# Liebherr to supply CO2 HVAC systems to Siemens Mobility

Liebherr-Transportation will supply heating, ventilation and air-conditioning systems using natural refrigerant R744 (CO2) to Siemens Mobility for Nightjet and Railjet trains of ÖBB. Deliveries will occur through the first half of 2028.

- Type: Contract
- Announced: 2025-08-18
- Where: Austria
- Status: announced
- Products: CO2 HVAC systems, rolling stock air-conditioning
- Sectors: [HVAC and Industrial Refrigeration](https://endata.com/sectors/hvac-refrigeration.md)

## Companies

- [Siemens Mobility](https://endata.com/companies/8666.md) (customer)
- [ÖBB](https://endata.com/companies/16675.md) (customer)
- [Liebherr-Transportation](https://endata.com/companies/86661.md) (supplier)

## Sources

- [liebherr.com](https://www.liebherr.com/en-in/n/liebherr-supplies-co2-air-conditioning-systems-to-siemens-mobility-187264-4330291), 2025-08-18: "We are very proud to be one of the pioneers in Europe with our product solution and to be able to contribute significantly to more environmental-friendly passenger transportation."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.