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How it works with heat pumps

Successful practical examples of the heating turnaround

12.02.2025

Source: German Environment Agency

Heat pumps are not only efficient in new builds, but are also a climate-friendly alternative in existing buildings.

The "How it works with heat pumps" platform showcases successful projects from all over Germany and offers solutions for typical retrofitting challenges.

Focal points of the platform

  • Building types: Use in old buildings, apartment buildings, listed buildings or gas-fired floor heating systems.
  • Heat sources: Use of innovative or combined heat sources such as waste water or waste heat.
  • Planning & technology: Optimization of sound planning, use of natural refrigerants or use for building cooling.
  • Financing & cost-effectiveness: Models such as contracting or operational optimization to reduce costs.

Interested parties can search for suitable examples of best practice or enter their own project to share their experiences. New projects are published on an ongoing basis - it's worth visiting regularly!

Further information can be found here: How heat pumps work! | Federal Environment Agency