Actually, what does the thermocouple do on a furnace?
If your heater starts acting up, you might find yourself wondering what does the thermocouple do on a furnace and whether it's the reason your house feels like a walk-in freezer. Most of us don't really think about the internal components of our HVAC systems until something goes wrong, but this tiny little part is actually one of the most important safety features in your entire home. It's a small, copper-colored rod that sits right in the path of your pilot light, and while it looks pretty simple, it's doing a massive job every single second your furnace is running. ...