How to Preheat an Oven

Set the temperature before the food goes in

Preheating is the warmup before cooking, not a separate cooking cycle. Once Bake starts, the oven heats toward the temperature you selected. We’d set the rack first, because moving it after the oven is hot brings your hands close to hot metal.

1. While the oven is cool, put the rack where the recipe calls for it. If you'll verify the temperature, place an oven-safe thermometer near the center of that rack now. Remove unused racks and any stored pans or baking stones. Keep a stone in place only when the recipe or oven mode tells you to preheat it.
2. Select Bake for a conventional baking recipe, or the mode the recipe specifies. Set its cooking temperature. If the display starts at 350°F, change that default when the recipe calls for another temperature.
3. Press Start if the controls require it. On an oven with mode and temperature dials, turning both dials normally starts heating. Look for a preheat display, heating light or the first signs of warmth to confirm it began.
4. Keep the door closed while the empty oven heats. Opening it releases heat and extends the wait.
5. At the ready cue, open the door, put the food on its rack and close the door promptly. Start the recipe’s cooking timer when the food goes in. For temperature-sensitive baking, use the thermometer check below before loading.

How long to wait

From cold, allow about 10 to 20 minutes at 350°F in a full-size household oven. Roughly 12 to 15 minutes is a useful starting expectation; gas ovens and electric ovens with hidden bake elements can take 15 to 20 minutes. At 425°F to 450°F, plan on roughly 20 to 25 minutes in a conventional full-size oven. Follow the oven’s ready cue when it has one.

A higher temperature or larger cavity takes longer to heat. Extra racks and heavy cookware absorb heat during warmup, while each door opening lets heat out. If a clean, empty oven with one rack has no ready signal after about 20 minutes at 350°F, run the closed-door test below. Some ovens normally take a little longer.

If your oven has dials and no beep

Turn the mode dial to Bake and the temperature dial to the recipe setting. Heating normally starts without another button. A light labeled Preheat or Thermostat may go out when the oven reaches its setting, then turn on and off as heat cycles. A light labeled Oven On can stay lit simply because the oven is switched on.

With no useful light, allow 10 to 15 minutes at 350°F before ordinary baking, and longer if your oven has a slow warmup. For precise baking, put an oven-safe thermometer near the center of the rack where the food will cook before you switch on the oven. Read it through the window when you can, keeping the door closed until it approaches the recipe temperature. At 425°F to 450°F, use the 20-to-25-minute range as a planning time and confirm the temperature the same way.

If the oven warms normally but has stopped making its usual sound, turn its sound or volume setting back on and watch the display or ready light during the next preheat. The alert is restored when the tone sounds or the ready indicator appears; if heat is normal but the alert remains absent, use the thermometer until that separate fault is addressed.

If it beeps before the thermometer reaches the setting

The oven’s sensor triggers the ready beep. A rack thermometer reads a different spot and may respond more slowly. After preheating, heat cycles above and below the setting.

Place an oven-safe thermometer at the center of the cooking rack before heating, then read it through the window at the beep and over more than one heat cycle, as shown in Maytag’s oven temperature check (opens in a new tab). For a delicate bake, we’d leave the door closed until the thermometer approaches the recipe temperature. A reading about 15°F or more from 350°F at the beep calls for another look across several cycles, especially if familiar bakes repeatedly come out too dark or too pale.

If settled readings stay substantially off and familiar bakes repeatedly fail, use the service decision below.

If preheating is slow or the oven stays cool

Start with the controls, then the door and power. Those checks separate a warmup that never started from an oven that starts heating but loses heat or cannot reach the setting.

1. Select Bake, enter 350°F for a test and press Start if prompted. A preheat display or warming cavity means heating began. If it stays cool, cancel any Delay Start, turn off Control Lock or Demo Mode in Settings, and set a flashing or unset clock. Try Bake again. If heating still does not begin, continue to the door and power checks.
2. Close the door fully and make sure a self-clean latch is unlocked. Cancel Bake and let the oven cool, then remove spare racks and ordinary cookware. Restart a closed-door preheat. A return to its usual ready time points to heat loss or extra material in the cavity. If it remains slow, measure one preheat.
3. After a power interruption or a blank display, look at the household range breaker. For an electric range with a two-pole breaker, turn both poles fully off, wait 30 seconds, then turn them back on. Reset the clock and try Bake. If the breaker trips again, stop resetting it; an electrician needs to find the supply fault.
4. If an error or door-lock code appears, record it. Clear or unlock it using the owner procedure for that exact code, then try Bake once. Normal preheating with no returning code means the reset worked. A code that returns belongs in the service report.
5. From cold, leave one rack in an otherwise empty oven and place an oven-safe thermometer at its center. Set Bake to 350°F, press Start if required, keep the door closed and time the ready cue while watching the thermometer. Heat that reaches the setting after a longer wait is different from a cavity that stays cool or warms but never approaches 350°F.

The separate oven not heating guide covers a cavity that still stays cool after these tests.

If a gas oven stays cold

With the controls running and no gas odor, a closed gas supply or failed ignition can leave the cavity cold. Use the oven’s installation instructions to identify its accessible gas shutoff. A range can have a separate oven shutoff even while its cooktop burners work.

1. With no gas odor, confirm that the accessible oven supply shutoff is open. Select Bake, set the temperature and press Start if required. If the oven begins warming and reaches its ready cue, the supply check resolved the problem.
2. If it remains cold, observe the igniter or burner response only through the viewing point your oven provides. Turn Bake off if the burner never lights. A gas igniter, its circuit or the controls need diagnosis.

If an electric oven has power but little Bake heat

A failed lower bake element can leave an electric oven cool or make preheating unusually slow. On an oven with an exposed element, a crack or melted spot is a visible clue. A hidden element cannot be inspected from inside the cavity.

1. Let the oven cool, switch off its breaker and inspect only the visible lower element for a crack, break or melted spot. Visible damage identifies a failed element; do not resume baking with it.
2. If the visible element looks sound, restore power and run Bake once more only if the element has not smoked, sparked or arced and the breaker has not tripped. Normal heating means the earlier control or power check helped. Little heat despite power points to the element circuit, sensor or control and ends the owner checks.

If the element smokes, sparks or arcs during a test, turn the oven off, disconnect power at the breaker and arrange repair. A damaged element can rupture during heating and needs repair before the oven is used again.

If the checks still leave you without reliable heat

No heat, a cavity that never approaches the setting, a repeatedly slow preheat or a recurring error ends the owner checks. Stop using one that heats uncontrollably, arcs or repeatedly trips its breaker.

The U.S. Consumer Product Safety Commission’s oven fire advice (opens in a new tab) explains the closed-door response. For a heating fault, book an appliance repair technician or the maker’s service network. Report the selected mode and temperature, whether you pressed Start, elapsed time, rack-level thermometer readings, alert behavior and any error code. Mention a power interruption, gas odor or breaker trip; a repeatedly tripping breaker calls for an electrician.

Make the next preheat easier to judge

Once the oven is heating normally, note how long it takes your empty oven to signal ready at 350°F. That gives you a useful comparison if it slows later.

When you switch between regular Bake and convection, select the mode named by the recipe before you set the temperature. If you’re unsure which mode it means, how a conventional oven works explains the difference.

Other preheating questions