DIN EN 16798-3:2026-10

Performance requirements for ventilation and air conditioning systems in non-residential buildings

DIN EN 16798-3 specifies performance requirements for ventilation and air conditioning systems as well as room conditioning systems in non-residential buildings. It supports the planning, design, assessment and energy-efficient operation of systems intended to ensure a comfortable and healthy indoor environment. The standard is part of the series of standards for the energy performance assessment of buildings and defines requirements for air quality, energy efficiency, heat recovery, filtration and system performance.

What is DIN EN 16798-3 about?

The standard specifies performance requirements for ventilation and air conditioning systems as well as room conditioning systems in non-residential buildings. It describes requirements for indoor air quality, energy efficiency, air flow rates, filtration, heat recovery and system operation, thereby supporting the planning, design and assessment of energy-efficient systems.

Topics covered

• Performance requirements for ventilation and air conditioning systems
• Indoor air quality and indoor climate
• Air flow rates and ventilation effectiveness
• Filtration and air classification
• Heat recovery and energy efficiency
• Control, monitoring and operation of systems
• Energy performance assessment of non-residential buildings

Practical relevance

Ventilation and air conditioning systems make a key contribution to the energy efficiency of buildings as well as to the health, comfort and productivity of building users. DIN EN 16798-3 provides a uniform basis for the planning, design and assessment of systems in non-residential buildings and helps align requirements for indoor air quality and energy efficiency. At the same time, the standard serves as an important basis for implementing European requirements for the overall energy performance of buildings.

Changes compared with DIN EN 16798-3:2017-11

The standard has been comprehensively revised. In particular, the design and calculation aspects have been restructured. Requirements for filtration, heat recovery and energy efficiency have also been updated. New definitions for systems and specific fan power (SFP) have been added, along with an additional annex containing further design aspects. In addition, the new edition allows for the inclusion of a normative national annex.

Target group

• Specialist planners for building services engineering
• Engineers for ventilation and air conditioning technology
• Architects
• Operators and owners of non-residential buildings
• Manufacturers of ventilation and air conditioning systems
• Energy consultants and auditors
• Authorities and bodies responsible for the energy performance assessment of buildings

This document replaces DIN EN 16798-3:2017-11 .