Oven Not Heating? Causes, Costs, and What to Try First
From LA appliance technicians. Different causes for gas vs. electric ovens, plus what's specific to premium brands.
Electric vs. gas — fundamental difference
Diagnosing “oven not heating” starts with knowing whether your oven is gas or electric. The failure modes are entirely different.
Electric ovens
Electric ovens use heating elements — high-resistance metal coils that glow red when powered with 240V. Two elements typical:
- Bake element: bottom of oven, primary heat source for baking
- Broil element: top of oven, used for broiling
Most common electric-oven failure: bake element burns out. Visible signs: breaks or burns on the element coil, no red glow when oven called on, possibly tripping breaker.
Gas ovens
Gas ovens use an igniter that glows hot when current passes through. The igniter heats up enough to (a) trip the gas valve’s safety circuit, releasing gas, and (b) ignite that gas at the burner.
Most common gas-oven failure: weak igniter. It glows but doesn’t get hot enough to open the gas valve. Result: no flame, no heat.
The 4 main causes for each type
Electric oven ranked causes
| Likelihood | Cause | Typical cost |
|---|---|---|
| 40% | Bake element burned out | $240–$340 |
| 25% | Temperature sensor (thermistor) drift | $200–$320 |
| 20% | Control board failure | $350–$650 |
| 10% | Thermal fuse blown (often from self-clean) | $150–$240 |
| 5% | 240V circuit issue | $100–$400+ (depends on source) |
Gas oven ranked causes
| Likelihood | Cause | Typical cost |
|---|---|---|
| 40% | Weak or failed igniter | $220–$340 |
| 20% | Gas valve safety circuit | $300–$520 |
| 20% | Temperature sensor failure | $200–$320 |
| 15% | Control board failure | $350–$650 |
| 5% | Gas supply issue | $0–$200 (often free re-light) |
Premium brand specifics
Wolf
- Temperature sensor drift: predictable failure at 8-10 years on M-series. Symptom: oven runs hotter or colder than set point. Replacement $280-$450.
- Convection fan motor: whining noise during convection mode. Replacement $320-$520.
- Control board: M-series ovens have proprietary control boards. Replacement $480-$780.
Viking
- Igniter failure: Professional series igniters fail predictably. Replacement $240-$420.
- Temperature sensor: similar to Wolf pattern. Replacement $280-$450.
- Door hinge wear: heavy professional-grade doors stress hinges over time. Replacement $320-$580.
Thermador
- Touch panel failure: Masterpiece and Professional series have premium electronic interfaces. Replacement $420-$780.
- ExtraLow simmer control: specific to Pro Grand ranges with the ExtraLow feature. Replacement $320-$520.
- Star Burner igniters: the 4-prong Star Burner has more igniter components than standard. Individual igniter replacement $240-$420.
The self-clean warning
The single biggest preventable oven failure we see: customers running self-clean cycles on ovens 5+ years old. The 900-1,000°F temperatures stress:
- Thermal fuses (most likely to blow)
- Control board components (heat-sensitive electronics)
- Door latch motors (sometimes seize closed)
- Wiring insulation (can melt)
After-self-clean repairs typically run $400-$800. Avoid by:
- Don’t run self-clean on ovens over 5 years old
- Clean with baking soda, water, and a damp cloth instead
- If you must self-clean newer ovens, do it after a cool period (not back-to-back with heavy cooking)
DIY checks (safe with oven cool)
- Look at the bake element (electric). Visible breaks or burns? That’s your answer.
- Listen during preheat (gas). Do you hear the igniter click and see the glow? If yes but no flame, igniter is weak. If no click or glow, igniter or control issue.
- Test door closure. Does the door close properly? An open door switch can prevent heating.
- Check the circuit breaker (electric). Tripped breaker means no power to elements.
If these don’t reveal the issue, professional diagnostic is needed.
When replacement makes sense
For mainstream ovens 12+ years old: if repair quotes over $500, replacement may make more sense. New mainstream ranges $1,000-$3,500; new wall ovens $1,500-$3,500.
For premium ovens (Wolf, Viking, Thermador, Miele): repair almost always wins given $4,000-$15,000+ replacement costs. See our oven repair service and Wolf repair page. Even $1,500-$2,000 repairs on premium ovens typically deliver excellent value.
Call (213) 205-2055
Or text a photo of your oven with the model-number visible (typically inside the door frame or on the side wall of the cavity).
FAQ
Why is my oven not heating?
For electric ovens: (1) Bake element burned out (most common — visible breaks or burns on the element). (2) Temperature sensor (thermistor) drift giving the control board incorrect readings. (3) Control board failure. (4) Thermal fuse blown from overheating. For gas ovens: (1) Weak or failed igniter (most common — igniter glows but doesn't get hot enough to open the gas valve). (2) Gas valve safety circuit issue. (3) Temperature sensor failure. (4) Control board failure. About 70% of 'not heating' calls trace to the first two causes for each type.
How much does oven repair cost in Los Angeles?
Most oven repairs run $200–$650. Bake element replacement (electric) $240–$340. Igniter replacement (gas) $220–$340. Temperature sensor $200–$320. Control board $350–$650. Premium brands (Wolf, Viking, Thermador): typically 20-40% higher due to parts costs — $280–$780 typical range. Built-in wall ovens add roughly $80-$120 to equivalent freestanding repair costs due to access. Our $85 service call is waived with completed repair.
Why won't my oven reach the set temperature?
Most common cause: temperature sensor (thermistor) drift. The sensor reports to the control board that the oven is hotter than it actually is, so the heating element shuts off too early. Replacement runs $200-$320 typically. Second most common: heating element partially failed (electric) — element heats but not to full temperature. Visible: element shows breaks or discoloration.
Why did my self-clean cycle break the oven?
Unfortunately common. Self-clean cycles run at 900-1,000°F, well above normal cooking temperatures. The extreme heat stresses thermal fuses, control boards, door latch motors, and wiring insulation. Common post-self-clean failures: thermal fuse blown ($150-$240), control board damaged ($350-$650), door latch motor failed ($280-$420). We strongly recommend NOT running self-clean on ovens older than 5 years — use baking soda and water cleaning instead.
Do you repair Wolf and Thermador ovens?
Yes. Wolf wall ovens (M-series, L-series) and Thermador ovens (Masterpiece, Professional series, Pro Grand) common in Westside LA premium kitchens. Wolf-specific issues we service: temperature sensor drift (predictable at 8-10 years), convection fan motor failure, control board on M-series. Thermador-specific: Masterpiece touch panel failure, ExtraLow simmer control on Pro Grand. Premium parts ship from Sub-Zero Group (Wolf) and BSH Hausgeräte (Thermador) — typically 2-5 day lead times for non-stock parts.
How long should an oven last?
Mainstream ovens (Samsung, LG, GE, Whirlpool, KitchenAid) typically last 10-15 years. Premium ovens (Wolf, Viking, Thermador, Miele) routinely run 20+ years. The electronic components (control boards, sensors) fail before the mechanical components (cavities, doors, heating elements) — meaning premium ovens often justify multiple repair cycles over their lives.
What's the difference between igniter and heating element issues?
Igniters are gas-oven specific. They're a small ceramic-and-wire component that glows hot when current passes through. The heat trips the gas valve safety circuit, releasing gas which ignites at the burner. Weak igniters glow but not hot enough to open the gas valve — gas never flows. Heating elements are electric-oven specific. They're metal coils on the bottom of the oven (bake element) and top (broil element) that glow red when powered. Visible breaks or no glow = failure. Each requires different replacement procedures and parts.
Need an appliance fixed in Westside LA?
Call (213) 205-2055 or text a photo of your appliance.