Startup · Belgium
CALYOS
HQ Charleroi, BelgiumFounded 201411-50 employeesUpdated
Passive cooling systems for computing and other applications.
Funding1 round · ~$4.4M
- Equity raised
- ~$4.4M
- Latest
- ~$4.4MStage undisclosed · Sep 27, 2022
| Announced | Stage | Amount | Valuation | Lead investors | Other investors | Confidence |
|---|---|---|---|---|---|---|
| Sep 27, 2022 | Undisclosed | ~$4.4M | — | — | Finindus, Invest For Jobs, Sambrinvest, SFPIM (Federal Holding and Investment Company) | Reported |
- Undisclosed~$4.4MSep 27, 2022
Raised counts equity rounds; debt, secondary sales and grants are totaled separately. Amounts in other currencies are converted at the announcement month's average rate. A ~ marks an estimated or converted amount.
Systems1
- AirgradeA passive two-phase cooling system for air-cooled AI servers.
Newest unveiled first. Systems that belong to a government program link to the program page, where variants, costs and contracts are.
Capabilities1
| Technology | Role | Maturity | TRL | Notes | Confidence |
|---|---|---|---|---|---|
| Advanced manufacturing and materials | Developer | — | — | classify_sectors run 81, sonnet-pass3, taxonomy 2026-10-18b: Passive two-phase cooling with an Aero & Defense market segment and NATO DIANA 2026 selection, with space-heritage heat pipe technology and Airbus and Sonaca as customers. | Reported |
- Developerclassify_sectors run 81, sonnet-pass3, taxonomy 2026-10-18b: Passive two-phase cooling with an Aero & Defense market segment and NATO DIANA 2026 selection, with space-heritage heat pipe technology and Airbus and Sonaca as customers.—Reported
Maturity and TRL describe this organization's work; the field-wide maturity is on each technology's page.
People5
| Person | Role |
|---|---|
| Olivier de Laet | Founder |
| Antoine de Ryckel · LinkedIn ↗ | Chief Executive Officer |
| Mohamed Boutta · LinkedIn ↗ | Chief Financial Officer |
| Olivier de Laet | Founder - Evangelizer - Chief Strategy Officer |
| Vincent Dupont · LinkedIn ↗ | Chief Technical Officer |
Company Metrics
Employee-profile counts reflect LinkedIn profiles associated with the company, not verified headcount. One observation establishes a baseline; it does not establish growth.
Sources8
Profile4
- 1
Calyos · Supports Organization · name
“Calyos | Passive Two-Phase Cooling & Thermal Management”
- 2
calyos-tm.com · Supports Organization · kind
“Calyos was incorporated in 2014 as a spin-off from Euro Heat Pipes”
- 3Government recordNATO DIANA | Official Website
NATO DIANA · Supports Organization
“Passive cooling for energy-efficient, resilient and mission-ready data centres and compute systems”
- 4CompanyCALYOS | LinkedIn
LinkedIn · Supports Organization · hq region, Organization · ownership
“hq_region: Wallonia (profile: QUATRIÈME RUE, 20, ZONING DE JUMET, Charleroi, Wallonia 6040, BE)”
Systems1
- 5
CALYOS · Supports System
“At the Data Centre World Asia show floor, Calyos showcased its **Airgrade** solution . A **passive, two-phase cooling system designed for air-cooled AI servers**.”
Funding1
- 6
Fusacq · Sep 27, 2022 · Supports Funding round, Funding round · amount
“Ce tour de table comprend des investissements de FIDIC, Finindus, Invest for Jobs, Sambrinvest SFPI/FPIM, et d'autres investisseurs privés.”
People1
- 7DatabaseCALYOS — crunchbase profile
Crunchbase via Bright Data · Supports Role, Role · founders
“Current employees: Mohamed Boutta (Chief Financial Officer)”
Other1
- 8
LinkedIn via Bright Data · Supports Organization · company size, Organization · country, Organization · founded, Organization · headquarters, Organization · logo, Organization · url, Organization metric · employees in linkedin, Organization metric · followers
“{"company_size": "11-50 employees"}”
Each fact on this page is attached to the sources that support it. Archived copies are linked when we keep one.