Pool heating, solar absorber, Ripp pipe system and the efficient use of solar energy – in this article I document the complete conversion of my old EPDM pool heating system into a modern Dolphi-Ripp solar heating system. After more than ten years of practical experience with EPDM mats, I will show you why the change was necessary, which system is convincing today and how the new solar-based pool heating is proving itself in everyday life. Step by step, I describe the planning, installation and initial results – including technical details, comparisons and practical tips for installing a solar absorber on the roof.