How to Light a Pilot on Your Furnace: 1 Minute Guide to Easily Ignite Your Furnace Pilot Light

Lighting the pilot on your furnace is an essential skill for homeowners, especially when dealing with older models that don't feature automatic ignition systems. The pilot light is a small flame that ignites the burners in your furnace, allowing your system to heat your home. If this light goes out, your furnace won’t produce heat. Here’s a step-by-step guide on how to safely light the pilot on your furnace:

1. Turn Off the Furnace: Locate the power switch or turn the thermostat to the "off" position. Allow several minutes for any lingering gas to dissipate.
2. Find the Pilot Location: Open the furnace access panel and look for the pilot light assembly. This usually includes a gas valve with "On," "Off," and "Pilot" settings.
3. Set Valve to ‘Pilot’: Turn the gas valve to the "Pilot" position. Some valves require you to push down and hold the knob to allow gas flow to the pilot.
4. Ignite the Pilot: While holding the valve in the "Pilot" position, use a long lighter or fireplace match to ignite the pilot light. Continue holding the valve button for about 30-60 seconds to ensure the thermocouple warms up and registers the flame.
5. Switch Valve to ‘On’: Once the pilot is lit and stable, release the button and turn the valve to the "On" position. Replace the access panel, and restore power to the furnace or turn the thermostat back to "heat."

Always consult your furnace’s manual for model-specific guidance, and never attempt repairs if you smell gas—evacuate and call your gas supplier immediately.

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Tips 1:

Ensure there’s no draft in the area when lighting the pilot, as sudden air movement can extinguish the flame or delay ignition.

FAQ

Q: Why does my furnace pilot light keep going out?

A: It could be due to a faulty thermocouple, a dirty pilot orifice, or insufficient gas supply. Regular maintenance can help prevent this.

Q: How long should I hold the gas valve in the ‘Pilot’ position?

A: Hold it for about 30-60 seconds to allow the thermocouple time to detect the flame and keep the gas flowing.

Q: Is it safe to relight the pilot myself?

A: Generally, yes, if you follow the correct safety steps. If you smell gas or feel uncomfortable, contact a professional immediately.

Q: What tools do I need to light my furnace pilot?

A: You’ll need a long-reach lighter or fireplace match. Always have a flashlight handy for better visibility.

Q: What if the pilot light won’t stay lit?

A: This may indicate a problem with the thermocouple or gas supply. It’s best to call a certified HVAC technician for diagnosis and repair.