Hvac Know It All Podcast

In part 2 of this episode of the HVAC Know It All Podcast, host Gary McCreadie continues his conversation with Jason Esteves, General Manager Americas at Seitron Americas Inc. They explore advanced concepts in combustion analysis, focusing on detecting cracked heat exchangers using oxygen changes and carbon monoxide levels. Jason explains why even a half percent shift in oxygen can signal serious issues and breaks down how combustion behaves in low-fire conditions. The discussion includes real-world examples, challenges with equipment startups, and tips for using analyzers like the NOVO. They also cover practical steps to update the analyzer's firmware for added features. Gary and Jason dive into the real process of spotting cracked heat exchangers using oxygen levels and CO readings. Jason explains how even a small shift in oxygen can mean a big issue and why looking at both O2 and CO is key. They talk through examples from real service calls and explain how low gas flow affects combustion readings. Jason sh