Wiesbaden/Taunusstein, 05.11.2025. Many are wondering: How should I get my apartment or house warm if the Building Energy Act no longer allows oil and gas heating in a few years due to environmental reasons. At the "Open Heating Cellar Day" on 15.11.2025, interested parties can look at practical solutions in many cities on site and heating pioneers can still register and present themselves (https://localzero.net/mit-machen/offener-heizungskeller#besucher). This is pointed out by the Working Group on Energy and Climate Protection of the Greens Wiesbaden (https://gruene-wiesbaden.de/mitmachen/) after an internal exchange of experience.
Heat pumps, contrary to what is often claimed, are often a viable and profitable option even in old multi-family houses, according to the AK. Stefan Klooth, a member of the working group, proves this in an almost 50-year-old house with eight apartments, in which he lives in Taunusstein and which he also manages. “It was work, but now everything is running and everyone is warm,” says Klooth. In six The investment in the plant will be amortized for up to nine years. He also presents the plant on the Internet (https://www.youtube.com/watch?v=6QWnikNH1ss).
"This is an exemplary solution," says Axel Bretzke, spokesperson for the working group and Professor aD for energy use in real estate. "Without your own knowledge or induction into the topic, a good energy consultant is indispensable as an accompaniment", continues Bretzke. The initiative of open heating cellars is therefore very helpful and he hopes that even through the Chamber of Industry and Commerce (IHK) heating pioneers will decide to show their innovative heating systems to the public on 15.11.2025.
Where district heating will be available and where the owners themselves will have to take care of a new heating depends on the heat planning of the city or municipality. In the state capital Wiesbaden, it is being developed at the Environment Agency under the green director Christiane Hinninger (https://www.wiesbaden.de/leben-in-wiesbaden/umwelt-natur-klima/klima-schutz/). In addition to district and local heating solutions, the enormous potential of heat pumps from air, surface water, geothermal energy and waste heat is highlighted there.
