Assume you own a flat in a larger house with floor heating in Germany and your gas heating breaks down in 2024.

Now a new gas heating is not possible because a new heating requires to be 65% "renewable" by the new law.

If you own the complete house you can either use photovoltaic for that or insulate your house, replace the radiators and use a heat pump.

If you only own one flat, this is more difficult:

  • Are there exceptions for that?
  • Or is the community of owners obliged to build a photovoltaic, insulate the house, ... ?
  • Or is the owner of the flat just out of luck and relies on the goodwill of the community of owners?
  • 1
    Larger residential houses usually have one boiler in the basement heating all the units. Does this hypothetical case assume that every unit has its own boiler?
    – Philipp
    Jul 8, 2022 at 10:56
  • Floor heating can be repaired or replaced.
    – Trish
    Jul 8, 2022 at 11:30
  • 1
    @Trish Where do you have this information from? Repairing will be fine, but replacing will require 65% renewable energy. Jul 8, 2022 at 11:38
  • 2
    Is 2024 a typo? If not, who can say what the legislation would be in 18 month's time? It could be that the 65% "new law" requirement is increased, reduced or even repealed in its entirety. The future is by no means certain.
    – user35069
    Jul 8, 2022 at 11:55
  • 1
    @Rick This is not a typo, but a recently passed law coming in effect January 1st 2024, and that is not a "distant future". Jul 8, 2022 at 12:01

1 Answer 1


AFAIK, the new regulation isn't law yet. Currently there is only a concept by the Ministry of Commerce and Climate Protection: https://www.bmwk.de/Redaktion/DE/Downloads/Energie/65-prozent-erneuerbare-energien-beim-einbau-von-neuen-heizungen-ab-2024.pdf

Your case is handled on page 9. When the first heater in the house breaks, the house owners (all appartment owners, Eigentümergemeinschaft) would have three years to decide how they intent to replace the old systems and then they would have an additional three years to replace all heating systems in the house with a heater that fulfills the requirement (preferably a central heating system). Meanwhile, you could replace your heater without the 65 % renewables requirement.

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