The European Community has introduced several directives and initiatives to promote the digitalization of buildings, aiming to improve energy efficiency and reduce carbon emissions. Key points include the Energy Performance of Buildings Directive (EPBD). Buildings must use less energy, be powered as much as possible by renewable sources, and reduce carbon emissions. Other key points are the ‘Green Homes’ directive 2024/1275/UE (EPBD IV), which requires residential buildings to reduce the average primary energy consumption by 16% by 2030 and by 20–22% by 2035. Additionally, by 2050, buildings must achieve zero fossil fuel emissions. These initiatives aim to create more sustainable buildings and reduce the environmental impact of the construction sector. The European Community has also adopted several measures to promote the use of Building Information Modeling (BIM) in the construction sector. Key references include the Public Procurement Directive (2014/24/EU), which invites Member States to encourage, specify, or mandate the use of BIM for publicly funded projects and works. The goal is to improve efficiency and transparency in construction processes. The ISO 19650 international standards provide a framework for information management throughout the lifecycle of a built asset using BIM. Finally, national initiatives in several European countries have already implemented specific regulations for the adoption of BIM (for ex-ample, the United Kingdom, the Netherlands, Denmark, Finland, Norway and Italy including have introduced legislative requirements mandating the use of BIM for certain projects). The purpose of this work is to analyze the use of open BIM for the management and verification of HVAC systems.