Accelsius
Accelsius makes liquid cooling systems for AI and high-performance computing hardware, claiming 50% energy savings versus air cooling. The 90-person company raised $90M in a January 2026 Series B.
The growth story
Accelsius grew from 16 to 90 employees between 2022 and 2026, raising $90M along the way, most recently a Series B in January 2026.
About
Accelsius sells direct-to-chip liquid cooling systems for data centers running AI and high-performance computing workloads. Its NeuCool technology targets operators seeking to reduce energy costs, claiming to handle 4500W per socket while cutting cooling energy use in half versus air systems.
The company has grown to 90 employees since its 2022 founding. Its $90M Series B in early 2026 included industrial backers like Johnson Controls and Legrand, suggesting interest from building infrastructure players.
Founders and leadership
Engineering makes up nearly a third of the workforce (25 of 90 employees). The company has a median tenure of 2 years, typical for a hardware startup.
The Accelsius org chart
John Hewitt (Chief Executive Officer) leads 30 mapped leaders with 7 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Engineering 31 (+29% YoY), Operations 10 (0% YoY), Sales 7 (+17% YoY), Information Technology 7 (+75% YoY), Marketing 5 (0% YoY), Business Development 5 (0% YoY).
Talent flow
Dell Technologies is the top talent source, supplying 10 hires. The workforce draws heavily from Texas schools, with 12 University of Texas at Austin alumni and 4 from Texas A&M.
Most common previous employers of Accelsius staff: Dell Technologies (10), NI (National Instruments) (6), Tesla (4), Hyliion (4), Innventure (3), Applied Materials (3). Former Accelsius employees most often moved to ROC Rachel Orovio Creative (1), Centre Technologies (1), CDW (1), TACripe Enterprises (1), Jabil (1), PayBuddyTM (1).
Alumni worth knowing
What this company is made of
Most common skills at Accelsius: Leadership (40), Microsoft Office (32), Project Management (31), Microsoft Excel (24), Management (24), Engineering (21), Manufacturing (19), Analytical Skills (18).
Where the team actually sits
Accelsius people are concentrated in Texas, United States (54), Austin, Texas Metropolitan Area (8), United States (3), Illinois, United States (1).
Search footprint
Accelsius attracts about 45,510 organic search visits a month, traffic worth roughly $51K a month if bought through ads. It gained 2,363 ranking keywords and lost 1,833 in the last period.
What employees say
- Compensation
- 4.30 / 5
- Career opportunities
- 4.50 / 5
- Senior management
- 4.20 / 5
- Work-life balance
- 4.50 / 5
Frequently asked
Accelsius has 90 employees as of September 2026.
Accelsius has raised $90M in total, most recently a Series B round in January 2026.
John Hewitt (Chief Executive Officer) sits at the top of Accelsius's reporting structure, with 7 direct reports.
The most common previous employers of current Accelsius staff are Dell Technologies (10 people), NI (National Instruments) (6 people), Tesla (4 people).
Former Accelsius employees most often move to ROC Rachel Orovio Creative (1), Centre Technologies (1), CDW (1).
Accelsius attracts about 45,510 organic search visits a month, worth roughly $51K a month in equivalent ad spend.
The most common skills among Accelsius staff are Leadership, Microsoft Office, Project Management, Microsoft Excel, Management.
Accelsius staff are concentrated in Texas, United States (54), Austin, Texas Metropolitan Area (8), United States (3).
Accelsius has about 31 people in Engineering, up 29% over the past year, as of September 2026.
Accelsius has about 10 people in Operations, up 0% over the past year, as of September 2026.
Computed from 74 current and 24 former Accelsius profiles, as of September 2026. Source: Crustdata.
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