Article 19a of Directive 2018/844, includes the requirement for the Commission to perform, before 2020, a feasibility study to clarify the possibilities and timeline for introducing two aspects in order to improve buildings’ energy performance: - The inspection of stand-alone ventilation systems and - An optional building renovation passport. This technical study is contracted to a consortium formed by INIVE and BPIE who, together with a broad range of experts in the required fields, will provide technical support to the Directorate-General for Energy of the European Commission for investigating the different elements covered by the feasibility study. This technical study is coordinated by INIVE EEIG and runs from 18 December 2018 until 17 December 2019. The first part of this technical study will assess the relevance and feasibility to introduce EU provisions for the inspection of stand-alone ventilation systems in buildings, e.g., the development or improvement of technical standards, guidelines and practices, or the possible extension of the mandatory regular inspection requirements to stand-alone ventilation systems. The objectives are to deliver: - An analysis of the stock of ventilation systems in EU buildings, including their technical characteristics, the distribution systems and foreseen evolution of the stock; - A review of existing regulations, schemes, guidelines and standards on the inspection of ventilation systems, and other relevant initiatives and projects, in the EU, and, where relevant, in other regions; - An investigation of the relevance and feasibility of further promotion of inspections of building stand-alone ventilation systems at the EU level and an exploration of the possible approaches to this end, including nonlegislative and legislative measures, and including in relation to Articles 14- 15 EPBD. This report covers the second objective. It provides a review of existing regulations, schemes, guidelines and standards on the inspection of stand-alone ventilation systems, and other relevant initiatives and projects.