The efficiency of our machines is built on a technological breakthrough: acoustic Stirling. With zero mechanical wear parts, our systems eliminate heavy maintenance costs and unplanned downtime. Combined with exceptional thermal performance, this robustness guarantees a fast return on investment depending on the application — turning your ecological transition into a genuine profitability driver
Our answer: bring a fifth natural refrigerant to the HVAC world. Helium. Zero greenhouse impact, zero PFAS, non-flammable, non-toxic. The only natural refrigerant without a compromise but one that requires a technological breakthrough to work: acoustic Stirling.
"You knew solar energy, hydraulic energy, wind energy, now you will have to rely on the energy of sound."
In an acoustic Stirling system, we generate acoustic waves at the resonance frequency to perform the compression and expansion work. Under the effect of the acoustic wave, each gas particle compresses and expands along a cycle close to the Stirling cycle, transporting heat step by step. The result is a temperature gradient that produces heat and cold on demand. Because the process involves no phase change, the technology is free from the pressure constraints of conventional systems — opening up a remarkably wide operating range
2 acoustic drivers (1) in phase opposition — cancelling vibrations, generating the acoustic wave
2 Thermocore (2) heat exchangers and a regenerator — pumping heat from cold to hot
A sealed pressure vessel — helium inside.
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10 kW
EQORE BOOST POWER
100 × 35 cm
Dimensions
13 patents
Held in House
+10 000h
Tested
Operating range : - 110°C to 130°C
100% modulating, no cycling
No high/low pressure constraints
Instant start/stop
Stackable modules for higher capacity Redundancy-ready
Operational continuity guaranteed
Neutral gas, Helium, (GWP=0), PFAS free
F-Gas and Reach compliant
Zero regulatory exposure
Twice the lifespan
Helium Class A1 — no ATEX zone
No specialist required
Silent & vibration-free
Zero wear parts, oil-free
All-climate reliability — extreme conditions
Solution 100% made in France
IP held in-house · 13 patents
Et par rapport à une chaudière à gaz traditionnelle
Sanitary hot water boost
Heat recovery from 40°C to produce hot water up to 90°C
• COP up to 5 — where conventional heat pumps fail
• Domestic hot water and industrial hot water production
• Multi-family residential,commercial buildings, industry
Field pilots underway
Industrial cold
Industrial processes down to –110°C:
• Food & beverage
• Semiconductors
• Pharmaceuticals
Industrial heat
Decentralized production of hot water and steam up to 130°C for industrial decarbonization
• Process water & washing
• Low-pressure steam 20–60 kW
• Direct alternative to gas boilers
EQUIUM is a unique entrepreneurial adventure that is developing every day thanks to a complementary team with a strong experience in innovation processes, design, development of breakthrough technological products, acceleration and industrialization of technological innovation and HVAC industry.
The scientific aspects are supported by the CES from Mines Paris Tech and the LIED PIERI, major university partners in heat transfer and thermoacoustics. Two councils (strategic and scientific) support the company, notably with extensive experience in the field of heat pumps, energy and high-tech industry.
Comment manager une startup deeptech en résonance ?
Entrepreneur from over 25 years of experience, expert in innovation through design thinking, Cédric founded EQUIUM to develop an impactful and scalable solution to energy and climate transition that the world is facing.
35 years across automotive (PSA, Siemens, Continental) and premium audio (Devialet). 4th deep-tech product brought to market. Expert in multiphysics, acoustics and thermal systems. 3 PhDs on his team.
10 years in aerospace, then 10 years in HVAC. Expert in developing new thermodynamic machine ranges. Leads the integration of the EQORE core into heat pumps.
25 years at Bosch, Devialet, Velco. 3rd deep-tech product brought to industrialization. End-to-end mastery: supply chain, quality, operations.
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10 years in B2B strategic marketing around the energy transition. Leads EQUIUM's go-to-market strategy — listening to partners and the market to guide development and accelerate EQORE's commercialization.
Founder and President of ATEQ — French company, world leader in leak testing (revenue ~$200M, 26 subsidiaries).
Runs Enthéos, a Family Office specializing in unlisted investment, based in Paris and Rennes. Enthéos actively supports companies placing decarbonization and sobriety at the heart of their model.
CEO of ARMOR GROUP: Nantes-based industrial SME, 2,500 employees, €436M revenue. Knight of the Légion d'Honneur.
Represents Pays de la Loire Participations — regional co-investment fund managed by Turennes Capital. Institutional support rooted in the Loire industrial ecosystem.
Serial entrepreneur: co-founder of Direct Energie (sold to Total in 2018), founder of Senioradom (sold to Vyv Group in 2020). Active business angel in energy and impact technologies.
Co-founder of Enphase Energy ($22Bn). Built one of the world's leading solar microinverter companies. 100 US patents. Personal investor in this round. Technology mentor on electronic design and industrialization.
Polytechnique graduate, former VP at ENGIE, former Head of Nuclear Energy at CEA. Member of the Académie des technologies. Knight of the Légion d'Honneur. Top-tier institutional credibility and energy expertise.
20 years of expertise in general management and organizational coaching. Investment experience in energy, real estate and micromobility across Europe, the Middle East and Africa.
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