How to Turn on a Water Heater Pilot
Turning on a water heater pilot means safely relighting the small flame that ignites the gas burner. Before you touch any controls, confirm the unit is a gas water heater and that you can smell no gas. If you do smell gas, leave the area and contact your gas provider or emergency services immediately.
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Safety Checks Before You Start
- Confirm there is no gas odor near the heater.
- Ensure the area is well ventilated.
- Locate the gas shutoff valve and know where it is.
- Keep a match or long-reach lighter ready.
Locate the Pilot Assembly
The pilot assembly is usually at the bottom of the tank, behind a small access panel or metal shield. You will see the gas control valve, the pilot tube, and the thermocouple, a thin copper sensor that tells the valve the pilot is lit.
Step-by-Step Relight Procedure
If the Pilot Won't Stay Lit
A pilot that goes out as soon as you release the button usually means the thermocouple is not sensing the flame. Check that the thermocouple tip is in the pilot flame and is not bent or sooty. If cleaning the tip with fine sandpaper does not help, the thermocouple may need replacement.
When to Call a Professional
Call a licensed technician if you smell gas, if the pilot refuses to light after several attempts, or if the burner fails to ignite after the pilot is lit. Repeated pilot outages can signal a faulty thermocouple, a blocked pilot tube, or a more serious gas control issue.