A perfect storm is brewing in the data center industry: the rise of AI, massive surges in global data usage, and mounting pressure to reduce energy and water consumption.
In 2023 alone, over 1201 zettabytes of data were generated worldwide1, a figure set to rise sharply as AI and machine learning become foundational to business and society. To meet this surge in demand, data centers are compelled to evolve rapidly, densifying racks and increasing power requirements. Today rack power regularly exceeds 30kW, and traditional air cooling systems are struggling to keep up.
That’s why liquid cooling is emerging as the new standard in modern data centers. It offers up to 15% better total usage effectiveness (TUE) and allows more precise control over energy consumption and thermal output2. This article explores the broader shift toward liquid cooling in data centers, why it’s becoming essential, how it compares with traditional air cooling, and what to consider when evaluating the right strategy for your setup.
Choosing the right data center cooling strategy?
Global electricity consumption from data centers is projected to nearly triple by 20303. This level of demand is pushing energy and cooling infrastructure to new limits.
Cooling accounts for up to 38% of total energy usage in some data center environments. As systems densify and scale, the need for targeted cooling approaches, like direct-to-chip cooling and immersion cooling, becomes critical.
Read our related article to explore direct-to-chip cooling, immersion cooling, and what to watch for when designing liquid cooling systems - before you commit.
Liquid cooling has emerged as one of the most effective responses. It not only delivers improved thermal transfer but also supports water efficiency and enables smarter system control. As demands intensify, the ability to adapt cooling to specific conditions and workloads is what will define success.
Air cooling vs. liquid cooling in data centers
For many years, air cooling was the go-to method for managing temperature in data centers. It's familiar, relatively simple to install, and cost-effective in low-density environments. But its limitations are becoming harder to ignore, especially when dealing with the thermal loads of AI and high-performance computing.
Air cooling systems can struggle to maintain optimal performance above 15–20kW per rack. As densities rise, energy consumption spikes and heat management becomes increasingly inefficient. In contrast, liquid cooling data center solutions such as direct liquid cooling and immersion cooling offer far greater thermal transfer capacity.
These liquid cooling technologies enable data centers to keep pace with rising demand while lowering both energy and water usage. With greater control, operators can tailor systems to fluctuating workloads, helping to reduce operational costs and environmental impact.
The future of energy efficiency in data center cooling solutions
Energy efficiency remains the key driver in selecting data center cooling solutions. With grid capacity under pressure and sustainability targets becoming more ambitious, it’s clear that cooling strategies must evolve beyond simply maintaining uptime.
Direct-to-chip cooling and immersion systems offer operators new ways to optimize energy use—often delivering significant savings when combined with smart pump systems and closed-loop designs. These approaches are also helping to address another critical challenge: water usage.
Data centers have long faced scrutiny over their water consumption, with some requiring millions of liters per day for evaporative cooling processes. By contrast, liquid cooling solutions can significantly reduce water usage through intelligent circulation and heat exchange.
Why data center cooling optimization needs specialist insight
The direction is clear: efficient cooling is essential to match server performance—but selecting the right system is complex. While both air and liquid cooling have roles, hybrid models are gaining traction.
Success depends on deep technical insight: understanding rack densities, fluid compatibility, pump efficiency, control systems, and future scalability. That’s why expert collaboration in fluid handling and system design is vital—not just to install cooling, but to build long-term strategies for performance, resilience, and sustainability.
Top 8 benefits of our state-of-the-art technology for optimizing cooling solutions in data centers
With state-of-the-art technology, Grundfos can help you and your customers future-proof business while reducing complexity across the value chain. Tap into technical expertise and dedicated support every step of the way – and take advantage of 8 benefits tailored to data centers cooling applications. Click on each benefit below to learn more about the value we can offer you and your customers.
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