Oven Takes Forever to Preheat? It's Usually the Igniter

Gas ovens use a glow-bar igniter that weakens with age — it still glows, but not hot enough to open the gas valve quickly. The symptom is an oven that takes 20+ minutes to preheat or never quite reaches set temperature. Electric ovens have the same story with bake elements that blister or break. Both are inexpensive parts and quick repairs — far cheaper than a new range.

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