Most gas ovens have a pilot light, but newer models often use electronic ignition instead

Whether your gas oven has a pilot light depends on when it was made. Ovens built before the 1990s almost always have a standing pilot light—a small flame that burns continuously inside the oven to ignite the main burner when you turn the temperature dial. Ovens made after roughly 2000 typically use an electronic ignition system instead, which creates a spark to light the gas only when you turn the oven on. Some ovens from the 1990s could go either way.

The easiest way to find out is to look inside your oven with the door open and the oven off. If you see a small blue flame burning at the bottom or back of the oven, you have a pilot light. If you don't see any flame and the oven lights up with a clicking sound when you turn it on, you have electronic ignition.

Key Takeaways

  • A standing pilot light is a small flame that burns all the time; electronic ignition creates a spark only when the oven is turned on.
  • Older ovens (pre-1990s) almost always have pilot lights; newer ones (post-2000) usually have electronic ignition.
  • You can tell which type you have by looking for a small blue flame inside the oven when it is off.
  • If your pilot light goes out, you can usually relight it yourself by following the instructions on the oven door or in the manual.
  • Electronic ignition systems are more energy-efficient but cost more to repair if they fail.

How a pilot light works in a gas oven

A pilot light is a small burner that stays lit all the time. It sits near the main oven burner and burns a tiny amount of gas continuously, even when the oven is off. When you turn the temperature dial, a valve opens and gas flows to the main burner. The pilot flame ignites that gas, and the main burner lights up.

The advantage of a pilot light is simplicity—there are no electronic parts to fail, and the system works the same way whether the power is on or off. The disadvantage is that it wastes gas by burning 24 hours a day, even when you are not using the oven. Over the course of a year, that adds up.

How electronic ignition works instead

An electronic ignition system uses a spark plug or hot surface igniter to light the gas only when you need it. When you turn the oven on, an electronic control board sends a signal that creates either a spark (like a car engine) or heats a ceramic element until it glows. That heat or spark ignites the gas flowing to the main burner. Once the burner is lit, a sensor confirms the flame is there, and the igniter shuts off.

Electronic ignition is more efficient because it does not waste gas when the oven is idle. It also means you do not have to worry about the pilot light going out. The trade-off is that if the igniter fails, you cannot light the oven at all, and the repair usually costs more than relighting a pilot.

What to do if your pilot light goes out

If you have a standing pilot light and it goes out, the oven will not light. The first step is to check the instructions on the inside of the oven door or in your manual—most ovens have a specific procedure for relighting the pilot. Usually it involves turning the gas knob to "Pilot," holding down a button to release gas, and using a long lighter or match to ignite the pilot flame at the burner opening.

Hold the button down for 30 to 60 seconds after the pilot lights. This allows a thermocouple (a heat-sensing device) to warm up and signal the gas valve that the pilot is burning. If you release the button too soon, the pilot will go out again. If the pilot lights but goes out repeatedly after you release the button, the thermocouple may be failing and you should call a service technician.

If the pilot will not light at all, the problem could be a clogged pilot opening, a broken igniter, or a gas supply issue. Do not try to force it—call a professional.

Why a pilot light might go out

A pilot light can go out for several reasons. A draft from an open window or door can blow it out. A buildup of dust or debris can clog the pilot opening and starve it of gas. The thermocouple can wear out over time and stop holding the gas valve open. A faulty gas valve can also cause the pilot to stay lit for only a few seconds after you release the button.

If your pilot light goes out once, it is usually just a draft or a temporary issue. If it goes out repeatedly, something is wrong with the oven itself and you should have it inspected.

Pilot lights versus electronic ignition: which is better

Neither system is objectively "better"—it depends on what matters to you. A pilot light is simpler, more reliable in a power outage, and cheaper to repair when something goes wrong. An electronic ignition system is more energy-efficient, does not require relighting, and does not waste gas when the oven is off.

If you have an older oven with a pilot light and it is working well, there is no reason to replace it. If you are buying a new oven or your current one needs a major repair, electronic ignition is now the standard and offers real savings on your gas bill over time.

When to call a professional for pilot light problems

You can safely relight a pilot light yourself if the instructions are clear and the process is straightforward. However, call a service technician if the pilot will not light at all, if it lights but goes out when ready after you release the button, or if it goes out repeatedly within a few days.

Also call a professional if you smell gas but do not see a flame, or if you hear a hissing sound coming from the oven. These are signs of a gas leak or a valve problem, and they are not safe to troubleshoot on your own. Do not use the oven until it has been inspected.

Frequently Asked Questions

Can I use my gas oven if the pilot light is out?

No. Without a pilot light or electronic ignition, there is no way to light the main burner. The oven will not heat up. You will need to either relight the pilot or have the electronic ignition system repaired before you can use the oven again.

Does a pilot light use a lot of gas?

A pilot light uses a small but steady amount of gas—roughly equivalent to a small candle burning continuously. Over a year, it can add 10 to 15 percent to your gas bill if you rarely use the oven. If you use the oven several times a week, the pilot light's cost is usually less noticeable compared to the main burner.

How long does a thermocouple last?

A thermocouple typically lasts 5 to 10 years, depending on how often the oven is used and how well it is maintained. If your pilot light goes out repeatedly and relighting does not help, the thermocouple is often the culprit and will need to be replaced by a technician.

What is the clicking sound I hear when I turn on my oven?

That clicking is the electronic igniter trying to create a spark to light the gas. It is normal and should stop once the burner lights. If the clicking continues for more than a few seconds without the burner lighting, the igniter may be failing and you should have it checked.

Can I convert a pilot light oven to electronic ignition?

Conversion kits exist, but they are not commonly installed because the cost is usually close to the cost of a new oven. If your pilot light oven is otherwise in good condition and you want to keep it, relighting the pilot when it goes out is the simpler and cheaper option.