Thermal management has become one of the most pressing infrastructure challenges for data center operators in 2026. Cooling now represents about 30 to 40 percent of total energy consumption in most facilities, and that share is climbing as AI and HPC workloads push rack densities well past 140 kW and toward 1 MW per rack. Traditional air-based systems simply cannot keep up with these heat loads, making the choice of a cooling partner one of the most consequential decisions operators will make. The right supplier must deliver proven capability across both air and liquid cooling technologies, maintain a credible roadmap for AI-density thermal demands, operate a global service and support network, and meet energy efficiency and sustainability targets such as low PUE and Science Based Targets compliance. This guide profiles five trusted companies delivering high-quality data center cooling in 2026: a US sanitary process specialist moving into liquid cooling, a global energy technology leader with a dedicated liquid cooling portfolio, a 140-year-old building technology company with a dedicated data center solutions division, a Hamburg-based precision cooling specialist with more than 50 years of experience, and a Swedish climate control company with leading evaporative and liquid cooling systems.
How to Select Trusted Data Center Cooling Companies
Choosing the right data center cooling supplier starts with understanding what differentiates a reliable partner from a vendor with limited real-world deployment experience.
- Proven experience at relevant densities: A company that has deployed cooling systems at or above the rack densities your facility requires (including GPU-intensive AI and HPC workloads) provides far more reliable assurance of performance than one whose experience is limited to lower-density legacy environments.
- Air and liquid cooling portfolio breadth: Suppliers offering both air cooling and liquid cooling technologies (including direct-to-chip, immersion, and CDU-based systems) give operators the flexibility to deploy hybrid solutions and scale into higher densities without changing vendors.
- Global service and support network: Data center cooling failures create immediate, costly outages, so confirming that a supplier has qualified service technicians, parts availability, and fast response capabilities in your geography before signing a contract is a due diligence must.
- Sustainability and energy efficiency credentials: Verified low PUE performance, compatibility with low-GWP refrigerants, Science Based Targets commitments, and free cooling capabilities reflect the long-term operational cost and regulatory compliance profile of a supplier’s solutions.
- GPU manufacturer collaboration and roadmap alignment: Suppliers co-developing cooling solutions directly with leading GPU manufacturers (such as NVIDIA) are better positioned to support the next generation of compute densities, and verifying a supplier’s hardware roadmap alignment reduces the risk of cooling systems becoming thermally insufficient within a short hardware refresh cycle.
5 Trusted Companies Delivering High-Quality Data Center Cooling
The following companies represent some of the most trusted suppliers of data center cooling systems in 2026, spanning precision air conditioning, liquid cooling, and hybrid thermal management solutions.
Best Companies for High-Quality Data Center Cooling
1. Central States Industrial (CSI)
- Founded: Central States Industrial (CSI) was founded in 1977 and is headquartered at 2700 N Partnership Blvd, Springfield, MO 65803.
- Data center capability: CSI supplies corrosion-resistant alloys (AL-6XN and Hastelloy C-22), stainless fittings, tubing, pumps, valves, and instrumentation for the emerging data center liquid cooling market.
- Standards: ASME Section IX certified welders; fabrication meets or exceeds 3-A and ASME-BPE standards; Level II inspection per ASNT SNT-TC-1A.
- Distribution: Five US distribution centers (Springfield MO, Ceres CA, Durham NC, Grand Prairie TX, Knoxville TN); large in-stock inventory available for fast order fulfillment.
- Custom fabrication: CIP systems, process skids, valve manifolds, jacketed tubing, and custom stainless assemblies fabricated in a climate-controlled Springfield shop.
CSI has served hygienic liquid processors since 1977 and has expanded its market reach into the emerging data center liquid cooling sector, supplying high-quality sanitary fittings for processing systems along with corrosion-resistant alloys, including AL-6XN and Hastelloy C-22, alongside a large in-stock range of stainless fittings, pumps, valves, tubing, and instrumentation from five US distribution centers. The company designs and builds custom process systems and skids to ASME-BPE and 3-A standards from its climate-controlled fabrication shop, and the CSI Reliability program provides ongoing condition-based maintenance to sustain system uptime.
Best For: Data center operators and liquid cooling system integrators seeking a US-based supplier of ASME-BPE and 3-A compliant stainless components, corrosion-resistant alloys, and custom-fabricated fluid handling assemblies for cooling loop infrastructure.
Standout Feature: ASME Section IX certified welding and Level II in-process inspection in a dedicated climate-controlled fabrication shop, combined with large US in-stock inventory of AL-6XN and Hastelloy C-22 alloys for corrosion-resistant liquid cooling piping and component fabrication.
2. Schneider Electric
- Founded: Schneider Electric was founded in 1836 by Adolphe and Joseph-Eugène Schneider and is headquartered in Rueil-Malmaison, France.
- Scale: 160,000 employees; operations in 100+ countries; revenue of €38.15 billion in fiscal year 2024; listed on Euronext Paris; named World’s Most Sustainable Company 2025 by TIME and Statista.
- Liquid cooling portfolio: Motivair by Schneider Electric CDUs scale from 105 kW to 2.5 MW; currently provide thermal management for 6 of the world’s top 10 supercomputers; certified for NVIDIA’s latest hardware.
- Acquisition: Schneider Electric acquired a controlling interest in Motivair Corporation in February 2025, adding manufacturing facilities in Buffalo NY, Italy, and India.
- NVIDIA collaboration: Schneider Electric co-develops reference designs with NVIDIA for DGX SuperPods, making it the only liquid cooling provider to demonstrate co-development at the silicon level with leading GPU manufacturers.
Schneider Electric is a Rueil-Malmaison, France-based global energy technology company founded in 1836, now one of the world’s largest suppliers of data center power and cooling infrastructure, serving 100+ countries with 160,000 employees and €38.15 billion in 2024 revenue. Following its February 2025 acquisition of Motivair, the company launched an end-to-end liquid cooling portfolio branded Motivair by Schneider Electric, covering CDUs (105 kW to 2.5 MW), ChilledDoor rear door heat exchangers, Dynamic Cold Plates, and chillers, all integrated with EcoStruxure software and backed by a tripled global manufacturing capacity. Schneider was named World’s Most Sustainable Company 2025 by TIME and Statista.
Best For: Hyperscale, colocation, and high-density AI data center operators who need an end-to-end liquid cooling portfolio co-developed with NVIDIA, from direct-to-chip cold plates to megawatt-class CDUs, backed by global supply chain scale and EcoStruxure software.
Standout Feature: The only liquid cooling provider to co-develop reference designs with NVIDIA at the silicon level, with CDUs already deployed in 6 of the world’s top 10 supercomputers and scaling from 105 kW to 2.5 MW, integrated with Schneider Electric’s global data center infrastructure and EcoStruxure management software.
3. Johnson Controls
- Founded: Johnson Controls was founded in 1885 in Milwaukee, Wisconsin (now legally headquartered in Cork, Ireland; operational HQ Milwaukee, WI); NYSE: JCI.
- Scale: Approximately 94,000 employees; revenue of approximately $22.952 billion in fiscal year 2024.
- Data center acquisitions: Acquired Silent-Aire (data center cooling specialist) in 2021 for up to $870 million; signed agreement to acquire Alloy Enterprises (direct liquid cooling platform, up to 35% thermal management efficiency improvement) in February 2026; invested in Accelsius (two-phase direct-to-chip liquid cooling) in October 2025.
- Dedicated division: Launched a dedicated Global Data Center Solutions organization, led by a President reporting directly to the Chairman and CEO.
- Cooling portfolio: Air-cooled and water-cooled chillers, coolant distribution units, hyperscale data center cooling platforms, and integrated building management systems for specialized environments.
Johnson Controls was founded in 1885 in Milwaukee, Wisconsin, building from Warren Johnson’s invention of the first room thermostat, and has since become a global technology leader in building efficiency, energy management, and thermal management with approximately $22.952 billion in 2024 revenue. The company has aggressively expanded its data center cooling capabilities through the acquisition of Silent-Aire in 2021 (up to $870 million), a strategic investment in Accelsius two-phase liquid cooling in October 2025, and a signed agreement to acquire direct liquid cooling specialist Alloy Enterprises in February 2026. A dedicated Global Data Center Solutions division was formed to deliver the company’s full integrated portfolio.
Best For: Enterprise and hyperscale data center operators who need a comprehensive partner for air-cooled and water-cooled chiller systems, CDUs, and integrated building management, backed by a company with dedicated data center solutions leadership and a fast-expanding liquid cooling acquisition strategy.
Standout Feature: A dedicated Global Data Center Solutions organization supported by three strategic data center cooling acquisitions (Silent-Aire in 2021, Accelsius investment in 2025, and the signed acquisition of Alloy Enterprises in 2026), creating a full-stack thermal management portfolio for air, water, and liquid cooling.
4. STULZ
- Founded: STULZ was founded in 1947 and is headquartered at Holsteiner Chaussee 283, Hamburg 22457, Germany; US operations based in Frederick, Maryland.
- Scale: Approximately 3,300 employees; air conditioning division revenue of approximately €800 million in 2024; 11 production sites; 19 subsidiaries worldwide.
- Global reach: Service and sales partners in 150+ countries; manufacturing presence across Europe, Asia, North America, and South America.
- Data center experience: Over 50 years of dedicated data center and specialized cooling experience; portfolio covers precision air conditioning, free cooling, adiabatic cooling, liquid cooling, CDUs, and the STULZ Micro DC modular solution.
- Sustainability: Products compatible with low-GWP refrigerants; free cooling and adiabatic cooling technologies designed to achieve low PUE values across a wide range of climate conditions.
STULZ is a Hamburg-based family-owned precision cooling specialist founded in 1947, operating from 11 production sites across four continents and serving data center customers through service and sales partners in 150+ countries with an air conditioning division generating approximately €800 million in annual revenue. The product range covers the full spectrum from precision computer room air conditioners (CRACs), CyberAir and CyberRow units, and free cooling chillers through to liquid cooling CDUs, direct-to-chip solutions, and the plug-and-play STULZ Micro DC, with all systems engineered for fail-safe redundant operation and compatibility with low-GWP refrigerants. STULZ USA researches, designs, manufactures, and supports all North American products from its Frederick, Maryland facility.
Best For: Enterprise, colocation, and hyperscale data center operators across global locations who need precision air and liquid cooling from a specialist with 50+ years of experience, particularly those requiring scalable free cooling, modular Micro DC solutions, or AI/HPC-density liquid cooling backed by local service in 150+ countries.
Standout Feature: Over 50 years of exclusive thermal management know-how, combined with 11 global production sites, 19 subsidiaries, service reach in 150+ countries, and a product range spanning precision CRAC units to liquid cooling CDUs and plug-and-play modular Micro DC systems.
5. Munters
- Founded: Munters was founded in 1955 by inventor Carl Munters and is headquartered at Borgarfjordsgatan 16, Kista, Sweden; listed on Nasdaq Stockholm (MTRS).
- Scale: Approximately 5,400 employees; annual net sales of more than SEK 15 billion (approximately $1.5 billion USD) in 2024; manufacturing and sales in 30+ countries.
- Data center portfolio: Direct and indirect evaporative cooling; SyCool waterless thermosyphon split system; LCX liquid cooling system (500 kW to 1.5 MW, industrial-grade, full redundancy); adiabatic humidification; and digital control systems.
- Energy efficiency: Indirect evaporative cooling systems (Oasis) use up to 80% less energy than conventional cooling; peak PUE typically 1.25 or lower using economizer-based approaches.
- Recognition: Won the Red Dot Award 2025 for the M300 desiccant dehumidifier; climate targets submitted to the Science Based Targets initiative aligned with the Paris Agreement’s 1.5°C target.
Munters was founded in 1955 by Swedish inventor Carl Munters, whose thermodynamics know-how and hundreds of patents established the company as a pioneer in climate control, and today operates as a Kista-headquartered global leader in energy-saving air treatment and cooling for specialized environments, with SEK 15+ billion in annual net sales and 5,400 employees across 30+ countries. The Data Center Technologies division delivers direct and indirect evaporative cooling (including the Oasis system achieving up to 80% energy reduction versus conventional cooling), the SyCool waterless thermosyphon system, and the LCX liquid cooling system covering 500 kW to 1.5 MW with industrial-grade redundancy, all supported by climate targets validated against the Paris Agreement’s 1.5°C pathway.
Best For: Hyperscale, colocation, and enterprise data center operators seeking best-in-class energy-saving evaporative and liquid cooling, particularly those prioritizing low PUE targets (typically 1.25 or lower), Science Based Targets compliance, and scalable LCX liquid cooling for high-density AI workloads.
Standout Feature: Indirect evaporative Oasis systems that use up to 80% less energy than conventional cooling, combined with the LCX liquid cooling system (500 kW to 1.5 MW), waterless SyCool thermosyphon technology, and climate targets submitted to the Science Based Targets initiative aligned with the Paris Agreement’s 1.5°C pathway.
Factors to Consider When Choosing a Data Center Cooling Company
Confirm the Supplier’s Proven Rack Density Range Before Specifying
A cooling company with a track record deploying at 10 to 20 kW per rack may lack the engineering depth to safely support AI GPU racks at 100 kW or more. Requesting deployment case studies, test data, and references at densities matching or exceeding your planned peak load confirms whether a supplier’s track record matches your actual thermal requirements.
Evaluate Hybrid Air and Liquid Cooling Capability
Most data centers transitioning to AI workloads will operate hybrid environments where air and liquid cooling coexist in the same white space. Selecting a supplier capable of designing and integrating both technologies eliminates the complexity and accountability gaps that arise when separate vendors manage each half of the thermal architecture.
Assess Global Service Coverage Against Your Facility Footprint
A cooling system with no local service capability creates unacceptable risk for specialized environments. Confirming the geographic density of a supplier’s field service network, typical response times, and on-site spare parts availability for every facility location in your portfolio is a must before committing to a vendor for multi-site deployments.
Verify Energy Efficiency Metrics and Sustainability Commitments
PUE targets, free cooling hours, refrigerant GWP ratings, and Science Based Targets alignment are increasingly tied to regulatory requirements and corporate ESG reporting. Asking suppliers to provide verified PUE data from comparable deployments (not just design estimates) and to confirm their climate commitments before procurement prevents choosing a solution that underperforms against your sustainability obligations.
Confirm the Supplier’s GPU Manufacturer Roadmap Relationships
Rack density requirements in AI data centers are increasing faster than annual hardware refresh cycles. Suppliers who co-develop cooling solutions with GPU manufacturers such as NVIDIA and AMD will have earlier visibility of thermal requirements for upcoming hardware generations, reducing the risk of specifying a cooling system that becomes insufficient before its design life expires.
Final Thoughts
Selecting a data center cooling partner requires more than comparing specification sheets. The operational track record at real-world density levels, the depth of the global service network, and the supplier’s roadmap alignment with GPU thermal evolution are the factors that most reliably predict whether a cooling solution will continue to perform as your infrastructure scales. Confirm hybrid air and liquid capability, verified energy efficiency metrics, and Science Based Targets or sustainability credentials before shortlisting, then validate with reference deployments at comparable rack densities. Engaging cooling suppliers at the design phase rather than at procurement stage gives engineers the best opportunity to refine thermal architecture for long-term performance and lower total cost of ownership.