As the HVAC industry pivots toward low-Global Warming Potential (GWP) refrigerants, centrifugal compressor design faces a new era of challenges. These eco-friendly fluids bring unique thermodynamic behaviors, demanding precise engineering to maintain efficiency and reliability. In this blog, we explore how structured hexahedral meshing—powered by GridPro—enables high-fidelity CFD simulations that capture real-gas effects, resolve complex flow structures, and accelerate design iterations. From impeller blade tip leakage to diffuser flow separation, discover how advanced meshing strategies are helping engineers create future-ready, high-performance compressors for next-generation heat pumps.