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Q&A

Comments on Why does a "rapid" preheating mode require no more than one oven rack?

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Why does a "rapid" preheating mode require no more than one oven rack?

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I have a Whirlpool wall oven with (optional) convection settings. It has three racks. The obvious place to store oven racks is, of course, in the oven.

The oven has two preheating modes, "rapid" and "standard". The documentation says to use the "rapid" mode with only one rack (removing the other two) and the "standard" mode otherwise. Both modes run the fan audibly.

Why does the presence of more or fewer racks make a difference in preheating? I've found explanations online about using only one rack to improve circulation when cooking -- sure, that's plausible, but we're talking about preheating here, not cooking. Doesn't it use a thermostat to determine when the oven is up to temperature?

I would naturally prefer faster preheating to slower, but I want to keep all the racks in the oven. What can go wrong in using the "rapid" mode with all racks in place?

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1 comment thread

What kind of racks? (2 comments)
What kind of racks?
Olin Lathrop‭ wrote over 2 years ago

Are your racks the wire kind, or more solid? If more solid, I can see how they would obstruct air flow. If it's the wire kind, I have no idea. Doesn't make any sense to me either. I'm curious to hear the answer too.

Monica Cellio‭ wrote over 2 years ago

They're not sheets, if that's what you mean. They're a fairly heavy wire, but it doesn't impede air flow.