The team shows what happens when copper pipes are heated without protection – the thermal conductivity causes dangerous heat transfer that can burn through materials and create system failures. Then they demonstrate the solution: wet rag heat-blocking putty that effectively stops heat transfer and protects sensitive components.

This demonstration is especially important when working with dissimilar metals like copper and aluminum connections, where aluminum’s lower melting point makes heat protection crucial to prevent bond failure and system leaks.

Key takeaways:

• Understanding thermal conductivity in copper piping
• Protecting heat-sensitive HVAC components during brazing
• Proper application of heat-blocking putty
• Working safely with dissimilar metals
• Preventing system damage during installation and repair