Furnace Pilot Lights

Introduction

A furnace pilot light is a small flame that is constantly burning in gas furnaces. It serves as the ignition source for the main burners of the furnace, allowing it to produce heat. Understanding how the pilot light works and what to do if it goes out is essential for homeowners who rely on gas furnaces for heating their homes. In this blog post, we will discuss the importance of the furnace pilot light, how it works, and what to do if it goes out.

The Importance of the Furnace Pilot Light

The furnace pilot light plays a crucial role in the operation of a gas furnace. It is responsible for igniting the main burners, which then produce heat to warm the air that circulates throughout the home. Without a functioning pilot light, the furnace will not be able to generate heat, leaving the home cold and uncomfortable.

How the Furnace Pilot Light Works

The pilot light is typically located near the main burners of the furnace. It is a small flame that is continuously burning, even when the furnace is not actively heating the home. When the thermostat detects that the temperature in the home has dropped below the desired level, it sends a signal to the furnace to turn on. This signal activates the gas valve, allowing a small amount of gas to flow to the pilot light. The pilot light then ignites the gas, creating a flame that remains lit until the thermostat signals the furnace to turn off.

What to Do if the Furnace Pilot Light Goes Out

If you notice that the pilot light on your furnace has gone out, there are a few steps you can take to relight it. However, it is important to prioritize safety and follow the manufacturer’s instructions or consult a professional if you are unsure.

1. Turn off the gas supply: Before attempting to relight the pilot light, make sure to turn off the gas supply to the furnace. This can usually be done by turning the gas valve to the “off” position.
2. Allow the gas to dissipate: After turning off the gas supply, wait for a few minutes to allow any remaining gas to dissipate. This is important to prevent any potential gas buildup.
3. Locate the pilot light: The pilot light is typically located near the main burners of the furnace. It is a small tube with a flame at the end.
4. Follow the manufacturer’s instructions: Consult the furnace’s user manual or the manufacturer’s instructions for specific guidance on how to relight the pilot light. Different furnace models may have slightly different procedures.
5. Relight the pilot light: Once you have followed the manufacturer’s instructions, use a long lighter or match to carefully relight the pilot light. Hold the flame near the pilot light while slowly turning the gas valve to the “on” position. The pilot light should ignite.
6. Monitor the pilot light: After relighting the pilot light, observe it for a few minutes to ensure that it remains lit. If it goes out again, there may be an underlying issue that requires professional attention.
7. Turn on the gas supply: Once the pilot light is successfully relit and remains lit, you can turn on the gas supply to the furnace.

Conclusion

The furnace pilot light is a vital component of gas furnaces, providing the ignition source for the main burners. Understanding how the pilot light works and what to do if it goes out can help homeowners ensure that their furnaces continue to operate efficiently and effectively. By following the appropriate safety precautions and manufacturer’s instructions, homeowners can safely relight the pilot light and restore heat to their homes.