Heating currently corresponds to almost half of the total global energy consumption in buildings (Francois Briens, 2023), and is being one of the main sectors affected by global warming as we are currently experiencing record breaking temperatures during the winter. At the same time the heating industry in buildings is responsible for more than 4000 mega-tons of CO2 equivalent emissions every year (IEA, 2023), and from this total around 44% correspond to residential heating (IEA, 2022). For Germany the current main sources for residential heating are natural gas (46%) and heating oil (25%), while for The Netherlands the panorama is similar with natural gas (85%), which correspond to fossil fuels.