Simple Steps to Safely Relight the Pilot Light on Your Water Heater
A water heater pilot light going out is a common inconvenience, especially during colder months when gas systems work harder. Fortunately, relighting the pilot is usually a simple process—if done correctly and safely. Whether you have an older tank-style heater or a modern model with safety features, the following steps will help you restore hot water to your home quickly.
Why the Pilot Light Goes Out
Pilot lights may go out for several reasons:
• Drafts near the unit
• A dirty thermocouple
• Gas supply interruptions
• Faulty control valves
• Excess condensation in cold weather
Before relighting, always make sure there’s no lingering smell of gas—safety comes first.
Step 1: Locate the Instructions on the Tank
Most gas water heaters have a manufacturer’s label with relighting instructions. While the steps are similar across brands, details may vary slightly, so reviewing the label is always wise.
Step 2: Turn the Gas Control to “Off”
Turning the control to “Off” stops the flow of gas. Wait at least five minutes to allow any remaining gas to dissipate. This is a critical safety step.
Step 3: Switch to “Pilot” Mode
After waiting, turn the dial to “Pilot.” This setting allows a small amount of gas to flow to the pilot light, which is necessary for ignition.
Step 4: Press and Hold the Pilot Button
Pressing the pilot button primes the thermocouple and prepares the pilot for lighting. Some newer models use an electronic ignition rather than an open flame, but the principle is similar.
Step 5: Press the Igniter or Use a Long Lighter
Many water heaters include a built-in igniter, often a small red button. Press it repeatedly until the pilot flame appears.
If your heater does not have an igniter, carefully use a long lighter to ignite the pilot while holding the pilot button down.
Step 6: Hold the Button for 20–30 Seconds
Once the flame lights, continue holding the pilot button for 20 to 30 seconds to allow the thermocouple to heat up. This ensures the pilot stays lit after the button is released.
Step 7: Turn the Dial to “On”
After confirming the pilot stays lit, turn the dial back to “On.” The burner should ignite shortly afterward, and hot water will begin heating again.
Safety Tips
• Never relight if you smell gas—leave the home and call a professional.
• Keep flammable materials away from the unit.
• If the pilot repeatedly goes out, a component may be failing.
Final Thoughts
Relighting a water heater pilot light is a manageable task for many homeowners, but safety should always be the top priority. If you’re uncomfortable or if the pilot continues to go out, a plumber can inspect the system and address underlying issues like faulty thermocouples or gas line problems. Professional service ensures reliable hot water and peace of mind.
