What is a furnace coupler?
A thermocouple is a safety device that’s used to detect whether or not your furnace’s pilot light is lit. It contains a metal rod that is placed very close to your pilot light’s flame. If the pilot light goes out, the thermocouple will lose its voltage and the gas line to your furnace will be closed.
How much does it cost to replace a furnace thermocouple?
Cost to Replace a Thermocouple on a Furnace Replacing a thermocouple costs $150 to $250, mostly due to labor time. On older models without an ignitor, it checks to make sure your pilot light is lit. If it’s not, it’ll shut the gas off.
What is the purpose of a thermocouple in a gas furnace?
Thermocouples are sensors used to measure temperature. It is a device used inside a gas furnace in Kansas, to assist the pilot light in keeping your furnace running and safe. It works rather like a fail-safe to keep unburned gas from accumulating and burning, exploding or causing another type of health risk.
How long do furnace thermocouples last?
Thermocouples are rigorously tested and should last for years. Indeed, experts believe a four-year check cycle is all that is needed to make sure things are functioning properly.
How long should a gas furnace last?
approximately 15-20 years
Are furnace thermocouples universal?
Honeywell, White Rodgers, and other manufacturers make universal replacement thermocouples, usually with a 30-millivolts (mV) rating for standing-pilot furnaces. Electronic flame sensors are much less universal, and you must find the exact part specified for your furnace model.
Is a flame sensor the same as a thermocouple?
People tend to use the terms “flame sensor” and “thermocouple” interchangeably. In truth, while they basically perform the same job, they’re not the same thing. If your furnace uses an electronic controller, it’s got a flame sensor. Thermocouples are used on standing pilot furnaces that have pilot lights.
How do I stop the wind from blowing out my pilot light?
Because of a natural knowledge of many basements being drafty, a firebox is around the pilot light to prevent it from blowing out. If there are any significant gaps in your firebox, your pilot light will go out regularly. To address this, check your firebox for any significant gaps.