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Feb 10, 2026 4 min

The Old Reliable Thermocouple

from HVAC Mentors Podcast Hosted by Mike Plezia

In a standing pilot gas powered heating or cooking system a thermocouple is an essential part of equipment safety by making sure gas only flows when a flame is present. But how does it actually work? How is a different from a thermopile or a flame rod?

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The Old Reliable Thermocouple

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