Buildings consume a significant portion of the world's overall electricity consumptionand it is critical for people's well-being and performance to have a good indoor climate. This is projected to rise as living conditions improve and climate change occurs. This means that energy-efficient interior climate systems are critical, and it is a worthwhile topic to research. This Master Thesis is focused on the topic of indoor climate and how user experience design can improve efficiency and sustainability in the commissioning process. In addition to being a topic that is not much explored, the longer it takes to install wireless systems, the more expensive and more harmful it is to construction sites. The aim of this study was to identify challenges that users face during the commissioning process. Another aim of this research was to investigate what are the improvement opportunities in the indoor climate commissioning process. The final aim of this study is an artifact that has been created with suggested actions that address the identified challenges that users encounter during the commissioning process. The methods chosen for this research will be a combination of qualitative and quantitative research, known as a mixed-method approach. This approach will be used to obtain answers to the study's research questions. The outcome of the survey and interviews with employees who have participated in the commissioning processsomehow will enable us to answer the research questions. The project includes, for example, user studies, technical studies, and the development of new concepts.