# Liebherr supplies CO2 HVAC systems to Siemens Mobility

Liebherr-Transportation is supplying CO2-based HVAC systems to Siemens Mobility for Nightjet and Railjet trains, with delivery through the first half of 2028.

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

## Companies

- [Liebherr-Transportation](https://endata.com/companies/86661.md)
- [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-us/n/liebherr-supplies-co2-air-conditioning-systems-to-siemens-mobility-187264-3782185), 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."
- [liebherr.com](https://www.liebherr.com/en-me/n/liebherr-supplies-co2-air-conditioning-systems-to-siemens-mobility-187264-8141050), 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."
- [liebherr.com](https://www.liebherr.com/tr-tr/n/liebherr-supplies-co2-air-conditioning-systems-to-siemens-mobility-187264-4400723), 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."
- [railway-international.com](https://railway-international.com/news/99262-liebherr-supplies-co2-air-conditioning-systems-to-siemens-mobility), 2025-08-19: "Liebherr-Transportation is delivering heating, ventilation and air-conditioning (HVAC) systems that use the climate-friendly natural refrigerant R744 (CO2) for the first time."

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