Hvac Know It All Podcast

In this episode of the HVAC Know It All Podcast, host Gary McCreadie chats with Matthew Cowley, a North America Sales Manager: Spectroline Leak Detection (Industrial & HVAC/R) at Spectronics Corporation, about the truth behind internal sealants used in HVAC systems. They explain how older polymer-based sealants caused problems due to chemical reactions, while new oil-based ones work safely with mechanical action. Matthew and Gary talk about how oil-based sealants coat leak areas from the inside without clogging or damaging parts. They also share stories from real HVAC jobs, testing tips, and why more people are starting to trust this modern sealant method. Matthew Cowley explains how modern oil-based sealants are safer for HVAC systems than old polymer ones. He shares how these sealants coat tiny leaks from inside without hardening or clogging parts. Matthew talks about how they need pressure, heat, and small leak spots to work well. He also explains why these sealants don’t hide damage but help prevent b