Oven takes too long to preheat

First confirm it is really slow: many ovens take around 10-15 minutes to reach 350°F, longer with large cavities or convection preheat. On electric ovens a partly failed bake element or a dead broil element (used during preheat on many models) slows preheat. On gas ovens a weak igniter that glows but draws too little current opens the gas valve late or not fully.

Single source ~45 min moderateBrands: All

Before you start

Unplug or turn off the range breaker before removing elements or the igniter.
Gas valve and gas pressure work is blocked: refer to a licensed technician.
Igniter current tests are live tests: caution.

Diagnostic steps

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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