How to Fix a Pilot Light on a Water Heater: 1 Minute to Restart Your Hot Water Supply

If your water heater’s pilot light goes out, you might experience a lack of hot water, which can be frustrating. Fixing a pilot light is a manageable task for most homeowners if approached safely. Let’s walk through essential steps to relight and fix your water heater’s pilot light, and touch on important safety tips to keep in mind.

1. Turn Off the Gas

Before doing anything, turn the gas control knob to the “OFF” position. Wait at least 5–10 minutes to allow any residual gas to dissipate. This prevents risk of fire or explosion.

2. Locate the Pilot Light Assembly

Open the access panel or door at the bottom of the water heater. You’ll see the pilot burner, gas tube, and possibly an igniter button.

3. Prepare for Ignition

Turn the gas control knob to the “PILOT” position. Press and hold down the knob. Some models require a separate button to be depressed. This action allows gas to reach the pilot light.

4. Ignite the Pilot

While holding down the knob, ignite the pilot using either the piezoelectric igniter (a red or black button you push repeatedly) or a long lighter/match if your model requires manual lighting. Hold the knob down for 30–60 seconds after ignition so the thermocouple senses the flame.

5. Check the Flame

Release the knob; if the pilot stays lit, you can now set the knob to the “ON” position. Replace the access panel. If the pilot goes out, repeat the process once more. If it still fails, there may be an issue with the thermocouple or gas supply—these will require either cleaning, adjustment, or professional repair.

Safety Note: Never attempt repairs if you smell gas that doesn’t dissipate quickly. Exit your home immediately and contact your gas provider.

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Tips 1:

Always check your heater’s manual for model-specific instructions. Perform regular maintenance, such as clearing dust from the burner area, to keep your pilot light trouble-free.

FAQ

Q: Why does my water heater’s pilot light keep going out?

A: The most common reasons include a faulty thermocouple, dirty pilot orifice, or issues with the gas supply. Regular cleaning and inspection reduce recurring issues.

Q: Can I light a pilot light if I smell gas?

A: No. If you smell gas, leave the area immediately and call your gas provider—it’s a safety hazard.

Q: How long should I hold the pilot button when relighting?

A: Hold it for 30–60 seconds after the flame appears to allow the thermocouple to heat up and sense the flame.

Q: When should I call a professional for pilot light issues?

A: If you’ve tried relighting multiple times or suspect a faulty part (thermocouple, gas valve), professional repair is advised for safety.

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

A: Yes, if you follow proper safety procedures and the instructions in your water heater’s manual. But if you have any doubt, call a licensed technician.