The SN 546384-4:2025 standard provides guidelines for the design and operation of cooling installations in buildings, published by the Swiss Society of Engineers and Architects (SIA). It emphasizes energy efficiency and climate-friendly practices.

Purpose and objectives

The primary purpose of the SIA 384/4:2025 energy efficiency standards is to establish a framework for the design, implementation, and operation of cooling installations in buildings. The standard aims to promote efficient energy usage, minimize environmental impact, and ensure compliance with relevant climate protection regulations. By providing a set of performance requirements, the standard guides professionals in creating sustainable cooling solutions that balance comfort and energy efficiency. Ultimately, the objective is to enhance the overall effectiveness of cooling systems, contributing to reduced energy demand and better building performance.

Scope: who must comply

The SIA 384/4:2025 standard applies to a broad range of stakeholders involved in the construction and operation of buildings, including:

• Architects and Engineers: Responsible for designing cooling systems that align with energy efficiency guidelines.
• Building Owners and Operators: Must ensure that their cooling installations comply with the specified performance requirements.
• Contractors and Installers: Required to implement the standard's recommendations during installation.

Typical industries affected by this standard include commercial buildings, residential complexes, and industrial facilities, all of which must adhere to the construction materials and building regulations set forth in the standard to promote sustainability and compliance with energy efficiency mandates.

How SN 546384-4:2025 relates to other standards

The SIA 384/4:2025 standard is part of a broader framework of energy efficiency standards, which includes:

• ISO 50001: This international standard focuses on energy management systems, providing organizations with a structured approach to improving energy efficiency.
• EN 15232: This standard pertains to the energy performance of buildings, specifically addressing the impact of building automation and control systems on energy efficiency.
• SIA 384/1: A complementary standard that outlines general principles for energy efficiency in building technology, setting the stage for cooling installations.

Revision history and current status

The SIA 384/4:2025 standard was published by the Swiss Society of Engineers and Architects in 2025. The current revision has introduced several updates to performance requirements and compliance guidelines to reflect advancements in cooling technology and sustainability practices. Key changes include enhanced energy demand calculations and updated acoustic requirements to better align with modern building regulations aimed at improving the overall efficiency and effectiveness of cooling installations.