A thermocouple is a temperature sensor that is versatile, durable and cost-effective. It works efficiently in a number of applications ranging from the manufacturing industry to heating systems in Fort Pierce, FL. Here is a guide on thermocouples and the role they play in your heater.

How the Thermocouple Works

Thermocouples work through the Seebeck Effect. This principle explains how two different metals close to each other create an electric current when you apply heat to them. The current gets stronger with an increase in temperature, making the thermocouple a simple temperature sensor.

When the pilot light releases heat, it keeps the electric current running through the thermocouple, keeping the valve open. When the pilot stops running, the thermocouple goes off. This causes the valve to close automatically.

The Importance of Thermocouples

Although a thermocouple is just a small electrical device, it’s a crucial safety component in your heater. It responds to temperature changes by opening the gas valve when the temperature is high or closing it when there’s limited to no direct heat supply.

Through this, you won’t have to worry about fire outbreaks due to unburnt gases in the combustion chamber. Thermocouples help keep your heater safe.

How to Tell If Your Thermocouple Is Failing

Check for contamination signs such as cracks or discoloration. If you notice these, immediately call an HVAC technician to inspect the device.

During this inspection, the technician will determine if your thermocouple is failing. The technician will also check for signs of failure during their maintenance service.

Grimes Heating & Air Conditioning professionals strive to keep your heating system functioning efficiently throughout the winter season. Our NATE-certified technicians offer comprehensive services — from checking the pilot light to calibrating the system. Contact Grimes Heating & Air Conditioning today for reliable heating services.

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