INNOVRET addressed the training and up-skilling needs of installers and maintenance personnel in the world of work in heat pump systems. This was achieved by:• Leveraging experience in online learning and pedagogical models from previous projects.• Applying these proven methodologies to the online training of heat pump systems in the state of the art online energy laboratory.• Developing industry relevant content and case studies.• Developing industry relevant loading scenarios for heat pumps in the online training facility using live and archived data (from the data points collected daily throughout the college).• Validating the content with end users.• Disseminating and commercially exploiting the findings.