Cost of pellet heating

No one here will really be able to tell you that. It's all just crystal ball reading. It may be that 25,000 is enough, but it could also be much more expensive. There are quite different pellet heating systems, depending on how much you want to do yourself. It also depends on how many radiators need to be installed? How many meters of heating pipe? Should hot water also be produced with it? Do the pipes need to be renewed as well? Is a storage tank added? Should the pellets be filled manually or automatically? How large is the storage for the pellets? First, think carefully about what you need and then get an offer from a company so that you even have a feeling for it. Ideally, of course, two to three offers would be best. But for that, you would have to do a tender in order to compare them.