What Can Cause an Oven Not to Heat?

Young,repairman,in,overall,repairing,oven,in,kitchenAn oven that fails to heat up can be a frustrating and inconvenient problem to deal with, especially when you’re in the middle of cooking a meal or baking your favorite dish. Several factors can contribute to an oven not heating properly. In this blog, we will discuss some common causes of this issue and how to troubleshoot and fix them.

1. Igniter Problems:

One common cause of an oven not heating is a faulty igniter. The igniter is responsible for lighting the gas or heating element inside the oven, allowing it to reach the desired temperature. Over time, igniters can become weak or fail altogether, resulting in the oven’s inability to heat up. To determine if the igniter is the problem, observe it when you turn on the oven. If the igniter glows but does not ignite the gas or heat element, it is likely faulty and needs to be replaced. Consult your oven’s manual or contact a professional technician to replace the faulty igniter safely.

2. Oven Thermostat Issues:

Another common culprit for an oven not heating properly is a malfunctioning thermostat. The thermostat regulates the oven’s temperature based on the settings you choose. If the thermostat is inaccurate or defective, it may prevent the oven from heating up to the desired temperature or not heat at all. To test the thermostat, you can use an oven thermometer. Place the thermometer inside the oven and set it to a specific temperature. If the temperature displayed on the thermometer is significantly different from what you set, the thermostat may need to be recalibrated or replaced. Consult your oven’s manual for instructions on how to recalibrate the thermostat or contact a professional for assistance.

3. Heating Element Failure:

In electric ovens, the heating element is responsible for generating heat. Over time, these elements can wear out or become damaged, resulting in an oven that fails to heat properly. If one heating element isn’t working, you may notice that only one side of the oven is heating up while the other side remains cold. To determine if the heating element is the issue, visually inspect it for any signs of damage or deterioration. If you notice any visible wear or damage, the heating element will need to be replaced. Contact a professional technician for assistance with replacing the heating element, as this can be a complex job.

4. Gas Supply Issues:

For gas ovens, ensure that there is an adequate supply of gas reaching the oven. If you’re using propane, make sure the tank is not empty or turned off. If your oven is connected to a natural gas line, check if other gas appliances in your home are working correctly to determine if there is a problem with the gas supply. If the gas supply is confirmed to be functioning correctly, but the oven still doesn’t heat up, it is advisable to contact a professional technician to diagnose and repair the issue.

5. Broken Thermal Fuse:

A thermal fuse is a safety device in the oven that shuts off power to the heating elements if they become too hot. If the thermal fuse becomes blown or broken, it can prevent the oven from heating up. You can visually inspect the thermal fuse for any signs of damage or use a multimeter to test its continuity. If the thermal fuse is faulty, it will need to be replaced. It is essential to note that a blown thermal fuse can be an indication of an underlying issue, such as a malfunctioning heating element or a ventilation problem. Therefore, it is advisable to consult a professional technician to diagnose the cause of the thermal fuse failure and address it accordingly.


When your oven fails to heat up, it can be a frustrating experience. By understanding some common causes of this issue and how to troubleshoot them, you can address the problem effectively. However, if you are unsure or uncomfortable handling these issues yourself, it is always best to seek the assistance of a professional technician. They have the experience and knowledge to diagnose and fix the problem in a safe and efficient manner, ensuring that your oven returns to working order and you can resume cooking delicious meals.

Need Appliance Repair in Prescott, AZ?

Established in 2010, Affordable Appliance Repair is your customer service superhero, providing work to Prescott Valley and the surrounding areas. We repair all major appliances, including ovens and ranges, washers and dryers, microwaves, and a variety of refrigerators, including top- and bottom-freezers, French door, side-by-side, built-in, stand-alone, and cabinet-depth models. We offer free estimates, no hidden charges, and same-day emergency service. All parts come with a 90-day warranty directly from the manufacturer. Contact us today to learn more about what we can do for you!
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