Short answer: an oven that won't heat is almost always a burned-out bake element (electric), a failing igniter (gas), or a bad temperature sensor. These are among the most straightforward appliance repairs. Before assuming the worst, check the breaker and the oven's own clock/settings — a surprising number of "broken" ovens are just locked out by the timer.
Start here: the free checks
- Tripped breaker. Electric ranges need a dedicated 240V circuit. If one leg trips, the stovetop burners may still work while the oven has no heat. Reset the double-pole breaker completely.
- Timer/control lock. Many ovens have a "delay start" or "sabbath mode" that prevents heating until a set time. Check the clock display for flashing icons and consult the manual for the exit code.
- Self-clean lockout. An oven can lock itself after a self-clean cycle until it cools completely. If it was recently cleaned, wait an hour and try again.
- Wrong mode selected. Make sure it's set to Bake, not just Broil, Warm, or Convection-only with the element off.
1. Bake element burned out (electric)
Open the cold oven and look at the element on the bottom (and the broil element at the top if you're testing broil too). A burned-out element usually has a visible crack, hole, or blister. Set it to bake and watch — a working element glows orange within 60–90 seconds. No glow, no heat. This is the single most common electric oven failure and a straightforward replacement.
2. Weak or failed igniter (gas)
On a gas oven, the igniter has two jobs: it glows hot enough to light the gas and it draws enough current to open the gas safety valve. When it weakens, it may glow faintly but never get hot enough to open the valve — so you get clicking and a faint glow with no flame. Replace the igniter, and the gas valve problem usually resolves itself.
3. Temperature sensor off or failed
The oven sensor (a thin probe usually at the back of the oven cavity) tells the control board the actual temperature. If it drifts or fails, the oven thinks it's hotter than it is and stops heating early, or it just reads an error and locks out entirely. Most sensors are a plug-and-replace part.
4. Control board failure
If the display is blank or showing a fault code, and the element and sensor check out, the control board may have failed — often after a power surge. Boards are model-specific and run $50–$200 for parts; a tech should confirm the diagnosis before you order one.
5. Gas supply or valve (gas ovens)
If the igniter is strong (bright orange glow, opens quickly) but there's no flame, the gas supply itself or the valve may be the issue. Confirm the gas shutoff behind the range is fully open. An actual failed valve is less common than a bad igniter but does happen.
When to call a pro
DIY the safe stuff: reset the breaker, clear timer locks, and visually inspect the bake element. Replacing an electric bake element is one of the most DIY-friendly appliance repairs if you're comfortable unplugging the range and removing two screws.
Call a tech for: a gas oven with igniter or valve issues, any control board diagnosis, or if you're not sure what you're looking at — gas and 240V aren't the place to guess.
For the cost math, see our appliance repair cost guide and repair vs. replace. GUIFIX handles oven and stove repair across all our markets — $75 service call, written quote, 90-day warranty.
Frequently Asked Questions
Why is my oven not heating up?
On electric ovens, the bake element or broil element has usually burned out — you can often see a visible break or blister on the coil. On gas ovens, a weak or failed igniter is the most common cause. A bad temperature sensor or control board can also prevent either type from reaching the set temperature.
How do I know if my oven bake element is bad?
Open the oven cold and look at the element — a burned-out element usually shows a visible crack, hole, or blister. If it looks intact, set the oven to bake and watch it for a minute; a working element glows bright orange. No glow means no heat. A multimeter confirms continuity if you're not sure.
Why does my gas oven click but not light?
The igniter is glowing and clicking but not sparking hot enough to open the gas valve. On most gas ovens, the igniter also acts as a safety sensor — if it's too weak to draw the current required to open the gas valve, the oven won't light. The igniter is the fix, not the valve.
Is it worth repairing an oven that won't heat?
Almost always yes. A bake element or igniter is one of the most cost-effective appliance repairs — parts are usually $20–$80, and ovens last 13–15 years. Even with labor, it's typically $100–$250. Replace only if the range is over 12 years old and has multiple issues.
Why does my oven take forever to preheat?
Slow preheating usually means the bake element is partially burned out (one section gone), the temperature sensor is reading low, or — on gas — the igniter is weak and slow to open the valve. A full preheat should take 15–20 minutes for most ovens; 45+ minutes means something's wrong.
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