Resideo Q340A1074 24" Thermocouple 30mV

The Resideo Q340A1074 Thermocouple is a vital safety component found in gas-fired heating systems, typically furnaces and boilers, and weighs a mere 0.13 pounds. This 24-inch long wire acts like a temperature sensor. The tip of the thermocouple is placed in the flame. Heat from the flame creates a small voltage signal (26-32 millivolts) due to the difference in temperature between the tip and the base of the thermocouple. This signal is sent to the gas control valve, ensuring it receives the correct voltage to regulate gas flow and maintain safe and efficient burner operation. If your furnace is malfunctioning or experiencing issues with gas flow, a faulty thermocouple could be the culprit. Replacing it with the Resideo Q340A1074 can restore proper gas flow regulation and ensure safe and efficient heating performance.