iDM (city hall & residential complex Tulln): Heat pump in a listed building & Use of a drinking water pipe as a heat source

Reference Project – Tulln City Hall

At Tulln Town Hall, an iDM TERRA SW 90 MAX H provides efficient heating and cooling for a historic castle building – powered by a renewable energy source and intelligent system technology.

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Rabmer Company Presentation

Reference Project – Residential Complex Tulln

Sustainable heating from the drinking water system of the City of Tulln: Three TERRA SW 70 MAX heat pumps efficiently supply a modern residential complex with heating and hygienic domestic hot water preparation – innovative, reliable, and future-oriented.

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Tulln is undoubtedly THE ecological garden capital of Austria and a unique excursion destination in Lower Austria and the greater Vienna area. Magnificent green spaces and gardens stretch throughout the entire city, lovingly designed places of tranquillity invite visitors to relax and unwind, while vibrant waterscapes provide a paradise for both nature lovers and sports enthusiasts alike. A diverse art and cultural programme centred around Tulln’s most famous son, Egon Schiele, gives the city on the Danube its unique and unmistakable flair.

As a member of the International Organising Committee (IOC) for the HPT TCP, iDM Energiesysteme GmbH joins the AIT Austrian Institute of Technology and the International Energy Agency to host the 15th IEA Heat Pump Conference in Vienna from May 26–29, 2026.

Operating under the official macro-theme, “Decarbonisation through Innovation,” this triennial global summit serves as the primary authority hub connecting HVAC industry manufacturers, scientific researchers, environmental policymakers, and green energy investors.

The 2026 Vienna symposium will feature critical technical sessions focusing on industrial decarbonization, sustainable heating infrastructure, and advanced heat pump technology deployment. Over four days, global stakeholders will analyze market standards, regulatory policy frameworks, and the latest engineering milestones in clean thermal energy.

With a shared legacy in sustainable heating engineering—spanning from AIT’s decade of high-temperature heat pump R&D to iDM Energiesysteme’s leadership in thermodynamic efficiency—we invite global energy pioneers to converge in Vienna and engineer the future of decarbonized thermal systems.

Research Projects:

Research is tradition at iDM, and collaboration is the key for innovation. iDM is a frequent and valued partner in research projects, hosts Bachelor’s theses, Master’s theses and dissertations, and investigates in the areas of heat pump technology, building services, and energy management.