DIN 4109-36:2026-09 - Draft

What is DIN 4109-36 about?

DIN 4109 is the central series of standards for sound insulation in buildings. Depending on the part, it covers requirements, calculation-based verification methods or technical principles for the acoustic planning and assessment of buildings.

DIN 4109-36 contains data and verification principles for building services systems and supports the acoustic planning of systems used in technical building equipment (TBE). It provides characteristic values, guidance and verification procedures for assessing noise from technical systems and complements the calculation-based verifications according to DIN 4109-2.

What content does the standard cover?

DIN 4109-36 describes verification procedures, planning principles and acoustic characteristic values for various areas of building services engineering. It takes into account sanitary installations, ventilation and air-conditioning systems, and other technical equipment.

Topics covered at a glance:

• Sound insulation of building services systems and technical building equipment (TBE)
• Calculation-based verifications and building acoustics verification procedures
• Sanitary installations and drinking water installations
• Wastewater systems and installation systems
• Ventilation and air-conditioning systems
• Airborne and structure-borne sound transmission from technical systems
• Standard installation walls for sound insulation verifications
• Information on heat pumps, lifts, ventilation, refrigeration and heavy-current systems

Why is the standard relevant in practice?

DIN 4109-36 supports planners, building physicists and TBE specialists in carrying out sound insulation verifications for building services systems. It helps assess noise from sanitary, ventilation and supply systems as early as the planning phase and define suitable sound insulation measures.

The specifications on airborne and structure-borne sound, standard installation walls and calculation-based verifications for sanitary and ventilation systems are particularly relevant. The standard therefore forms an important basis for the acoustic design of modern building services.

What changes have been made compared with the previous edition?

Compared with DIN 4109-36:2016-07, the draft has been extensively revised. The most important changes include:

• Introduction and description of the procedure for calculation-based verifications of building services systems
• Retention and updating of the previous verification methods using standard installation walls and building acoustics measurements
• Revision of the provisions for ventilation and air-conditioning systems
• Transfer of the previous guidance on ventilation and air-conditioning systems into a separate normative section
• Updating of normative references and technical principles
• Editorial revision of the document

Target audience

• Architects
• Civil engineers
• Specialist planners for technical building equipment (TBE)
• Specialist planners for building physics and acoustics

• Sound insulation experts
• Inspection engineers
• Planning and engineering offices in building construction

Supplementary standards in the DIN 4109 series

For holistic planning of structural sound insulation, further parts of the DIN 4109 series may be relevant depending on the application. These include requirements for sound insulation, calculation-based verifications and component catalogues for solid construction, timber, lightweight and drywall construction, as well as further verifications for different building components and structures.