The global data center cooling market was valued at USD 26.3 billion in 2025 and is estimated at USD 31.4 billion in 2026. It is projected to reach USD 128.3 billion by 2033, growing at a CAGR of 22.3% from 2026 to 2033. AI, cloud computing, and high-performance workloads are packing more power into every rack, and cooling has moved from a background utility to a boardroom-level investment. Here is what is driving that shift, which technologies are winning, and who is competing for the opportunity.

Core Technologies Shaping the Market

From air to liquid

Data centers were once built around 2-6 kW per rack. Average densities now sit around 10-15 kW, and some hyperscale and HPC environments go beyond 20-50 kW. At those levels, conventional air cooling struggles on both efficiency and cost, so operators are turning to:

• Direct-to-chip cooling, which delivers coolant right to the hottest components
• Rear-door heat exchangers, which pull heat off at the rack
• Immersion cooling, which submerges hardware in a thermally conductive fluid
• Hybrid designs, which blend air and liquid to balance performance and budget

Liquid systems run quietly and fit into smaller footprints, but they cost more and carry leak risk, which remains a real barrier for some operators.

Air cooling is still the workhorse

Air conditioners led the solutions segment in 2025 because they are easy to integrate, cheaper upfront, and proven. Precision air conditioners are expected to grow strongly as GPUs and dense servers demand tighter temperature control.

Containment and layout strategies

Raised floors with hot or cold aisle containment led their segment in 2025 by preventing hot and cold air from mixing, which trims cooling costs. Raised floors without containment should keep growing too, since retrofitting older facilities is expensive. By structure, room-based cooling held over 47% share in 2025, while row-based cooling is gaining ground for its modular, add-as-you-grow approach.

Smarter, greener cooling

Cooling can consume a large share of a facility's energy, and operators face growing pressure to lower PUE and meet ESG goals. That is boosting interest in free cooling, evaporative and adiabatic systems, waste heat recovery, and AI-driven thermal optimization. ABB's partnership with OctaiPipe, announced in December 2025, targets cooling energy savings of up to 30% through AI-optimized controls. NREL is also exploring geothermal underground thermal energy storage to reduce cooling's energy burden.

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Market Valuation and Projections

Several forces support this growth outlook:

• Hyperscale and colocation expansion. Cloud providers and digital enterprises keep investing in large facilities that run at high utilization and must meet strict uptime commitments.
• Rising power density. AI, ML, HPC, and analytics workloads generate far more heat than traditional IT.
• Data growth. Connected IoT devices are estimated to reach around 21.1 billion by the end of 2025, adding to infrastructure demand.
• Sustainability pressure. Regulators, investors, and customers are pushing operators to cut emissions and energy use.

The main restraint is cost. Air systems need regular maintenance and expensive raised floors, while liquid systems require significant capital and careful leak management.

The main opportunity is eco-friendly, cost-effective cooling. Rules like the EU's F-Gas phase-out are steering the industry toward lower-impact technologies, and vendors that align with LEED, ESG, and carbon-reduction targets stand to win long-term contracts.

Segment leaders in 2025:

• Solutions accounted for 74.4% of revenue, while services are set for solid growth as systems become more complex.
• Installation and deployment led services, with maintenance expected to grow as operators outsource management.
• Telecom led applications with nearly 29% share, backed by 5G, IoT, and edge computing. Retail is expected to grow as e-commerce expands.

Regional and Competitive Landscape

Regional picture

Asia Pacific was the largest region in 2025 with a 36.9% share, fueled by digital transformation, rising internet penetration, and heavy capacity investment. Varied climates are driving demand for climate-adaptive cooling. China's government-backed data center clusters and Japan's need for disaster-resilient infrastructure are notable contributors.

North America held a 31.4% share, driven by hyperscale campuses built for cloud and generative AI. The U.S. is expected to grow at a 16.7% CAGR from 2026 to 2033, with hubs like Northern Virginia, Texas, Arizona, and the Midwest leading the build-out.

Europe is defined by tough sustainability mandates, with a focus on waste heat reuse, low-impact refrigerants, and circular economy principles. The UK's space and power limits around London are pushing higher densities and compact cooling, while Germany's growth ties to industrial digitalization and edge deployments.

Who is competing

The market is moderately concentrated. Established leaders such as Vertiv, Schneider Electric, STULZ, and Rittal dominate large deployments with broad portfolios, global service networks, and long-standing hyperscaler ties. Emerging players such as Asetek, Coolcentric, ABB, and Climaveneta are carving out niches in liquid, immersion, direct-to-chip, and modular cooling, competing on agility and speed. Other profiled names include Air Enterprises, Dell, Fujitsu, Hitachi, Johnson Controls, Mitsubishi Electric, Nortek Air Solutions, and NTT.

Recent moves to watch:

• May 2026: Johnson Controls unveiled a second reference design for AI factories, featuring zero-water cooling and high-efficiency air-cooled configurations.
• May 2026: Vertiv is expanding AI-ready cooling manufacturing, aiming to double regional chiller capacity by the end of 2026, with a large test lab planned for early 2027.
• December 2025: Vertiv completed its acquisition of PurgeRite, strengthening its liquid cooling services.
• November 2025: Schneider Electric expanded EcoStruxure with a prefabricated modular pod combining power, liquid cooling, and high-density racks.

Differentiation now comes down to energy efficiency, scalability, reliability, and readiness for AI workloads.

The Takeaway

Rising rack densities, AI growth, and sustainability mandates are reshaping how data centers manage heat. Liquid and hybrid cooling, AI-optimized controls, and modular designs will define the next phase, with Asia Pacific leading on scale and North America accelerating on AI demand.

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