According to Renub Research, the global data center cooling market was $18.63 billion in 2025 and is projected to reach $54.34 billion by 2034, a compound annual growth rate of 12.63% across 2026 through 2034. The market is nearly tripling in nine years. Cooling represents up to 40% of data center energy costs, which means as the overall data center construction market grows, the cooling spend within it grows proportionally and then some, because AI workload density drives up the cooling-to-compute cost ratio compared to the previous generation of general-purpose infrastructure.
The growth drivers are structural, not cyclical. Cloud computing, AI inference and training workloads, and edge computing infrastructure all require more aggressive thermal management per unit of compute than the legacy enterprise server infrastructure they are replacing or augmenting. The thermal load per square foot of data center floor is climbing every year. Cooling systems that were specced for 10 kilowatts per rack are running adjacent to AI clusters pulling 80 to 130 kilowatts from the same facility power infrastructure. That mismatch forces cooling retrofits, hybrid deployments, and eventually full-facility thermal redesigns that each represent capital spend flowing into the cooling market.
The cooling market segments by solution type include air conditioning, chilling units, cooling towers, economizer systems, liquid cooling, and control systems. By cooling method: room-based, row-based, and rack-based approaches. The growth rate is not uniform across these segments. Direct-to-chip liquid cooling is growing at 26.5% annually, substantially faster than the overall market rate of 12.63%. Room-based air cooling, which handles the bulk of the installed global fleet, is growing slowly as the legacy base remains in place while new capacity shifts to liquid-cooled configurations. The net effect is a market where the headline CAGR understates the growth rate in the high-value liquid cooling segment while legacy air cooling infrastructure pulls the average down.
Major vendors including Vertiv, Schneider Electric, Emerson Electric, Fujitsu, and Asetek are all positioned across multiple segments, but the competitive differentiation is increasingly at the liquid cooling tier where the margin profile is better and the technical switching costs are higher. The vendors who built their position on CRAC units and air-side economizers are watching their core product category commoditize as new capacity shifts away from it. The $54.34 billion number by 2034 captures the full market. The vendors building toward the AI rack density tier are competing for the portion of that market growing at two to three times the headline rate.
Market sizing for data center cooling includes equipment sales but typically does not capture the full operational and retrofit cost picture. Facilities that committed to air-cooled infrastructure three to five years ago are now facing liquid cooling retrofit projects that involve replumbing mechanical rooms, installing CDUs, adding secondary coolant loops inside server chassis, and training facility staff. That retrofit work flows through HVAC contractors, mechanical engineers, and system integrators, not through the OEM equipment vendors the market sizing tracks. The real capital mobilizing around the thermal transition in existing facilities is larger than the equipment market numbers suggest. The 12.63% headline growth rate is the conservative end of the range for anyone supplying into the cooling transition.