ATMOsphere MAC Summit 2025 x TU Berlin
Natural refrigerants for mobile air conditioning, heat pumps, and transport refrigeration
This event has ended — thank you to everyone who joined us in Berlin.
- Date
- 23–24 September 2025
- Location
- Berlin, Germany
- Venue
- Technische Universität Berlin
About
On the agenda
- Implementation and scaling up of CO₂ and propane in mobile applications including AC and heat pump in automotive, buses, trucks, and trains
- Research & market trends
- Latest technology trends related to compressor, evaporator, condenser/gas cooler, and chiller developments
- Technology case studies: CO₂ and propane in multiple mobile applications, and transport refrigeration
- Implementation of heat and work recovery, system controls, and safety aspects, as well as architectures for reversible AC & heat pump systems
- Refrigerant charge reduction strategies and compressor lubrication
- Policy developments: PFAS restriction proposal, EU F-gas regulation, and MAC directive
- OEM presentations









Programme
- 13:30
Registration and welcome coffee
Participants are invited to the registration table to pick up their name badge upon arrival.
- 14:15
Welcome & introduction
Welcome & Introduction by Marc Chasserot, Founder & CEO of ATMOsphere, and Stefan Elbel, Professor & Head of the Chair of Heat Transfer and Heat Conversion at TU Berlin.
- 14:45Keynote
Keynote: The path to PFAS-free solutions: success stories from mobile HVAC and transport refrigeration
The presentation will set the scene and give an exclusive, in-depth look at the latest natural refrigerants-based research and technology trends across all mobile and transport refrigeration applications.
Moderator Marc Chasserot, ATMOsphere
Stefan Elbel, Professor & Head of the Chair of Heat Transfer and Heat Conversion,Technische Universität Berlin (TU) Berlin
- 15:15Session
Market trends
This session will explore how evolving regulations, environmental concerns, and technology trends are shaping refrigerant choices in light vehicles, offering a market outlook that highlights key challenges and opportunities for manufacturers.
Moderator Marc Chasserot, ATMOsphere
Matteo Martini, Associate Director, S&P Global MobilityMarket dynamics of air conditioning refrigerants: the impact of technological advancements and regulatory frameworks on light vehicle systems
- 15:45Session
Technology case studies
Case studies presented by leading OEMs and suppliers, showcasing the integration and expansion of CO₂ and propane across various applications, such as air conditioning in automotive, buses, trucks and trains.
ModeratorStefan Elbel, Technische Universität Berlin (TU) Berlin
Dr. Roman Heckt, Global Chief Engineer for natural refrigerant systems, Hanon SystemsA cleaner future with natural refrigerant MAC Systems - avoiding excessive health burdens by decreasing TFA
Carsten Wachsmuth, Thermal Management of EVs, & Johannes Schwerter, Test Engineer System and Vehicle Testing, Research and Development, Volkswagen Thermodynamic innovation: Volkswagen heat pump system with R744
- 16:30
Networking break
Coffee, tea and light snacks will be served in the sponsor exhibition area.
- 17:00Session
Technology case studies
Case studies presented by leading suppliers, showcasing the integration and expansion of CO₂ and propane across various applications, such as air conditioning in automotive, buses, trucks and trains.
ModeratorThomas Meyer, Technische Universität Berlin (TU) Berlin
Karsten Mundt, Sales Director International - Division Bus, Konvekta, & Giacomo Pisano, CO₂ Compressors Business Development Manager, DorinActive refrigerant charge balancing and novel compression technology: how to boost electrified bus autonomy
Paul van Rooijen, Sales Director, Aurora Netherlands R290 heatpump HVAC system for electric bus
Gabriel Greussing, Test Engineer and Project Manager, Obrist EngineeringR290 MAC – risk in a risky world
Kirsten Orschulok, Project lead – Greener Reefer project, Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ), & Santiago Martinez, Laboratory Manager & Core Refrigeration Lead, Thermo KingGreener Reefers: Progress and technical status of the R290 proof of concept of reefer
- 18:00Session
PFAS: Essential chemicals or replaceable risk?
The presentation will provide chemical background on PFAS and highlight their phase-out in different industry sectors
ModeratorStefan Elbel, Technische Universität Berlin (TU) Berlin
Sebastian Riedel, Professor, Freie Universität Berlin, & Founding Director, Center for Sustainable Resources (CSRBerlin)
- 18:30
Networking drinks
Participants are invited to join us for some networking drinks in the sponsor exhibition area.
Speakers
Venue
Technische Universität Berlin
Institut für Architektur, Str. des 17. Juni 152, 10623 Berlin, Germany
Berlin, Germany
Announcements

Key highlights
What an impactful two days at ATMO MAC Summit x TU Berlin this week! Together with TU Berlin, we welcomed leading experts, innovators, and decision-makers to dive deep into the future of natural refrigerants for mobile air conditioning, heat pumps, and transport refrigeration. A huge THANK YOU to our sponsors, speakers, and attendees from 70 organisations for their contribution and support…
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One week to go – secure your pass today!
Seize the opportunity to join 55+ leading confirmed organisations at ATMO MAC Summit x TU Berlin . Explore a programme packed with cutting-edge cooling and heat pumping solutions for mobile applications and transport refrigeration. Gain valuable insights on optimal thermal management for EVs, stay ahead with key policy updates, and discover the latest technology and market trends. Haven’t registered yet? There’s still time…
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FINAL PROGRAMME
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Hosted ATMO Europe 2025 site visit to SCM Frigo’s facilities in Padova!
What’s included A guided tour of SCM Frigo’s manufacturing site, with a close look at their CO₂ transcritical refrigeration solutions and production processes. Attendees will also visit the Beijer Ref Academy for an overview of their training and sustainability initiatives. Site visit schedule, 25 November: Transportation by bus is provided at no extra cost. Registration To…
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New presentations this week!
ATMOsphere MAC Summit x TU Berlin updates: This week, we’re highlighting new presentations and are delighted to welcome our latest speakers. PFAS: Essential chemicals or replaceable risk? The presentation will provide chemical background on PFAS and highlight their phase-out in different industry sectors, offering perspectives relevant to heating and cooling systems. Sebastian Riedel, Professor, Freie Universität Berlin, & Founding Director, Center…
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This week’s new presentation announcements
See the latest confirmed cases studies to be presented ATMO MAC Summit x TU Berlin next month! Eric Laurenz, Product Manager for Refrigerant Safety, Fraunhofer Institute for Solar Energy Systems I Locked up tight – Lessons learned from an innovative sorption based safety concept for R290 refrigerant circuits Transport refrigeration We’re also pleased to announce that Thermo King will join Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) to…
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Presentation by Ford-Werke I List of organisations attending
New presentation by Ford We’re extremely pleased to announce that Bernd Dienhart,Climate Attribute Engineer at Ford-Werke, will be presenting at ATMOsphere MAC Summit x TU Berlin on: Alternative refrigerants in the automobile industry. He’s joining our fantastic line-up of speakers already confirmed on the agenda, which can be viewed here. List of organisations attending The conference will be packed with networking opportunities to…
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Presentation by Volkswagen
New presentation Thermodynamic innovation: Volkswagen heat pump system with R744 We’re delighted to welcome Volkswagen back to ATMO MAC Summit x TU Berlin, where they will present on their CO₂ heat pump system. Joining us are esteemed speakers: Carsten Wachsmuth,, Thermal Management of EVs, Research and Development, Volkswagen Johannes Schwerter, Test Engineer System and Vehicle Testing, Research and Development, Volkswagen Don’t miss out – register…
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Meet our first policy panelists
We’re pleased to announce two new additions to the ATMO MAC Summit x TU Berlin speaker lineup! The session will address the latest policy developments — including the PFAS restriction proposal, the EU F-gas Regulation, and the MAC Directive — and explore how these changes are shaping the future of the industry. Arno Kaschl, Senior Policy Officer, DG CLIMA,…
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Meet our latest speakers
Today we’re introducing the newest additions to the ATMO MAC Summit x TU Berlinspeaker lineup! They will share real-life examples, outcomes of their work, and key lessons learned from their experience. Sebastian Wappler, Head of Product Platform Development, thyssenkrupp Dynamic Components | A/C compressor designed for R744: high performance in environmental conditions Zhou Yi, Chief Technology Officer, Shanghai Highly Electrical Appliances | Practice and outlook on natural…
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New speakers announced!
Keynote Kicking off the ATMO MAC Summit x TU Berlin programme, Stefan Elbel will deliver an in-depth look at the latest research and technological advancements in natural refrigerants across all mobile applications. His keynote will set the tone for two days of high-level discussions and forward-looking insights. Stefan Elbel, Professor for Heat Transfer and Energy Conversion, Technische Universität Berlin (TU) Berlin New…
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Market dynamics of air conditioning refrigerants
Market dynamics of air conditioning refrigerantsThe impact of technological advancements and regulatory frameworks on light vehicle systems. As the automotive industry increasingly responds to environmental and health concerns around per- and polyfluoroalkyl substances (PFAS), there is a shift toward the adoption of natural refrigerants for AC systems. This transition is accelerating with the rise of electric…
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Welcome first speakers and our partners!
We are delighted to introduce the first speakers at ATMOsphere MAC Summit 2025 x TU Berlin, taking place on 23-24 September 2025 in Berlin. Mobile air conditioning Dr. Roman Heckt, Global Chief Engineer for natural refrigerant systems, Hanon Systems |Cleaner future by MACs with natural refrigerants – Avoid excessive health burden by increasing TFA emissions. Laurent Descourtieux,Business Development Manager, FIVES FILLING &…
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Our Platinum Sponsor, Hanon Systems!
WELCOME TO OUR PLATINUM SPONSOR We are proud to welcome Hanon Systems as the Platinum Sponsor of ATMOsphere MAC Summit 2025, taking place in partnership with TU Berlin‘s Chair of Heat Transfer and Heat Conversion. Hanon Systems, founded in 1986, is a global leader in thermal energy management solutions. In January 2025, it became a subsidiary of Hankook &…
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Early Bird: last chance!
Those are the last days, before 18 April, to benefit from the Early Bird offer on your ATMOsphere MAC Summit pass and receive a discount of up to 150€. The conference will offer a unique opportunity to network with industry stakeholders including OEMs from the automotive, bus, truck and train sectors, suppliers, policy makers, academics, and researchers. Forge new business connections and gain insights from top…
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Call for case studies
You’re invited to submit your technology case studies showcasing natural refrigerants for ATMOsphere MAC Summit 2025 x TU Berlin! We are looking for case studies by OEMs and suppliers from the automotive, bus, truck and train sectors. Ensure that your submission is relevant to the market being addressed by the conference, and includes real-life applications. …
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Early Bird Offer!
Registration for ATMOsphere MAC Summit xTU Berlin is open! Take full advantage of our EARLY BIRD offer and save 150€ on your pass, joining us and key industry stakeholders on 23-24 September in Berlin.Expect an enriching programme featuring cutting-edge cooling and heat pumping solutions for mobile applications and transport refrigeration. Gain valuable insights from presentations on optimal thermal management for EVs, key policy updates, and the latest…
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Save the Date!
We are thrilled to announce that the second edition of ATMOsphere MAC Summit, in partnership with Technische Universität Berlin, will take place on 23-24 September in Berlin! Join top industry experts, policymakers, and researchers for an exclusive event on advancing natural refrigerant technologies in mobile applications. The programme will highlight research trends, market insights, real-world case studies, and…
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