Hotel Schlossberg, Thun

Since the 12th century, the castle has towered over the old town of Thun. In the middle of this elevated medieval complex, in what used to be the prison, Hotel Schlossberg was opened in 2014. The cooling technology discreetly integrated into the ancient walls was supplied by CTA.

Over 800 years ago, the Dukes of Zähringen built Thun Castle, Thun’s landmark, which still stands today. They never lived there—the castle served purely as a symbol of power and for representation. It is inhabited today—albeit temporarily—by those staying at Hotel Schlossberg. The former prison, with its modern inner courtyard façade and bay windows, blends gently into the historic, listed structure. Next to the hotel, in the new castle, the restaurant, conference rooms and museum were also opened in 2014. CTA supplied the room air conditioning units and cold water production for the kitchen, restaurant and conference rooms.


Technical data

  • Variable refrigerant flow (VRF) split air-conditioning units: 18 internal units and 1 external unit

  • Water-cooled chiller for indoor setup with a cooling capacity of 53.2 kW

  • Air-cooled recooler for outdoor setup

The recooler is hidden behind the wooden boarding.

The courtyard with hotel rooms (left) and restaurant (right)


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