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    "On average, your oven is colder than its target temperature" - Why? I can see the average error being 0 (over a long enough period of time), or below 0 (avg temp colder than setpoint), or above 0 (temp above setpoint), depending on the exact characteristics of the oven. Is there something about a typical electric oven that will cause the "cooler on average" case? Commented Dec 15, 2023 at 23:32
  • @WayneConrad because the element cycles off when the desired temperature is reached, not after, unless you configure it to be so.
    – AdamO
    Commented Dec 16, 2023 at 0:49
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    The element cycles off at whatever temperature it's calibrated for, which may or may not be the desired temperature.
    – barbecue
    Commented Dec 16, 2023 at 16:47
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    It does not seem likely that every single electric oven cycles off exactly at the temp. Many similar things are configured to go slightly over, like some home thermostats. And it seems like there is more downside to being consistently under than there is to being mostly average. (I.e., the cake isn't going to burn at a momentary 355.) Commented Dec 16, 2023 at 20:25
  • @MatthewRead The relay that switches the element does turn off when the oven reaches the stetpoint, but the element doesn't cool off immediately--there's thermal inertia. That doesn't prove that the average temp will be at setpoint, of course--more data would be needed to know that. But it's not impossible. Commented Dec 18, 2023 at 15:14