For electric ovens, the most common reason for slow preheating is a malfunctioning heating element. If the element isn’t working properly, it won’t generate enough heat to get the oven to the desired temperature quickly. You can check the heating element for any visible signs of damage like cracks or breaks. A multimeter test can confirm if the element is still functioning.
Your oven uses a temperature sensor to regulate how hot the oven gets. If this sensor is malfunctioning, the oven might not heat as quickly, or it might be inaccurate, causing it to take longer than normal to reach the correct temperature. Similarly, a faulty thermostat could also be to blame. If the oven isn’t detecting or regulating the temperature properly, it will struggle with preheating.
The door seal is crucial for keeping the heat inside the oven. If the seal is worn, torn, or dirty, it may allow heat to escape, preventing the oven from heating efficiently. This means the oven has to work harder and longer to reach the set temperature.
A weak electrical supply or issues with the oven’s wiring could cause your Whirlpool oven to take longer to preheat. If the oven isn’t getting the proper voltage, it may not be able to heat up as quickly as it should.
If your oven’s ventilation system is blocked or clogged, it can prevent heat from circulating properly, making it harder for the oven to reach the desired temperature quickly. Check the vents and clean them if necessary.
If you’ve been using your oven frequently, it may take longer to preheat, especially if the oven isn’t given enough time to cool down between uses.
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