In today’s rapidly evolving HVAC landscape, professionals face mounting pressure to meet increasing client expectations, integrate new technologies, and deliver high-efficiency solutions—all while protecting their profit margins.This presentation explores how Hysopt, our innovative physics- and cloud-based engineering software, empowers HVAC engineers to overcome these challenges. With the rise of complex systems and sustainability demands, traditional design methods fall short—especially when incorporating new heat pump technologies (polyvalent-, reversible-, booster heat pumps) and other emerging technologies. These systems often behave less predictably under partial load and introduce more complex design decisions compared to conventional gas boilers. Hysopt addresses this increased system complexity with a system-level approach to HVAC design and optimisation. Our software enables engineers to analyse performance under partial load conditions, validate design decisions for hybrid systems, and ensure maximum efficiency, reliability, and sustainability throughout the lifecycle of an installation. Join us for a live demonstration of the Hysopt platform to see first-hand how our software streamlines engineering workflows, enhances system stability and supports smarter integration of next-generation HVAC technologies.