The rapid expansion of artificial intelligence, machine learning, and high-performance computing workloads is accelerating the adoption of advanced liquid cooling technologies across global data centre infrastructure. According to industry research, the global data centre liquid cooling market was valued at USD 6.6 billion in 2025 and is projected to reach USD 8.2 billion in 2026, before expanding to USD 29.5 billion by 2033. This growth is characterised by the rapid deployment of direct-to-chip cold plate cooling, immersion cooling, and coolant distribution units, which are essential for dissipating the intense heat loads generated by modern graphics processing units.

At the same time, the industry must navigate a critical regulatory deadline under the US Environmental Protection Agency's American Innovation and Manufacturing Act. Starting January 1, 2027, all new data centre air conditioning and cooling equipment must utilise refrigerants with a Global Warming Potential rating below 700. This upcoming limit renders legacy data centre refrigerants, such as R-410A and R-407C, obsolete for new system installations.

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The Regulatory Squeeze on Legacy F-Gases

The GWP cap of 700 effectively outlaws the use of legacy hydrofluorocarbon F-gases in new data centre builds. R-410A, which carries a high GWP of 2088, and R-407C, with a GWP of 1774, have long been the industry standard for providing reliable, high-capacity cooling. While existing data centre installations can legally continue to operate and be serviced using these legacy gases, new equipment designs must transition immediately to compliant, low-GWP alternatives.

To meet this challenge, the cooling industry is migrating rapidly toward lower-GWP F-gas solutions. A primary transition pathway is the adoption of R-32, a single-component HFC with a GWP of 675. Because R-32 falls comfortably below the 700 GWP threshold, it provides a legally compliant and thermodynamically efficient solution for modern data centre chillers and direct-expansion systems. As a trusted global partner in the F-gas sector, AFS Cooling offers comprehensive procurement and supply solutions for R-32, ensuring data centre operators can secure the necessary chemical volumes ahead of the regulatory transition.

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Operational Impacts and Safety Standards

Transitioning to low-GWP refrigerants like R-32 introduces new engineering and safety variables that data centre teams must address during the early planning stages. Unlike older, non-flammable F-gases, many low-GWP alternatives are classified as mildly flammable A2L substances. This classification triggers strict compliance with updated safety standards that govern system design and installation.

Under these updated safety frameworks, the minimum room size for an air-conditioning unit is directly determined by the volume of refrigerant charge it contains. This standard is designed to prevent the accumulation of an ignitable gas mixture in the event of a sudden system leak. If a designated server room or mechanical space does not meet the minimum size requirement relative to the system's charge, facility teams must integrate automatic leak detection systems and dedicated mechanical ventilation systems to dilute the refrigerant concentration to safe levels.

Furthermore, because modern hyperscale data centres increasingly rely on hybrid systems combining air and liquid cooling, managing these refrigerant volumes becomes highly complex. Thermal management loops must be precisely designed to distribute heat from direct-to-chip cold plates and Coolant Distribution Units to external chillers, all while maintaining complete compliance with both local building codes and GWP restrictions.

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Mitigating Supply Chain and Compliance Risks

For data centre developers and operators, the combined pressure of strict regulatory deadlines and supply chain volatility makes early procurement planning essential. The phasedown of bulk HFC production and consumption under international frameworks, including the EU F-Gas Regulation and the US AIM Act, is deliberately designed to restrict the overall supply of virgin synthetic gases. This structural scarcity, compounded by geopolitical shipping disruptions and aftermarket cylinder shortages, has introduced significant price volatility and lead-time uncertainty to the refrigerant market.

AFS Cooling provides the specialised technical, logistical, and compliance expertise needed to navigate this complex risk landscape. As a global importer of record and quota holder, AFS Cooling manages the entire supply chain, from global supplier evaluation to final on-site delivery. By securing long-term supply agreements and strategic inventory buffers, AFS Cooling protects data centre projects from the sudden shortages of critical refrigerants like R-32.

In addition to procurement, AFS Cooling simplifies the administrative burden of regulatory compliance. The firm provides complete documentation packs, manages F-gas quota allocations, and handles meticulous reporting to relevant environmental authorities. By aligning documentation templates directly with local regulatory requirements, AFS Cooling helps data centre teams minimise customs delays and ensure that newly imported pre-charged cooling equipment can be legally placed on the market.

As the January 1, 2027, deadline approaches, proactive transition planning is the key to maintaining operational continuity and achieving sustainability objectives. Data centre operators must act now to evaluate their cooling portfolios, collaborate with experienced technology providers, and secure their F-gas supply chains with a dedicated global partner like AFS Cooling.