Ecologically built house with wooden facade - Features

Yes, you are of course right: it always requires some planning and of course also money. But: if a house from 1983 is currently not suitable for a heat pump, that is called a "renovation backlog." The place would have needed a new roof, new windows, basement ceiling insulation, and perhaps also facade insulation by now even without heat pump technology. So you cannot blame the heat pump for that part. Once all that is done, the radiators can also stay and the switch to a heat pump costs €12,000, of which 35-50% is subsidized.

Very few realize that an old building needs €3-4 per sqm per month in renovation reserves. And if these reserves do not exist, the resident simply could not afford to live in the house. Long before the heating renovation is due. I know that this is quite hard for many (mostly old) people. The heat pump and climate change are not to blame for that.

Very few people realize that an old building needs 3-4 euros/sqm and month for renovation reserves. And if these reserves do not exist, the resident simply could not afford to live in the house.

Wise words, but the cruise ships are full of these people. Repairs are made to the house only when something is broken. The current builders will be the same and will not let every "newfangled thing" be installed just so the heirs do not inherit a renovation backlog. I would have it calculated whether low-temperature radiators as a replacement would not allow the operation of a heat pump. That is less pollution than a new underfloor heating system.

I am torn - do I feel sorry for people on cruise ships or not... ;-)

Regarding underfloor heating vs. radiators: I guess it rarely pays off to install underfloor heating. I did it anyway and am very glad I did. The comfort of a (unfortunately only slightly) warm floor, the extra space, and the look that screams "new build" were worth it to me. But actually, I only did it because the subsidies are so great and because one of the two floors had to be completely renovated anyway.

Very few realize that an old building needs 3-4 euros/sqm per month for renovation reserves.

hm.........

for example in Wilhelmshaven [with] average cold rent: 6.42 € per sqm - so probably 8 €/sqm in new buildings and 5 €/sqm in old buildings - there is then not much left for the landlord of the old apartments - if it really NEEDS that :oops:

On average, a landlord in Germany earns a 5% return. And that's only because corrupt large corporations live in entire apartment blocks until they are dilapidated, so that the state steps in and renovates the buildings. So yes. Renting out is usually not profitable. Additionally, apartments are cheaper than houses (because you only need a quarter of the heating) and of course, far too little is invested because the tenant pays for the oil. This will come back to bite many in the next 10 years.

I just got warned here again for something. Probably because I mentioned three names of people/institutions. I don’t post links, don’t recommend products, and don’t do advertising otherwise. But if you’re not even allowed to name sources for your claims, it’s getting ridiculous. "That’s how it is, but I won’t tell you why!" Sorry for the OT, but this warning without explanation or indication of the problem pisses me off. If I leave soon, it was nice with you! ;-)