Gas oven igniters tend to fade rather than fail all at once, which is why slow preheating is usually the first sign. No source checked for this post puts a number of years on gas oven igniter lifespan, but KitchenAid does note that grease or debris buildup, or the age of the appliance, can affect a gas oven's ability to ignite.
Typical lifespan
The closest verified figure is for the whole oven: InterNACHI lists gas ovens at 10 to 18 years, and the igniter is one of the parts that tends to need attention within that span.
Most gas ovens use a hot surface igniter, often called a glow bar. GE describes the basic check: turn the oven on, open the door and look for a red glow. On many ovens, the igniter does two jobs. It gets hot enough to light the gas, and the current flowing through it also tells the gas valve to open. As an igniter ages, it can still glow but heat more slowly or draw less current. The valve then opens late or not at all, which is why a weak igniter often shows up as slow preheating before the oven stops heating completely.
What wears out first
| Part | Typical sign of wear |
|---|---|
| Igniter element | Glows but takes longer to light the burner, or glows with no flame |
| Igniter surface | Visible cracks or white spots on the element |
| Igniter wiring and connector | Intermittent heating, or scorched or discolored wire ends |
| Oven burner ports | Uneven or lazy flame after lighting, slow heating |
| Gas safety valve | No gas flow even with a strong igniter (a technician's diagnosis) |
What shortens its life
- •Grease and food residue on or near the igniter, which KitchenAid lists as a cause of ignition problems.
- •Bumping the igniter while removing the oven floor panel or cleaning. Many igniters are brittle.
- •Very frequent oven use, since the igniter heats up on every cycle.
- •Spills that run down into the burner area.
What helps it last
- •Keep the oven floor and burner area clean, following your manual.
- •Don't touch the igniter element when cleaning around it.
- •Wipe up spills once the oven is cool, before they bake on.
- •Notice changes in preheat time. A gradual increase is often the first sign.
Signs of age vs. signs of a fixable fault
Gradual igniter wear has a pattern: preheating takes longer over weeks or months, ignition is sometimes delayed, and the problem gets worse until the oven won't heat. A cracked element can fail suddenly.
If there's no glow at all, GE says the problem may be the igniter, the control or other electrical parts, so no glow doesn't always mean the igniter. A strong glow with no gas at all can point to the valve or the gas supply. If the cooktop burners also don't light, the gas supply or the range's power is the likelier cause. KitchenAid recommends contacting a professional when an igniter is faulty, and any gas component work belongs with a technician. If you smell gas, leave the house and call 911 or your gas utility from outside. For the rest of the range, see how long ranges and ovens last. Our oven service can test the igniter and valve.
Sources
- •KitchenAid: Why Won't My Gas Oven Heat Up?
- •GE Appliances: Gas Range, Oven Does Not Heat, But the Burners Heat
Takeaway: A glow bar igniter usually announces its age through slower preheating, so a lengthening preheat is the time to have it checked.
Gas oven slow to preheat or not heating at all? Call True Fix Chicago at (312) 896-8111 to have the igniter and valve tested.