Airthium LinkedIn · Jun 2026
Announces the live community round, cites the French chemical-plant LOI, government funding support, and the company’s cumulative raise to date.
Decarbonized heat and power cheaper than fossil fuels
Company research
Public company, workplace, funding, and market signals
Updated Jul 30, 2026
Overview
Airthium is a Paris-area industrial heat electrification startup building a hybrid high-temperature heat pump / heat engine that helps factories decarbonize 150–550°C process heat by switching between electricity and gas based on price and carbon signals, with a parallel long-duration thermal storage roadmap.
Primary product
Hybrid high-temperature heat pump / heat engine for industrial process heat
Founded
2016
Headquarters
Les Loges-en-Josas, Île-de-France, France
Team size
10-20
Industry
Industrial decarbonization / energy
Sub-industry
High-temperature industrial heat pumps and thermal energy storage
Offices
Les Loges-en-Josas, Île-de-France, France
Paris, France
Austin, Texas, United States
Wilmington, Delaware, United States
Business model
industrial equipment sales
heat-as-a-service
dedicated lease contracts
heat supply contracts
energy flexibility / arbitrage value capture
Funding
Stage
Series A / active Wefunder community round
Total raised
$9M
Latest round
Community round / Wefunder · Jun 2026
Latest amount
$2.9M
Jun 2026
Mar 2024 · Daphni, Eren Groupe, Polytechnique Ventures
Apr 2021
Jan 2017 · Y Combinator
People & investors
Work & culture
Mission-driven, deep-tech, and engineering-heavy; public materials emphasize a PhD-led team, fast prototyping, multidisciplinary collaboration, and recruiting exceptional mechanical engineers.
Product & market
Pricing
Project-based industrial equipment plus lease / heat-supply contracts; savings and grid-flex value help offset higher upfront CAPEX.
Differentiators
- —Up to 550°C output for industrial heat
- —Hybrid switching between electricity and gas based on cost and carbon intensity
- —Containerized plug-and-play integration with existing steam networks
- —Up to 86% of Carnot efficiency
- —No refrigerants and no high-temperature sliding/rotating seals
- —Claimed 5x lower maintenance
- —Potential revenue from grid flexibility and demand-side response
Technology
3DEXPERIENCE
ANSYS Fluent
ANSYS Mechanical
Node.js
Docker
React
C++
Python
FreeFEM
Tanatloc
Customers
food processing companies
mining companies
chemical manufacturers
breweries
paper manufacturers
food and beverage plants
minerals processing plants
glass and cement plants
Competitors
gas boilers
resistive electric boilers
conventional industrial heat pumps
fossil-fuel steam boilers
Scale & contact
Estimated revenue
≈$2M-$5M estimated ARR
Latest news
Kingscrowd · Mar 2026
Reviews Airthium’s 2026 crowdfunding campaign, citing a signed LOI for a paid pilot, patents, and updated fundraising/valuation details.
Dassault Systèmes blog · May 2024
Explains how Airthium uses 3DEXPERIENCE to develop its high-temperature heat pump and describes its prototype progress and target industries.
News Tank Energies · Mar 2024
Covers the same €3M financing and notes the Paris/Austin footprint, hiring plans, and 2027/2030 deployment roadmap.
GreenUnivers · Mar 2024
Reports Airthium’s €3M raise led by Daphni, Eren Groupe, and Polytechnique Ventures to accelerate its industrial heat-pump R&D.
Jobs and careers at Airthium
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