A building services system includes a ventilation device for ventilating a building and an electrotechnical device for supplying power optionally to the building or to a vehicle. The ventilation device and the electrotechnical device are designed to be con...

Disclosed herein is a cooling/heating apparatus using waste heat from a fuel cell. The cooling/heating apparatus comprises a fuel cell (50), a hydrogen modifying unit (150), a cooling/heating unit (60), and refrigerant heating units. The cooling/heating un...