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Energy efficiency retrofitting of existing buildings (EEREB) is critical to combating climate change. While policy interventions that seek to encourage widespread EEREB adoption benefit from a deeper understanding of public retrofit decision behaviour, studies that comprehensively evaluate the general public's sentiments towards EEREB are lacking, contributing to a lack of understanding of the public's needs, concerns and views. This study aims to evaluate the general public's needs, concerns and views about EEREB. A total of 3,306 data of the general public's views were collected from the social media platform YouTube, pre-processed and analyzed using the Model-based clustering and a text mining technique. Results showed nine areas of public concerns: ventilation, energy efficiency, indoor environment quality, comfort and occupant behaviour, cost involved, community engagement, technology use, implementation knowledge, and social impact. The general intention to re

Energy efficiencyXisting buildings stockSentiment analysisSocial media