How To Light Pilot Light On Furnace

In order to ensure your furnace is working efficiently, it’s important to know how to properly light a pilot light. Taking the time to understand this process can save you time, energy and money in the long run. Below, we’ve outlined seven steps to guide you through the process.

Step 1: Turn off the gas

The first step to lighting a pilot light is to turn off the gas supply. This can usually be done by turning the valve on the gas line perpendicular to the line itself. It’s important to remember that natural gas is highly flammable, and precautions should always be taken when dealing with it.

Pilot Light on Furnace

Step 2: Locate the pilot light

The location of your furnace’s pilot light may vary depending on the make and model of your furnace. Generally, the pilot light is located near the burners on the bottom of the furnace, but you may need to consult your furnace’s manual for specific instructions.

Step 3: Remove the furnace cover

Most furnaces have a cover that needs to be removed in order to access the pilot light. This cover can usually be removed by unscrewing it, but again, it’s always best to refer to your furnace’s manual to be sure.

Step 4: Locate the pilot valve

The pilot valve is a small valve located near the pilot light. It is usually located on the gas line that leads to the pilot light. Once you’ve located it, turn it to the “off” position.

Step 5: Wait a few minutes

After you’ve turned off the pilot valve, it’s important to wait a few minutes before proceeding. This helps to ensure that all the gas has dissipated and there’s no risk of fire or explosion during the lighting process.

Trane Furnace Pilot Light

Step 6: Relight the pilot light

To light the pilot light, you’ll need to use a long fireplace lighter or match. Hold the lighter or match near the pilot light, then turn the pilot valve to the “pilot” position. While still holding the lighter or match near the pilot light, press the ignition button to light the flame.

Once the flame has been lit, continue holding the pilot valve in the “pilot” position for about 30 seconds to ensure that the flame stays lit. After 30 seconds, release the valve and the flame should stay lit on its own. If it does not, repeat the process and hold the valve for a longer period of time.

Step 7: Turn on the gas

Finally, once the pilot light is lit and the flame is steady, turn the pilot valve to the “on” position. This will allow gas to flow to the burners, and your furnace should begin heating your home.


What should I do if the pilot light won’t stay lit?

If the pilot light won’t stay lit, it could be a sign that there’s an issue with your furnace that requires professional attention. If you’ve attempted to relight the pilot light multiple times and it still won’t stay lit, don’t try to fix it yourself. Contact a professional HVAC technician to diagnose and repair the issue.

Can I light the pilot light without a lighter?

It’s not recommended to light a pilot light without a long lighter, match or other ignition source. Trying to use a stove lighter, candle or other household item could be dangerous and lead to serious injury or damage. Always use proper ignition sources when lighting a pilot light.

Can I relight the pilot light myself?

If you’re comfortable with following the steps outlined above and you’ve read your furnace’s manual, you can likely relight the pilot light yourself. However, if you’re unsure or concerned about your safety, it’s always best to contact a professional HVAC technician for assistance.


Knowing how to properly light a furnace’s pilot light can save you time, energy and money in the long run. By following the seven steps we’ve outlined above and taking the appropriate precautions, you can ensure that your furnace is working efficiently and safely throughout the cold winter months.

Leave a Comment