EVS-EN 16798-3:2025

EN 16798-3 applies to the design, energy performance of buildings and implementation of ventilation, air conditioning and room conditioning systems for non-residential buildings intended for human occupancy. It excludes applications like industrial processes and focuses on the definitions of the various parameters that are relevant for the systems.

The guidance for design given in EN 16798-3 and accompanying CEN/TR 16798-4 are mainly applicable to mechanical supply and exhaust ventilation systems. Natural ventilation systems or natural parts of hybrid ventilation systems are not covered by this standard. Applications for residential ventilation are also not covered. Performance of ventilation systems in residential buildings is covered in EN 15665 and CEN/TR 14788.

The classification uses different categories. For some values, examples are given and, for requirements, typical ranges with default values are presented. The default values are given in Annex B and a template for national specification is given in Annex A. It is important that the classification is always appropriate to the type of building and its intended use, and that the basis of the classification is explained if the examples given in EN 16798-3 are not used.