GEG 2024 - Requirements for the system technology


Lecture: GEG 2024 - Requirements for the system technology when replacing the heat generator - theory and practice

Speaker: M.Sc. Martin Kleegraf, IMI Hydronic Engineering Deutschland GmbH


The Building Energy Act (GEG) requires the majority of existing buildings in Germany to be refurbished, as the heating of buildings should be climate-neutral in the future. There are minimum requirements, refurbishment deadlines and also funding opportunities. In view of this complexity, many property owners and system operators are asking themselves the question of feasibility and cost-effectiveness. The seminar shows both the requirements and possible solutions. We also present an overview of the funding options.



  •     The current GEG 2024
        - Requirements when replacing a heat generator, transition periods
        - Obligation to optimize existing systems


  • Funding opportunities and requirements
    - New federal funding, efficient buildings, from 2024

  • Examples of implementation
    - Use of heat pumps, solar thermal energy, local and district heating
    - Hydraulic integration of new heat generators in existing systems
  • Simple, efficient hydronic balancing of the old system
    - in two-pipe systems
    - in single-pipe systems (incl. design example)
  • Hydraulic balancing with the IMI Heimeier "EasyPlan" software.
  • Proof of hydronic balancing in accordance with VdZ procedure B, including the necessary documentation.


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Date:                   Wednesday, April 17., 2024, 16:30 bis 19:00 Uhr

Venue:                 HAUS DER TECHNIK e.V., Hollestraße. 1, 45127 Essen, Raum 901

via zoom *:

Admission is free. Guests are very welcome.  Registration is not required.



*  Note:

The event will take place in hybrid form and will therefore be streamed live online (Art. 6 para. 1 lit. f GDPR). Speeches and on-site participation may result in participants also being seen by online participants. Recording is not intended. Participants' data will be used to organize the event and to contact them afterwards. If you do not wish to be contacted or receive any further information, please let us know. If you have any questions about data protection, please do not hesitate to contact us.