How much funding has Accelsius raised?

Accelsius has raised $89.0M in total funding. Their latest funding round was Series B. Key investors include Johnson Controls, Legrand, Innventure.

Where is Accelsius headquartered?

Accelsius is headquartered in Austin, USA. The company has a team of 51-200 people.

What does Accelsius do?

Accelsius operates in the AI Infrastructure sector. A high-performance thermal management company providing proprietary two-phase direct-to-chip liquid cooling systems designed for AI and high-performance computing (HPC) data centers. Enables data centers to handle the extreme heat flux of next-generation GPUs while reducing operational expenses (OpEx) by up to 35%, eliminating the need for water-intensive cooling, and significantly increasing rack density.

When was Accelsius founded?

Accelsius was founded in 2022. It is based in Austin, USA.

How much funding has Accelsius raised?

Accelsius has raised $89.0M in total funding. Key investors include Johnson Controls, Legrand, Innventure.

Who is the CEO of Accelsius?

John Hewitt is the CEO of Accelsius. The company was founded in 2022.

Where is Accelsius located?

Accelsius is headquartered in Austin, USA.

What funding stage is Accelsius at?

Accelsius is currently at the Growth Stage stage.

How many employees does Accelsius have?

Accelsius has approximately 51-200 employees.

Accelsius

Category: AI Infrastructure

A high-performance thermal management company providing proprietary two-phase direct-to-chip liquid cooling systems designed for AI and high-performance computing (HPC) data centers. Accelsius was founded in 2022. The company is led by John Hewitt. Based in Austin, USA. Team size: 51-200. Total funding raised: $89.0M. Latest round: Series B. Key investors include Johnson Controls, Legrand, Innventure.

Founded: 2022
Headquarters: Austin, USA
Team size: 51-200
Total funding: $89.0M

Value proposition

Enables data centers to handle the extreme heat flux of next-generation GPUs while reducing operational expenses (OpEx) by up to 35%, eliminating the need for water-intensive cooling, and significantly increasing rack density.

Products and solutions

NeuCool Two-Phase Direct-to-Chip Platform, In-rack Coolant Distribution Units (CDUs), Proprietary Dielectric Heat Sinks, NeuCool Management Software (Real-time thermal monitoring), Retrofit Liquid Cooling Kits for existing air-cooled infrastructure

Unique value

Utilizes 'two-phase' cooling technology where the coolant boils and evaporates at the chip surface, leveraging the latent heat of vaporization to remove heat significantly more efficiently than traditional air or single-phase liquid cooling.

Target customer

Hyperscale data center operators, colocation providers (e.g., Equinix), AI infrastructure developers, and enterprise high-performance computing users.

Industries served

Artificial Intelligence & Machine Learning, High-Performance Computing (HPC), Cloud Service Providers, Edge Computing & Telecommunications, Enterprise Data Centers

Technology advantage

The system is waterless at the chip level (using non-conductive dielectric fluid), preventing hardware damage risks. Business-wise, the company benefits from strategic industrial partners and investors Johnson Controls (HVAC/chiller integration) and Legrand (data center infrastructure), plus expanded Austin manufacturing capacity.

How they differentiate

Proprietary two-phase 'waterless' direct-to-chip liquid cooling that utilizes dielectric fluid and latent heat of vaporization, significantly reducing the risk of hardware damage compared to water-based systems.

Main competitors

ZutaCore, CoolIT Systems, Vertiv

Key partnerships

Johnson Controls (Strategic investor; HVAC/chiller integration), Legrand (Strategic investor; data center infrastructure integration), Equinix (Co-Innovation Facility / CIF deployment), Nordik Data Centers (Quebec AI facility / co-innovation lab), Innventure (Founding commercialization partner), NVIDIA Inception (Member)

Notable customers

Equinix, DarkNX, Nordik Data Centers, Telehouse, Park Place Technologies

Major milestones

Spin-out from Innventure in 2022 to commercialize Nokia Bell Labs thermal technology, Commercial launch of the NeuCool two-phase liquid cooling platform, Secured $24M Series A funding (announced Nov 2024), Closed $65M Series B led by Johnson Controls with Legrand (Jan 2026), DarkNX agreement to deploy NeuCool across 300MW Ontario AI campus, NeuCool MR250 GA and NeuCool IR150 launch (GTC / Data Center World 2026), John Hewitt named CEO; Josh Claman becomes Executive Chairman (effective July 2026)

Growth metrics

Scaling to support next-generation GPU heat fluxes; enables up to 35% reduction in data center OpEx and eliminates water consumption for cooling.

Market positioning

High-performance AI infrastructure specialist providing thermal management for 'Gigawatt-class' AI factories and high-density data centers.

Geographic focus

North America, Europe, and Asia-Pacific

Patents and IP

Built upon a foundational IP portfolio originally developed by Nokia Bell Labs, consisting of multiple patents related to two-phase heat transfer, microfluidics, and thermal interface materials.

About John Hewitt

John Hewitt is a global business executive with 30+ years in industrial, technology, and data center infrastructure. Prior to Accelsius he was CEO of Robertshaw Controls; previously President of Vertiv Americas (multi-billion-dollar AI data center business). Earlier senior roles at TE Connectivity, Motorola, and Baker Hughes. Founding Accelsius board member.

Latest news about Accelsius

Accelsius secured 65 million dollars in Series B funding from Johnson Controls and Legrand to scale liquid cooling for gigawatt-class AI factories. This investment marks a systemic shift as air coolin

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Official website: https://accelsius.com/