Accelsius closed a $65 million Series B financing led by Johnson Controls, with Legrand joining as a strategic investor, as the company ramps production and expands deployment of its two-phase, direct-to-chip liquid cooling technology for AI and high-performance computing environments.
The Austin, Texas-based company said the funding will support an expansion of its manufacturing footprint in Austin, accelerate global growth, and speed rollout of its proprietary NeuCool two-phase cooling platform, which uses non-conductive fluids circulating in closed loops to manage increasingly dense GPU-driven heat loads.
Accelsius positioned the round as a response to rising thermal demands as operators push rack power higher and shift away from air-based cooling. The company cited current rack consumption levels of up to 130 kilowatts and noted that traditional air cooling can account for a significant share of a data center’s power use, driving interest in liquid cooling architectures designed for higher thermal densities.
The strategic backing is intended to pair Accelsius’ cooling approach with capabilities from both industrial partners. Johnson Controls highlighted its data center thermal management expertise and cited its YORK YVAM chiller as part of its broader efficiency-focused portfolio. Legrand pointed to its data center infrastructure lineup spanning power distribution, rack infrastructure, and connectivity.
Accelsius also said it is developing new thermal reference designs aimed at enabling greater cooling capacity for dense AI deployments, and noted its participation in NVIDIA’s Inception program. The company pointed to recent commercial momentum, including an agreement to deploy NeuCool across a 300-megawatt campus for DarkNX in Ontario.
Accelsius, founded by Innventure, said its two-phase platform can deliver operating expense savings versus single-phase direct-to-chip approaches and reduce total cost of ownership, positioning the technology as operators pursue higher-density AI buildouts while trying to maintain efficiency and sustainability targets.
KEY QUOTES:
“We are witnessing the dawn of a new era in digital infrastructure, where the ‘AI Factory’ replaces the traditional data center. To meet the demands of this age, we must build responsibly and efficiently at a gigawatt scale.” “The investment from industrial giants like Johnson Controls and Legrand is about more than just capital; it signals strong potential and accelerating adoption of two-phase approaches that deliver high-performing AI solutions with unmatched efficiency.”
Josh Claman, Chief Executive Officer, Accelsius
“AI-scale computing is rewriting the thermal playbook. Our investment in Accelsius aligns with Johnson Controls’ strategy and commitment to deliver advanced, high-efficiency cooling solutions that enable operators to deliver AI solutions rapidly, now and in the future.”
Austin Domenici, Vice President and General Manager, Global Data Center Solutions, Johnson Controls
“The data center industry is facing a critical inflection point where thermal management is no longer just a facility concern, but a strategic imperative for IT performance. Accelsius’ two-phase, direct-to-chip technology offers a clear path to supporting the heat densities of AI workloads while improving energy efficiency. We are proud to invest in a company that is not only innovating but doing so with a focus on sustainability and operational practicality.”
Brian DiBella, President and CEO, Legrand North and Central America
