How Long Should A Boiler Thermocouple Last in How To

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How Long Should A Boiler Thermocouple Last. Why does your pilot light not light all the time? How long do thermocouples last?

Camco RV Universal Gas Water Heater and Furnace
Camco RV Universal Gas Water Heater and Furnace from www.etrailer.com

In this scenario, thermocouple life, which should have been close to one year, was shortened to within a week. In effect, new thermocouples were installed into contaminated tubes, causing the degradation of the sensors and generating greater than a 100°f shift in accuracy. If the pilot remains lit, but the main furnace doesn’t stay lit, it’s time to replace the thermocouple.

Camco RV Universal Gas Water Heater and Furnace

Thermocouples can last several years, but they don’t typically last as long as the furnace itself. The thermocouples should last for a long time. I am often asked about troubleshooting a thermocouple on gas systems. Why does your pilot light not light all the time?