How to Light the Furnace Pilot: 1 Minute to Getting Your Furnace Running Again

Lighting the furnace pilot is a straightforward task, but it must be done with caution to ensure safety and proper functionality. First, locate the furnace’s pilot assembly, which is usually near the burner. Turn the thermostat to the lowest setting, and set the furnace’s power switch to “off.” Allow several minutes for any lingering gas to dissipate. Next, find the gas control knob and turn it to the “pilot” position. Press and hold this knob or button while igniting the pilot with a long lighter or, in some cases, by clicking the built-in igniter. Continue holding the knob for 30–60 seconds after the flame is lit to allow the thermocouple to warm up, ensuring the flame stays on. Finally, switch the knob back to “on” and restore power. Your furnace should now be operational.

Tips 1:

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FAQ

Q: Is it safe to light my furnace pilot myself?

A: Yes, if you carefully follow the manufacturer’s instructions. Always allow time for gas to dissipate between attempts and ensure good ventilation.

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

A: This could indicate a problem with the thermocouple or gas supply. It’s best to call a licensed technician if basic troubleshooting doesn’t work.

Q: How do I know if my furnace has a pilot light or an electronic ignition?

A: Check your manufacturer’s manual. Older furnaces usually have manual pilots, while newer systems often have electronic ignition.

Q: Do I need to turn off the gas to the whole house before lighting the pilot?

A: You typically only need to set the furnace’s control to “off.” However, if you smell gas throughout your home, leave immediately and call emergency services.

Q: How often should I check on my furnace’s pilot light?

A: At the start of each heating season and any time the furnace stops producing heat unexpectedly.