On older gas-powered appliances, a pilot light is a small flame that stays lit to ignite the main burner. You’ll typically find it near the burner assembly, hidden behind access panels or inside the firebox, depending on the device. Modern appliances increasingly use electronic ignition instead of a standing pilot.
Where pilot lights are commonly located by appliance
Knowing the typical hiding spots for pilot flames helps homeowners locate and inspect them safely. The following guide covers common places you might look.
- Furnace or boiler: behind a service panel near the burner, sometimes visible through a small viewing window or opening.
- Gas water heater: behind an access panel on the side or front of the tank, with the burner area at the bottom near the heat exchanger.
- Gas fireplace: inside the firebox behind the decorative front, near the burner with a thermostat or control valve nearby.
- Gas range or oven (older models): at the back or under the cooktop; standing pilots are visible near the oven or burner area, though many modern ranges use electronic ignition.
- Outdoor gas grills (older designs): within the burner housing near the gas valve, though newer grills often rely on electronic ignition.
With these locations in mind, you can visually determine whether a standing pilot flame exists and where to look for service panels or access points. If you cannot locate a flame or you smell gas, do not attempt to relight; contact a professional immediately.
Relighting and safety considerations
Relighting a standing pilot should be done cautiously and only after confirming there is no gas leak. Always refer to the owner’s manual for your model, as procedures vary. If you’re unsure or uncomfortable, call a licensed technician.
- Turn the appliance’s control to OFF and wait several minutes to clear any accumulated gas from the area.
- Access the pilot assembly by removing the appropriate panel or cover, identifying the pilot flame, thermocouple, and ignition source.
- Turn the control to PILOT (or as instructed) and press/hold the reset or reset-and-light button while lighting the pilot with a long lighter or the built-in igniter.
- Keep holding the control for 30–60 seconds after the flame appears to heat the thermocouple, then slowly release the knob.
- Turn the control to ON or the normal operating setting and verify that the main burner ignites and remains lit.
If the pilot fails to stay lit or you smell gas at any point, turn everything off and evacuate the area, then contact your gas utility or a licensed technician for safe inspection and service.
Modern ignition trends: what changed?
In recent decades, many gas appliances moved away from standing pilots toward electronic ignition systems. These systems use sparks or hot-surface ignition and do not require a flame to remain lit. Some appliances still offer a standing pilot as an option, but the trend is toward pilotless designs to improve efficiency and safety.
- Furnaces/boilers: a growing share use electronic ignition; pilots may not exist on newer units.
- Water heaters: newer models often employ electronic ignition or hot-surface ignition rather than a continuous pilot flame.
- Fireplaces: many models use direct or intermittent ignition rather than a constant pilot flame; check the manual for your unit.
- Ranges and ovens: modern gas ranges commonly rely on electronic ignition; standing pilots are increasingly uncommon.
Understanding whether your appliance has a standing pilot or an electronic ignition helps you prepare for maintenance, troubleshooting, and potential replacement.
Summary
Pilot lights appear on older gas-fired appliances near the burner area, typically behind service panels or inside the firebox. Because modern equipment often uses electronic ignition, standing pilots are less common. If you smell gas, hear hissing, or cannot locate a flame, leave the area and contact a professional. Always consult the specific owner's manual for your model’s ignition method and relighting instructions.