When your water heater suddenly stops producing hot water, one of the most common causes is a faulty pilot flame. Knowing how to relight the gas water heater pilot light safely can save you from stress and discomfort.
What Is the Pilot Light?
A pilot light is a small, continuously burning flame inside a gas water heater. It ignites the burner whenever the water heater needs to heat water. Without it, the burner cannot function, which means no hot water will be available.
Most older water heaters rely on pilot lights, while many newer models use electronic ignition. The pilot flame ensures that the gas flowing into the burner is ignited consistently. If it goes out because of a draft or temporary interruption in the gas supply, you’ll need to relight it to restore hot water in your home.
How to Relight Pilot Light
Relighting your water heater’s pilot flame is not complicated, but it does require safety precautions.
You will need:
- A long utility lighter or a matchstick
- A flashlight
Here are the steps to relight the pilot flame:
- Find the gas control knob on your water heater, which is usually around the bottom of the heater.
- Turn the knob to off.
- Wait at least five minutes to allow any lingering gas to dissipate.
- Open the access panel or cover at the base of the heater. Use a flashlight to locate the pilot assembly.
- Turn the control knob to the pilot position. Hold the knob down to start the flow of gas to the pilot light.
- While holding the knob down, ignite the pilot flame using a matchstick.
- Keep holding the knob for 30 to 60 seconds to give the thermocouple time to heat up.
- Once the flame stays lit, turn the knob to on.
- Replace the access cover and check that the burner ignites properly.
If you’re unsure or uncomfortable doing this, we offer specialized water heater services and our professionals will be happy to assist.
Frequently Asked Questions
Here are some common questions we receive about water heaters.
Do Electric Water Heaters Have a Pilot Light?
No, electric water heaters don’t have a pilot light. They use electricity to power heating elements inside the tank instead of a flame, making them different from gas models that require a pilot light.
What to Do if the Water Heater’s Pilot Light Won’t Light?
If the pilot light won’t turn on:
- Make sure the gas supply is turned on.
- Inspect for kinks in the pilot gas tube.
- Check the thermocouple, which may need replacement.
- Clean the pilot orifice to remove dirt or debris blocking the flame.
If the problem persists, contact our plumbing team for help.
Keep Your Water Heater Working in Top Condition
Classic Aire Care has over 90 years of experience keeping St. Louis homeowners’ water heaters in good condition. Our licensed technicians repair and replace water heater systems.
We offer 24/7 same-day emergency service, so you’re never left without hot water when you need it most. Our team stands behind our work and treats your home with care.
