacity than you think. Before you commit to new equipment, it’s worth checking what your current system can actually deliver.

At this year’s 7x24 Exchange in Orlando, one thing was clear: the data center industry is being pushed to its limits. Between 500kW racks, liquid cooling pilots, and BYOP (Bring Your Own Power) strategies, operators are navigating a rapidly evolving environment.

 With the rise of AI and the construction of high-wattage data centers, airflow management has become a critical concern—not just in the white space, but also in supporting infrastructure such as PDU rooms, UPS rooms, and battery rooms. This article highlights the importance of airflow management in these auxiliary spaces and outlines steps to take when overheating conditions arise.

As AI workloads surge, the power—and heat—inside every rack is growing fast. Here’s what that means for your facility, and how to get ahead of the cooling curve.

This article explores how measuring and optimizing Delta-T across CRAC and CRAH units can improve data center cooling efficiency, reduce energy costs, and enhance airflow management.

Don’t allow recirculated air take down your Chillers. This week on Keep Your Cool, we will be exploring how recirculated air can significantly impact chiller efficiency and overall operational costs.