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Sweetwater Plumbing 💬 Text us ☎ (909) 312-4516

How to check
your pilot light.

If your gas water heater isn't producing hot water, the pilot light is one of the first things to check. Here's how, and what to do if it's out. We put this guide together to help, and if you would rather have us take care of it, we are always just a call away.

Short answer

Where is the pilot light on my water heater?

On a gas tank water heater, the pilot light sits behind a small access panel near the bottom of the tank: usually a metal plate that pulls off or swings open. Look through the viewing window for a steady blue flame about the size of a pencil eraser. No flame means the pilot is out. A yellow, lazy, or flickering flame means the pilot isn't burning cleanly; turn the gas control to OFF, and call or text Sweetwater.

How to check

How do I check the pilot light step by step?

Smell gas? Stop here. Don't light anything or flip switches. Leave the house and call SoCalGas at 1-800-427-2200 and 911 from outside.

  1. Look at the bottom of your water heater for a small glass viewing window or access cover. On newer sealed-combustion heaters, look through the glass only; don't remove the inner burner door. Some newer models have electronic ignition and no standing pilot at all; if yours has no pilot to check, call or text us.
  2. Look through the window. You should see a small blue flame, the pilot light. If the flame is yellow, lazy or flickering, turn the gas control to OFF and call or text us.
  3. If you see a steady blue flame, the pilot is lit and the problem is elsewhere (usually the gas control or the burner). Call (909) 312-4516 or text (909) 247-6791 and we'll find it.
  4. If you see no flame, the pilot is out. Try relighting it (see how to restart a water heater). If it won't stay lit after three tries, stop and call or text us.
Service Area

Serving 24 cities across the Inland Empire.

Chino · Chino Hills · Claremont · Colton · Corona · Diamond Bar · Eastvale · Fontana · Grand Terrace · Highland · La Verne · Loma Linda · Mira Loma · Montclair · Norco · Ontario · Pomona · Rancho Cucamonga · Redlands · Rialto · Riverside · San Bernardino · San Dimas · Upland

Common Questions

Frequently asked questions.

When should I call a plumber instead of checking the pilot light myself?
Call or text Sweetwater if the pilot is lit but you still have no hot water, the flame is yellow or lazy instead of blue, or the pilot won't stay lit after three tries. If you smell gas, don't relight anything: leave the house and call SoCalGas at 1-800-427-2200 and 911 from outside. Call (909) 312-4516 (phones answered 24/7) or text (909) 247-6791.
Is it safe to do this yourself?
Yes. Checking the pilot only means looking through the viewing window. If you relight it, follow the lighting instructions on the heater's label. Don't remove the inner burner door on a sealed-combustion heater. If you smell gas, don't light anything: leave the house and call SoCalGas at 1-800-427-2200 and 911 from outside.
Do I need special tools?
No. A flashlight to see through the viewing window is all you need to check the pilot.
What if this doesn't fix the problem?
If the pilot is lit and you still have no hot water, or the pilot keeps going out, the problem is usually in the heater's gas control, thermocouple or burner, and that needs a professional. Call (909) 312-4516 (phones answered 24/7) or text (909) 247-6791, and Sweetwater Plumbing will take it from there.

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