How to Start the Pilot Light on Your Furnace: 1 Minute to Ignite Your Furnace Safety and Efficiency

Starting the pilot light on your furnace is an important seasonal task that ensures your heating system functions safely and efficiently. Most modern furnaces have an electronic ignition, but some older models still use a standing pilot light. Before starting, it’s important to follow the manufacturer’s instructions and prioritize safety. Here’s a step-by-step guide you can follow:

1. Turn Off the Furnace: Set your thermostat to the “off” position and flip the furnace’s power switch off if available.
2. Locate the Pilot Light Assembly: Usually found near the bottom of your furnace, look for the gas valve with “on”, “off”, and “pilot” settings.
3. Turn the Gas Valve to "Off": This stops the flow of gas. Wait at least five minutes to clear any residual gas before continuing—this helps prevent accidental ignition.
4. Turn the Gas Valve to "Pilot": Press and hold the knob in this position. This allows gas to flow to the pilot burner only.
5. Ignite the Pilot: While holding the valve in the “pilot” position, use a long lighter or fireplace match to ignite the pilot. Some furnaces have an ignition button—press it while holding the pilot knob.
6. Continue Holding the Pilot Button: Keep it pressed for about 30 seconds after the pilot is lit. This heats the thermocouple, allowing the pilot to remain on.
7. Release the Button and Turn the Valve to "On": If the pilot light remains lit, turn the gas valve to the “on” position.
8. Restore Power and Test: Switch the furnace power and thermostat back on to confirm proper operation.

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Tips 1:

Always keep the area around your furnace clear of clutter to ensure proper ventilation and safety. Don’t hesitate to call a licensed technician if you smell gas or feel uncertain at any step.

FAQ

Q: Why won’t my furnace’s pilot light stay lit?

A: Common causes include a dirty pilot orifice, faulty thermocouple, or issues with the gas supply. Cleaning or replacing parts may be necessary.

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

A: Yes, if you follow proper safety procedures. However, if you smell gas or feel unsure, contact a professional technician immediately.

Q: How often should I check or relight my pilot light?

A: At the beginning of the heating season and after any service that disrupts the gas supply. Modern furnaces with electronic ignition don’t require this.

Q: What should I do if the pilot light keeps going out?

A: Have a technician inspect components like the thermocouple or gas control valve, as these may be malfunctioning.

Q: Can I upgrade my furnace to a model without a pilot light?

A: Yes, newer furnaces use electronic ignition for efficiency and safety. Upgrading may require new venting or electrical work—consult a qualified HVAC contractor.