Molly Ayala
Ovens are not precision appliances, and their temperatures can vary by as much as 90 degrees Fahrenheit. This can be a problem when preparing meals that require specific temperatures, such as baked goods. To check the temperature of an electric oven, you can use an oven thermometer, which can be hung in the centre of the middle rack. You can then preheat your oven to 350°F (176.67°C) and wait for at least 20 minutes before taking a reading. You can also use the oven's in-built thermostat, which utilises a sensing bulb containing a liquid that expands and contracts with temperature changes. If the oven is not reaching the desired temperature, you may need to adjust the thermostat manually or use the control panel to recalibrate the oven.
Characteristics and Values Table
| Characteristics | Values |
|---|---|
| Oven type | Electric oven |
| Oven controls | Electronic control board and temperature sensor, or a switch-based thermostat and sensing bulb assembly |
| Temperature accuracy | May vary by up to 90 degrees Fahrenheit between different ovens |
| Oven thermometer | Recommended for accurate temperature readings; hang in the center of the middle rack |
| Oven calibration | Adjust the off-set by +/- 5-20 degrees Fahrenheit |
| Oven hot/cold spots | Test with parchment paper and sugar or a baking sheet with bread |
| Oven temperature fluctuations | Reduce with a baking stone or steel |
| Oven temperature sensor | Check if defective |
| Oven temperature dial | May need to be adjusted to match the internal temperature |
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What You'll Learn
Use an oven thermometer
Oven thermometers are a great way to check the temperature of your electric oven. They are inexpensive and can be purchased online or at most hardware stores. Here is a step-by-step guide on how to use an oven thermometer to check your oven's temperature:
- Preheat your oven to 350°F (176.67°C). If you have a digital oven, wait for the signal that indicates the oven has reached the desired temperature. For non-digital ovens, let the oven preheat for at least 20 minutes.
- Place the oven thermometer in the centre of the middle rack. Ensure that the thermometer is not touching the oven walls or racks, as this can affect the accuracy of the reading.
- Close the oven door and wait for another 20 minutes. Taking a longer reading will give you a more accurate average temperature.
- After 20 minutes, open the oven door and read the temperature on the oven thermometer. Be careful not to touch the thermometer or any oven racks, as they will be hot.
- Note the temperature reading. If you suspect your oven may have hot or cold spots, consider repeating this process with the thermometer placed in different locations within the oven.
- Adjust your oven temperature accordingly. If the oven thermometer reading is lower than the set temperature, increase the dial setting by the same number of degrees. For example, if your oven is set to 350°F but the thermometer reads 330°F, adjust the dial to 370°F.
- Repeat the process to confirm that your oven is now heating to the correct temperature.
It is important to note that oven thermometers may not always provide an exact temperature reading, but they can help you determine if your oven is heating to approximately the correct temperature. Additionally, oven temperatures can fluctuate during the cooking process, so using an oven thermometer as a guide and adjusting as needed based on your food's progress is often the best approach.
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Check the thermostat
Checking the thermostat is a crucial step in ensuring your electric oven is functioning correctly. Most modern ovens use an electronic control board and a temperature sensor to regulate the oven temperature. However, older or less expensive models rely on a switch-based thermostat and sensing bulb assembly. Here's a detailed guide on checking the thermostat of your electric oven:
- Understanding the Thermostat's Function: The thermostat plays a vital role in maintaining the desired temperature in your oven. It contains a sensing bulb filled with a liquid that expands when heated and contracts when cooling down. This expansion and contraction trigger a capillary system to cycle the oven's heating element on and off, thus regulating the temperature.
- Preheating the Oven: Before checking the thermostat, you need to preheat your oven. Set the oven temperature to 350°F (176.67°C) and allow it to preheat for at least 20 minutes. This initial heating period is crucial for stabilizing the temperature and ensuring accurate readings.
- Placing the Oven Thermometer: Obtain an oven thermometer, preferably one with a large, legible display. Place the thermometer in the center of the middle rack of your oven. This position allows for the most accurate temperature reading. If you have a window on your oven door, you may be able to read the thermometer without opening the door, minimizing heat loss.
- Taking Temperature Readings: Once the oven has preheated, take the initial temperature reading from the oven thermometer. Record this reading, as it indicates the oven's temperature at the beginning of the testing process. Then, continue to take readings every 20 minutes for the next hour and a half to two hours. Try to keep the oven door closed as much as possible to avoid heat loss, which can affect the accuracy of your readings.
- Calculating the Average Temperature: After taking multiple readings, calculate the average temperature. Add up all the temperature readings and divide the sum by the number of readings you took. Compare this average temperature to the desired set temperature of 350°F (176.67°C). A significant deviation from the set temperature indicates that your thermostat may need adjustment or calibration.
- Adjusting the Thermostat: If the average temperature is higher or lower than expected, you can adjust the thermostat accordingly. For modern ovens, this may involve pressing a series of buttons on the control panel to recalibrate the oven temperature. Older models may require manually turning a thermostat adjustment screw located near the selection dial stem. Always refer to your oven's user manual for specific instructions on recalibrating the thermostat.
- Testing Different Spots in the Oven: Ovens can have temperature variations at different rack levels. To account for this, consider repeating the testing process with the oven thermometer placed on the top and bottom racks. This will help you identify any hot or cold spots in your oven and adjust your cooking techniques accordingly.
- Regular Monitoring and Calibration: It is recommended to repeat the thermostat-checking process every few months. Additionally, if you notice a sudden change in how your food is cooking, it may be a sign that your oven's temperature needs to be recalibrated. Proper calibration ensures that your oven maintains the correct temperature throughout the cooking process, resulting in evenly cooked dishes.
Remember, checking the thermostat and calibrating your oven's temperature is an important step in maintaining the accuracy of your electric oven. By following these steps, you can ensure that your oven is functioning optimally and your recipes turn out as expected.
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Calibrate your oven
Calibrating your oven can help you get consistent results when baking or roasting. If you notice that your dishes are coming out over- or undercooked, or your oven isn't baking evenly, it might be time to calibrate.
Firstly, you will need an accurate oven thermometer. Place a rack in the centre of the oven cavity and centre your thermometer on the rack, then close the door. Set the oven temperature to 350°F and wait for the oven to preheat fully. Do not open the door during this process, as this could cause inaccurate readings.
Once the oven has preheated, check the temperature on the thermometer. If your thermometer reads a temperature 15°F above or below 350°F, your oven needs calibration. If the difference is greater than 30°F, you may need to call a technician. If you are at a high altitude, this may also be affecting your oven's temperature or baking times.
If your oven has an analogue dial knob, pull the knob off the thermostat. You will probably see a small set screw in the middle. Use a screwdriver or a pair of pliers to turn it gradually, about an eighth of a turn at a time—turn it clockwise to lower the temperature, and counterclockwise to increase it.
If your oven has a digital display, check your owner's manual for specific instructions. Typically, you will hold down one or two buttons to access a "calibration mode" and then use arrow buttons to adjust the temperature.
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Test hot and cold spots
Ovens can have different temperatures in different spots. To test for hot and cold spots, you can use two thermometers placed in different spots in the oven, then check several different temperatures. Move the thermometers and then try those same temperatures again. This will allow you to map out the hot and cold spots in your oven.
Another method is to use a sheet pan lined with parchment paper and dusted with about a cup of sugar. Bake at 400 degrees Fahrenheit for 10 minutes, then check where the sugar has melted, and where it remains unmelted or burnt. Sugar begins to melt at 367 degrees Fahrenheit, so you can use this knowledge to determine the temperature in different spots in your oven.
You can also try a similar test with a large baking sheet of white bread slices toasted 4 inches away from the broiler.
If you don't have a thermometer, you can still check your oven temperature by placing a small amount of high-temperature neutral oil in a ramekin or a cup made of foil. Preheat your oven to 375 degrees Fahrenheit and place the oil inside for 15 minutes. If the oil is not hot after this time, your oven is running too cold.
If you do have a thermometer, preheat your oven to 350 degrees Fahrenheit and place the thermometer in the centre of the middle rack. Take a reading after 20 minutes, then continue to take readings every 20 minutes for the next hour and a half to two hours. Calculate the average of these readings. The average should be around the original set temperature. If the average is not correct, you may need to adjust the dial accordingly.
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Adjust the temperature dial
If your oven uses an electronic control board and temperature sensor, you can adjust the temperature by pressing a button on the control panel. However, if your oven uses a temperature control thermostat, you will need to rotate a dial to select the desired temperature.
If your oven is not reaching the correct temperature, you can try adjusting the temperature dial. First, ensure that the internal thermostat sensor on the inside of the oven is secure and not touching the inner walls. Then, remove the plastic knob from the temperature dial by pulling it off or gently prying it off with a screwdriver. Mark the alignment flat spot on the back of the knob with a marker so that you can reference it later if needed. Next, use a screwdriver to loosen the screws holding the outer part of the dial to the inner mechanism.
Calculate the difference between the set temperature and the average temperature you calculated from your readings. If your oven is not reaching the correct temperature, hold the stem and rotate the dial counter-clockwise. For example, if you need to hit 350 degrees Fahrenheit but your oven is under by 20 degrees, set it to 370 degrees Fahrenheit and adjust as needed.
You can also adjust the oven temperature by placing a baking stone or steel inside the oven, as this will help to hold the temperature steady. Additionally, if your oven has a convection setting, you can use this to reduce temperature fluctuations by circulating the heated air evenly throughout the oven cavity.
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Frequently asked questions
You can check the temperature of your electric oven by using an oven thermometer. Preheat your oven to 350°F (176.67°C) and let it heat up for at least 20 minutes. Then, take a reading of the internal temperature and repeat this process every 20 minutes for the next hour and a half to two hours.
You should use an oven thermometer that reads air temperature. Infrared thermometers are the most accurate, but they are also the most expensive and difficult to use.
You can test the accuracy of your oven thermometer by placing a small amount of sugar in an oven-safe dish and heating your oven to 375°F (190.55°C). Check the sugar after 15 minutes – if it hasn't melted, your oven is running too cold.
If your oven is not reaching the correct temperature, you may need to recalibrate it. First, check that the internal thermostat sensor is secure and not touching the inner walls. Then, adjust the temperature dial to match the internal temperature of the oven.
If you don't have an oven thermometer, you can test if your oven is running too hot or too cold by placing a sheet of parchment paper on a half-sheet pan and covering it with sugar. Bake at 400°F (204.44°C) for 10 minutes and check the sugar – if it's melted, your oven is running hot, and if it's unmelted, your oven is running cold.
