How to Light a Gas Furnace Pilot Light

When the pilot light on your furnace goes out, your furnace will not heat again until the pilot light is again burning. But, as most homeowners with natural gas furnaces know, the pilot light will not re-light, by itself. You will need to know how to light it.

Step 1 – Locate the Pilot Light Assembly and Reset Switch

The pilot light assembly is typically in the bottom of the furnace near a small knob that usually has 3 settings: "Pilot," "Off," and "On." If you are unable to locate this assembly or knob refer to your furnace user instructions and diagram.

Step 2 -  Turn the Knob to the "Off" Setting

You should be able to turn the knob with your fingers. Turn it so that the "Off" setting is selected. Wait. Any gas that has emitted from the pilot should be allowed to dissipate before you begin.

Step 3 – Light the Pilot Light

Turn the knob to the "Pilot" setting, which will re-start the flow of gas to the pilot. Light your match or lighter. Depress the reset button, and while it is depressed, hold the match flame near the pilot opening. When the pilot is burning brightly, release the rest button. The furnace will then start, automatically.