How to Fix the Water Heater Pilot Light: 1 Minute to a Warm Shower: Fix Your Water Heater’s Pilot Light

The pilot light on your water heater is a tiny flame that ignites the burner, allowing your unit to heat water as needed. If it goes out, you lose access to hot water. Fixing the water heater pilot light is a manageable DIY task if you understand the steps and follow safety precautions. Here’s how to troubleshoot and relight the pilot light safely.

How to Fix the Water Heater Pilot Light

1. Turn Off the Gas
2. Locate the gas regulator valve, usually found near the bottom of your water heater. Turn it to the "OFF" position and wait at least 5-10 minutes to clear out any lingering gas.
3. Access the Pilot Light
4. Remove the access panel to get to the burner and pilot light assembly. You’ll see a small tube—the pilot tube—leading to the pilot light.
5. Check for Obstructions or Dirt
6. Dirt, dust, or debris can block the pilot orifice. Use compressed air or a soft brush to gently clean the tube and area around the pilot.
7. Inspect the Thermocouple
8. If your pilot light won't stay lit, the thermocouple (a safety device) may be dirty, misaligned, or faulty. A misaligned thermocouple won’t sense the flame and will shut off the gas supply. Ensure the tip is clean and correctly positioned in the pilot flame.
9. Relight the Pilot
10. Turn the regulator valve to “PILOT.” Hold down the valve’s red button while using a long lighter or match to ignite the pilot. Keep holding the button for about 30–60 seconds to allow the thermocouple to warm up and sense the flame.
11. Turn On the Heater
12. Once the pilot light stays on, turn the regulator valve to “ON” and replace the access panel. Restore hot water by setting your thermostat to the desired temperature.

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Tips 1:

If you find yourself frequently relighting the pilot, or if it won’t stay on despite cleaning and adjusting, the issue may require replacement parts or professional repair. Always consider local building codes and safety standards when working with gas appliances.

FAQ

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

A: Common causes include a faulty thermocouple, a dirty pilot tube, drafts, or issues with the gas regulator.

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

A: Yes, if you follow safety instructions. Turn off the gas, wait before lighting, and consult your owner's manual for specific instructions. If unsure, always call a professional.

Q: What tools do I need to fix the pilot light?

A: Usually just a long lighter or match, and possibly a screwdriver to remove the access panel. For cleaning, use compressed air or a small brush.

Q: How do I know if the thermocouple is bad?

A: If the pilot light won’t stay lit even after cleaning and adjusting, the thermocouple may be damaged and need replacement.

Q: Should I upgrade my water heater instead of repairing the pilot light?

A: If your water heater is over 10–12 years old or needs frequent repairs, replacement could be more cost-effective and environmentally friendly.