Co2 Trans-critical Kevin talks about trans critical Co2 I ask questions and look pretty.. Join hosts Brett Wetzel and Kevin Compass in this comical yet informative episode of the Advanced Refrigeration Podcast. This week, they dive into the intricacies of trans-critical CO2 systems, covering everything from compressor changes to managing oil levels, along with preparations for big retrofits. Expect laugh-out-loud moments like Kevin's unexpected oil shower and a rookie recording mishap. They also delve into the nitty-gritty of controlling CO2 pressures, tuning case controllers, and optimizing system efficiency. Whether it's dealing with tuning PID loops, navigating various case controller algorithms, or facing amusing tech blunders, this episode is packed with both humor and valuable insights for HVAC professionals. Perfect for anyone who's ever fixed a refrigeration system or just loves a good laugh!