Never thought about it but makes sense to check the operating temp control of you oven for exactness. Attached full article and link with vid.
https://www.hometalk.com/34936178/how-to-correct-your-oven-s-temperature?"How to Correct Your Oven's Temperature
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ChickFix
ChickFix
Hometalker Canton, GA
Have you ever noticed that food cooked in your oven comes out overcooked or undercooked, even though you followed the directions perfectly? It's quite possible that your oven isn't baking at the right temperature! Whether your oven is gas or electric, or has knobs or a digital display, calibrating it is easy!
Time: 1 HoursCost: $8Difficulty: Easy
how to correct your oven s temperature
STEP 1: Purchase an oven thermometer, which can be found for less than $10 at most grocery stores and home improvement stores.
how to correct your oven s temperature
STEP 2: Set your oven to 350 degrees
how to correct your oven s temperature
STEP 3: Place the oven thermometer in the oven, and wait 15-20, or until the oven preheat procedure is complete.
how to correct your oven s temperature
STEP 4: Check the oven thermometer and determine the actual temperature inside your oven. If it does not read 350 degrees, subtract the two numbers from each other to determine how far off the oven is, and in which direction. (My thermometer came out at 420 degrees -- 70 degrees too hot!)
how to correct your oven s temperature
FOR OVENS WITH MANUAL DIALS/KNOBS:
Pull off the oven temperature control knob, and look on the back. There should be a small dial to adjust the knob to make the oven hotter or cooler. You may need to use a screwdriver to loosen and adjust the dial.
how to correct your oven s temperature
Place the thermometer back into the oven, and set to 350 degrees. Wait another 15-20 minutes to allow the oven to preheat fully.
how to correct your oven s temperature
Remove the thermometer and check the temperature. You may need to repeat the process a couple of times to get the temperature just right. (Mine took three tries!)
FOR OVENS WITH DIGITAL CONTROL PANELS:
The calibration procedure may vary a bit from brand to brand. You can find instructions in your owner's manual, or visit the manufacturer's website.
For a GE oven, the process is as follows:
1. Press the "Bake" and "Broil" button at the same time until "SF" appears on the control panel.
2. Press the "Bake" button again until "00" appears on the control panel.
3. Use the up-and-down arrows to adjust the temperature accordingly.
4. Press the "Start" button to save your changes.
how to correct your oven s temperature
FOR OVENS WITH A DIGITAL CONTROL PANEL:
Calibration procedures may vary a bit from oven to oven. You can find the procedure specific to your particular oven in your owner's manual, or by visiting the manufacturer's website.
For a GE oven:
1. Press "Bake" and "Broil" at the same time until "SF" appears on the display.
2. Press "Bake" again until "00" appears on the display.
3. Use the up and down arrows to adjust the temperature accordingly.
4. Press "Start" to save your changes.'