When dealing with a bad igniter, a component that fails to create the spark needed to light a gas flame in ovens, hobs or other appliances. Also known as a faulty spark electrode, it can leave your kitchen silent and your meals uncooked.
One of the most common culprits behind a non‑working oven is the oven igniter, the heating element that glows red to ignite the gas burner inside a traditional range. When the igniter is cracked, corroded or simply worn out, the gas never lights and you’ll hear a faint clicking without a flame. The same principle applies to a gas hob, the cooking surface that relies on a spark plug or hot surface igniter to start each burner. If the spark doesn’t jump, the burner stays cold and you’re left with a cold pan on a cold stovetop.
Understanding why an igniter fails helps you avoid costly call‑outs. Heat fatigue is the biggest enemy – repeated heating and cooling cycles cause the ceramic or metal core to develop micro‑fractures. Moisture is another sneaky factor; steam can seep into the igniter housing and short the circuit. Finally, electrical supply problems such as a blown fuse or a loose connection can make the igniter appear broken when the issue is actually in the wiring.
Diagnosing a bad igniter begins with a simple visual check. Look for obvious cracks, discoloration or a burnt smell. Next, use a multimeter to test continuity: a good igniter will show a low resistance reading (usually under 200 Ω). If the reading is infinite, the igniter is open and needs replacement. Many technicians also perform a voltage drop test while the appliance is running to see if the igniter is receiving the proper power.
Once you confirm the fault, you have two paths: DIY replacement or professional appliance repair, a service that includes part sourcing, safety testing and warranty protection. DIY works best for accessible models with clear service manuals. You’ll need a screwdriver set, a new igniter that matches the make and model, and safety gloves. Remember to turn off the gas supply and unplug the appliance before you start. For built‑in ovens or gas hobs hidden behind panels, a pro can avoid accidental damage to surrounding wiring or gas lines.
Cost-wise, a replacement igniter usually runs between £20 and £60, depending on the brand. Labor adds another £50‑£100 if you hire a certified technician. Some homeowners find the upfront DIY expense worth it, especially when the appliance is otherwise in good shape. However, if the oven or hob is older than ten years, you might weigh the total repair cost against the efficiency gains of a new, energy‑saving model.
Prevention is easier than repair. Keep the igniter clean by wiping away food splatter and grease after each use. Schedule a yearly safety check for gas appliances; a professional can spot early signs of wear before they cause a failure. Also, avoid abrupt temperature changes – let the oven cool down before cleaning, and never pour cold water on a hot igniter.
Below you’ll find a collection of articles that dive deeper into each of these points – from step‑by‑step testing guides to cost‑benefit analyses of repairing versus replacing. Whether you’re fixing a stubborn oven, a misbehaving gas hob, or just want to understand how igniters work, the posts ahead give you practical insights and clear next steps.
Worried about your gas oven acting up? This article breaks down the telltale signs of a faulty gas oven igniter, so you don’t waste time replacing parts you don’t need. Learn the specific symptoms, why they're happening, and what you can actually do about it. Get tips for quick checks you can do at home and advice on when it’s better to call in a pro. Save yourself frustration—and maybe dinner.
