Toaster Oven Not Heating? What to Check

On this page (10 sections)

1. Toaster oven not heating: start with the basic checks
2. When the power light is on but the oven stays cold
3. Check the real temperature when a toaster oven is not heating
4. Why a toaster oven can seem to stop heating mid-cook
5. When it heats, but not enough
6. When the oven gets no heat at all
7. Keep crumbs and grease out of the heat
8. Checking the settings again before you give up
9. When to stop troubleshooting and call for service
10. What to do if your toaster oven is not heating

A toaster oven not heating is frustrating, but the cause is often a simple setting or a loose plug. Work through the easy checks first, and stop if you see signs of damage.

This checklist starts with the basics, moves to a thermometer check and ends with the signs that mean it's time to stop. Each step is safe to do with the oven unplugged or at its normal settings.

Toaster oven not heating: start with the basic checks

Plug the oven into an outlet you know works, and make sure the plug sits firmly in the wall. If you're not sure the outlet is live, test it with a lamp or a phone charger.

Check the timer next. Black+Decker says its TO1313SBD won't operate unless the timer is set or stay-on is selected, so a timer left at zero can look like a dead oven.

Then check the function. Toast, bake and broil use the heating elements in different ways, so pick the function you want and set a temperature.

Close the door fully as well. Some models use a door sensor to decide when to run, so a door that isn't fully shut can stop the heat.

When the power light is on but the oven stays cold

A lit display or a power light shows that the controls have power. It doesn't prove that the heating elements are running.

Check the function you picked, and make sure a temperature is set and the timer is running. Then give the oven a few minutes to heat before you judge it.

If it still stays cold, unplug it and move on to the signs of trouble below.

Check the real temperature when a toaster oven is not heating

A thermometer tells you more than the dial does. Place one in the center of the rack, let the oven run at its dial setting for at least 10 minutes, and read the temperature.

These three oven thermometers read the temperature inside the cavity, so check that the one you pick fits your oven.

Why a toaster oven can seem to stop heating mid-cook

A timer that runs out, a dial turned to a lower setting or a door that opened during the cook can make it look as if the oven has stopped. Check those first, since they're the most common reasons for a cook that goes quiet halfway through.

If the oven stays cold after you reset the timer and the dial, move on to the thermometer check. A reading that's still cold points to the oven itself rather than the controls.

When it heats, but not enough

Some toaster ovens run cooler than the dial shows. Black+Decker says its TO3250XSBD runs below its set point because of how its heating elements work, so a thermometer is the only way to know the real temperature.

Adjust the dial by the amount the thermometer shows, then check again after another 10 minutes. If the gap stays large, the oven may need service.

When the oven gets no heat at all

If the oven stays cold after the basic checks, the fault may be a heating element, a thermostat or an internal fuse. Those parts sit inside the housing, and a live part can cause a shock.

Don't open the housing or test the parts while the oven is plugged in. Unplug it, and contact the maker or a qualified repair shop for the next step.

Signs of trouble when a toaster oven is not heating

Stop using the oven if you smell burning, see sparks or feel a hot plug or cord. Unplug it and let it cool before you move it.

Those signs mean the oven needs service, even if it heats again after a reset. Don't keep using it while you wait.

Keep crumbs and grease out of the heat

Crumbs and grease in the tray can burn and smoke, which can make an oven seem faulty. Empty the crumb tray after each use and wipe the interior once it's cool.

Our guide to cleaning a toaster oven covers the safe steps for the interior and the tray. Check the manual before you put anything inside the oven that isn't the pan or rack it came with.

Checking the settings again before you give up

Set the function, the temperature and the timer again, then start a fresh cook. A reset can clear a setting that was left at a low point or set to the wrong function.

Try a short test at a higher setting, and watch the thermometer as the oven warms. If the reading doesn't rise at all, stop and unplug the oven.

When to stop troubleshooting and call for service

If the checks in this guide don't bring heat back, the next step is the maker or a qualified repair shop. Keep the receipt and the warranty card, since the terms can decide whether service is covered.

Don't keep trying repairs yourself with the oven plugged in. Repair work on the heating parts or the internal fuse needs the right tools and training.

For the wider buying picture, our air fryer toaster oven guide covers what to look for in a replacement.

What to do if your toaster oven is not heating

Start with the outlet, the timer and the dial, then confirm the temperature with a thermometer. If none of those steps brings heat back, stop using the oven and contact the maker.

If you need a replacement while you sort it out, the best air fryer toaster ovens roundup shows the models we'd compare. For the power numbers behind each model, read the toaster oven wattage guide.

Frequently asked questions

Why does my toaster oven turn on but not heat?

The most common causes are a timer that isn't set, a dial on the wrong function, or a door that isn't fully closed. Work through those first, then check the temperature with a thermometer.

Can I fix a toaster oven that won't heat myself?

Start with the settings and the outlet. Opening the housing or testing the heating parts while the oven is plugged in is dangerous, so contact the maker or a qualified repair shop for anything beyond those checks.

How do I know if a toaster oven is heating correctly?

Put an oven thermometer in the center of the rack, let the oven run at the dial setting for at least 10 minutes, and compare the two readings. A large gap means the dial and the real heat don't match.

Should I unplug a toaster oven that smells like burning?

Unplug it and let it cool, then stop using it until someone checks it. Burning smells, sparks or a hot plug all mean the oven needs service.