# Oven Pre-Heaing

**URL:** <https://boards.straightdope.com/t/oven-pre-heaing/567673>\
**Category:** Factual Questions\
**Created:** [January 15, 2011, 2:49am UTC](https://boards.straightdope.com/t/oven-pre-heaing/567673 "2011-01-15T02:49:13Z")\
**Posts on this page:** 2\
**Page:** 2

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**Author:** ![CookingWithGas](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cookingwithgas/32/485_2.png) [@CookingWithGas](https://boards.straightdope.com/u/CookingWithGas)\
**Post date:** [January 17, 2011, 2:19am UTC](https://boards.straightdope.com/t/oven-pre-heaing/567673/21 "2011-01-17T02:19:58Z")

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> [@RickJay](#):
>
> The thing is, if I preheat my oven before putting in a roast, when I open the oven to put the roast in **all the hot air rushes out**. The oven then takes more time to get back up to the set temperature. So I’m failing to see the point of preheating.

Air doesn’t hold all that much heat. The metal oven walls and parts inside hold a lot of heat. Same reason people shouldn’t get too wound up about opening the fridge door for a few seconds.

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<div class="post-metadata">

**Author:** ![CookingWithGas](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/cookingwithgas/32/485_2.png) [@CookingWithGas](https://boards.straightdope.com/u/CookingWithGas)\
**Post date:** [January 17, 2011, 3:08am UTC](https://boards.straightdope.com/t/oven-pre-heaing/567673/22 "2011-01-17T03:08:41Z")

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> [@Peanuthead](#):
>
> Are you nitpicking my nitpick? 🙂
> 
> From the dictionary:
> 
> Verb: nit’ pik  
> Be overly critical; criticize minor details

I see that I’m late on this but if you’re going to rebut with a dictionary then you need to check it for “preheat” first 🙂

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