Accelsius

Accelsius is a thermal technology company specializing in advanced liquid cooling solutions for data centers, high-performance computing (HPC), and AI infrastructure. Founded in June 2022 by the venture creation firm Innventure, the Austin, Texas-based company was established to commercialize a two-phase, direct-to-chip liquid cooling technology based on intellectual property acquired from Nokia Bell Labs. The firm is led by CEO Josh Claman, a technology executive with over 30 years of experience in the data center industry, including leadership roles at Dell, NCR, and AT&T.

Accelsius has raised approximately $89 million in total funding. This includes a $24 million Series A round in November 2024 and a $65 million Series B round in January 2026. The Series B was led by Johnson Controls, with strategic participation from Legrand, to accelerate the expansion of its production facilities and support a global rollout.

The company's core product is the NeuCool™ platform, a direct-to-chip liquid cooling system that uses a water-free, non-conductive dielectric refrigerant. The system is designed to manage extreme heat loads, with tests demonstrating cooling capacities of up to 4,500 watts per GPU socket. This allows data center operators to support high-density workloads while potentially reducing facility energy costs by up to 50% compared to conventional cooling methods. The NeuCool platform is engineered for mission-critical reliability, featuring redundant, hot-swappable components such as pumps and power supplies. It is compatible with major processors from Intel, AMD, and NVIDIA. Accelsius serves clients across various sectors, including AI/machine learning, colocation providers, enterprise data centers, and telecommunications. The company has established partnerships with firms like iM Data Centers to deploy its technology in new facilities.

Keywords: direct-to-chip cooling, two-phase liquid cooling, data center thermal management, high-performance computing cooling, AI infrastructure cooling, NeuCool platform, dielectric refrigerant, enterprise cooling, edge computing, energy efficient cooling, data center sustainability, mission critical cooling, server liquid cooling, GPU cooling, CPU cooling, thermal technology, rack density solutions, liquid cooling systems, advanced cooling, North American manufacturing