In this episode of the Advanced Refrigeration Podcast, host Kevin Compass and his co-host discuss the challenges and chaos they've faced while dealing with CO2 case controllers. They delve into issues such as overcrowded comm loops, programming nightmares, and the physical hassle of tracing and addressing numerous case controllers. They also share their frustrations with manufacturers' suboptimal setups, including poorly placed case controllers and the challenges of redesigning comm loops. The conversation shifts to discuss the importance of accurate sensor calibration and the right way to use pressure transducers. They recount experiences from training sessions aimed at elevating HVAC technicians' skills, emphasizing the need for proper system set-up to prevent inefficiencies and failures. Despite the technical focus, the episode is sprinkled with humor and frustration, reflecting the hosts' real-world experiences in the challenging field of refrigeration