<p>Energy-efficient appliances serve as catalysts for sustainable consumption practices and the transition to a circular econ+omy, influenced by many socio-demographic and economic determinants. This study investigates the variables that shape online shopping of reused energy-efficient appliances in Greece, using an ordered logistic regression analysis based on consumers' socioeconomic characteristics and ecological awareness. A sample of 1,500 Greek consumers responded to a structured online survey, and the impact of these factors on their online purchasing intentions was assessed utilizing an ordered logistic regression model. Results demonstrate that characteristics like gender, status of marriage, and concern for the environment positively affect the online shopping for reused energy-efficient appliances. On a different note, age, income, and educational level reveal a lack of substantial influence. While economic variables seem to not affect online sustainable appliance purchases, consumers who care about ecological challenges are more likely to be involved. Aligning with SDG 12 (Responsible Consumption and Production), these findings provide insights for corporations, governmental entities, and sustainability practitioners who strive to promote circular consumption through strategic marketing approaches and evidence-based ecological intervention initiatives.</p>