A gas oven that won’t heat is usually one cheap part. The igniter is the single most common failure on a gas range, and the good news is the part is inexpensive. The catch is that the symptoms overlap with other faults, so it pays to confirm before you spend money.
What the oven igniter actually does
In a gas oven, the igniter does two jobs at once. It glows hot to light the gas, and it draws enough electrical current to open the safety gas valve. As the igniter ages, it still glows, but it draws less current. Eventually it can’t pull enough amperage to trip the valve open. The result: it glows, the burner never lights, and the oven stays cold.
That dual role is why a “still glowing” igniter is often the failed part. People assume a glow means the igniter is fine. It isn’t.
How to tell your igniter is bad
Set the oven to bake and observe what happens. You can often see the igniter glow through the oven window or the broiler area without moving anything.
- Bright orange glow, valve opens in 60 to 90 seconds, burner lights: igniter is healthy. The problem is elsewhere.
- Dim orange or red glow, never lights: weak igniter. It can no longer draw enough current to open the gas valve.
- No glow at all: dead igniter, a wiring break, or a control board not sending power.
- Long delay, clicking, then a soft “whoomp” when it finally lights: aging igniter on borrowed time.
A tech will confirm with a clamp meter on the igniter circuit (a healthy round igniter draws around 3.2 to 3.6 amps, a flat one around 3.6 to 4.0 amps). That reading rules out control-board and wiring issues before anyone orders a part.
What an oven igniter costs
The part is cheap. The labor and the diagnosis are where the cost sits.
- Igniter part: $25 to $90 for most mainstream gas ovens (GE, Whirlpool, Frigidaire, Samsung, LG). Built-in luxury units can run $120 or more.
- Diagnostic: $75, waived when you book the repair.
- Typical job installed: $200 to $350 for most gas ovens in the Tri-Valley.
We look up the OEM part cost for your exact model and email you a written estimate before we order anything. No surprise bill at the end.
What It Looks Like Lit: Burner and Igniter On Camera
Here is a gas oven bake burner after service, lighting with a clean, even blue flame across every port. The white bar running across the burner is the glow-bar (hot-surface) igniter, and the U-shaped tube is the bake burner. When the igniter is healthy it heats up, pulls enough current to open the gas safety valve, and the burner lights like this. When it weakens with age it still glows but cannot open the valve, so the oven will not heat.
Call a pro for the repair
The igniter is silicon carbide or flat ceramic. Oil from your fingers, or flexing it slightly during installation, cracks it before it ever heats. Beyond the fragile part, you’re accessing a live gas connection inside the appliance. A wrong diagnosis (buying the part before confirming the fault) means you’re out the part cost and the oven still doesn’t work.
We service gas and electric ovens, ranges, and cooktops across the Tri-Valley. If your oven glows but won’t light, or won’t glow at all, we’ll confirm the cause on the first visit and send a written estimate before ordering anything. More on how we narrow these down in our oven and stove repair guide and our full cooking appliance repair service. Running a Wolf range that won’t heat? See our Wolf oven not heating diagnostic for the built-in-specific version of this same check.
Call (925) 999-4095 or email [email protected] to book. $75 diagnostic, credited to the repair, written estimate before any work. We’ll get you on the schedule fast, often same or next day when we can. You can also reach us through the contact page.
FAQ
How much does an oven igniter replacement cost? The part runs $25 to $90 on most gas ovens, up to $120 or more on built-in luxury brands. Installed with diagnostic and labor, most jobs land between $200 and $350. Get a quote before committing.
How do I know my igniter is bad? A failing igniter glows dim and never gets hot enough to open the gas valve, so the burner won’t light. No glow at all usually means a dead igniter or a wiring break.
Should I replace it myself? The igniter is a fragile ceramic or silicon-carbide element that cracks from handling, and it sits next to a gas line. Add the risk of misdiagnosing the fault and you’re better off having it done right the first time.