6 Reasons Your Oven is Not Heating Up and How to Fix It

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Gina Napsin
June 23, 2024
Home appliances
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Is your oven failing to heat up as it should? It can be frustrating when your culinary plans are thwarted by a malfunctioning appliance. Fortunately, in this blog, we'll delve into the six common reasons why your oven might not be heating up properly and guide you on how to rectify these issues.
Whether you're a novice in the kitchen or a seasoned chef, understanding the root causes of oven problems is crucial. And if these DIY solutions don't cut it, don't worry – professional oven repair services are just a call away!

Faulty Igniter

A malfunctioning igniter can be one of the culprits behind your oven's heating woes. This critical component is responsible for igniting the gas or heating element. Over a period of time, wear and tear, or damage can hinder its ability to create the necessary spark for heating. If your oven's igniter is faulty, it won't generate heat as needed, affecting your cooking.
To fix it, follow these steps:
  • Safety First: Always ensure the oven is unplugged or the gas supply is turned off before attempting any repairs.
  • Access the Igniter: Locate the igniter, which is usually near the oven's burner or at the back. It's a small, rectangular device connected to wires.
  • Disconnect and Remove: Gently disconnect the wires attached to the old igniter. You may need to remove a few screws to take it out.
  • Replace with a New Igniter: Install the new igniter by connecting the wires exactly as they were on the old one. Secure it in place with screws.
  • Reassemble: Put everything back in its place, turn the power or gas supply back on, and test the oven to ensure it's heating correctly.
  • Professional help: If the issue continues, call an expert to diagnose and fix it.

Temperature Sensor Problems

Temperature sensor issues can disrupt your oven's heating accuracy. This sensor is designed to monitor and maintain the oven's internal temperature. When it malfunctions, it can result in inaccurate temperature readings, causing your oven to run too hot or too cold. This can impact your cooking, especially when precise temperatures are crucial.
Here's how to address this problem:
  • Safety Precautions: As always, start by turning off the oven's power.
  • Locate the Sensor: Find the temperature sensor, usually a slender probe extending into the oven cavity. It's connected to wires.
  • Detach the Sensor: Carefully remove the wires from the sensor, which may involve loosening a few screws.
  • Calibration or Replacement: Depending on the problem, you may need to recalibrate the sensor as per your oven's manual. If it's malfunctioning beyond calibration, replace the sensor with a new one. Connect the wires as before.
  • Test the Oven: Turn the power back on and check if the oven heats up correctly now. Calibrating or replacing the sensor should restore accurate temperature control.
  • Expert help: If the temperature sensor problem persists, contact us to diagnose and fix the issues promptly

Baking Element Issues

In electric ovens, baking elements play a vital role in heating. When these elements become damaged or faulty, they can lead to uneven heating or complete heating failure. Baking element problems can hamper your cooking by preventing the oven from reaching the desired temperature and even cooking distribution.
Follow these steps to resolve baking element issues:
  • Safety Check: Ensure the oven is disconnected from the power supply.
  • Locate the Element: The baking elements are usually at the top and bottom of the oven. You may need to remove a cover or panel to access them.
  • Remove the Faulty Element: Carefully disconnect the wires attached to the damaged element and take it out.
  • Install a New Element: Replace the old element with a new one, connecting the wires securely.
  • Reassemble and Test: Put back any covers or panels, restore power to the oven, and test it to confirm that the baking element is functioning correctly.

Gas Supply Problems

Gas ovens rely on a continuous and properly regulated gas supply to function efficiently. Any interruption or blockage in the gas supply line can cause your oven not to heat up. It can occur due to a closed gas valve, gas leaks, or blockages in the gas line. Addressing gas supply problems is crucial to ensure your oven has the fuel it needs to produce heat.
Here's how to address gas supply problems:
  • Safety First: Prioritize safety by turning off the gas supply to your oven and ensuring the area is well-ventilated.
  • Check the Gas Valve: Verify that the gas valve leading to your oven is fully open. Sometimes, it might have been accidentally closed.
  • Inspect for Leaks: Carefully examine the gas line and connections for any signs of leaks, such as a hissing sound or the smell of gas. If you suspect a gas leak, immediately shut off the gas supply and contact a professional technician.
  • Ventilation: Ensure the area around your oven is properly ventilated to prevent gas buildup.
  • Professional Help: If you're uncertain about handling gas-related issues, it's advisable to contact a licensed technician who can safely address gas supply problems.

Malfunctioning Thermostat

A malfunctioning thermostat can disrupt your oven's ability to regulate its temperature accurately. This vital component may develop issues over time, such as calibration problems or electrical faults. As a result, your oven may run too hot or too cold, affecting your cooking results. A malfunctioning thermostat can lead to inconsistent and unreliable heating.
Here's how to tackle this issue:
  • Safety Measures: Start by disconnecting the oven from the power source to ensure your safety.
  • Access the Thermostat: Locate the thermostat, which is typically situated behind the oven's control panel. It may require removing some screws or panels.
  • Replacement or Calibration: Depending on the severity of the problem, you can either recalibrate the thermostat following your oven's manual instructions or replace it with a new one if it's beyond repair. Ensure the wires are connected correctly.
  • Reassemble and Test: After making the necessary adjustments, reassemble the oven, restore power, and test it to confirm that the thermostat is functioning accurately. Adjust the settings as needed to reach and maintain the desired temperature.
  • Professional Assistant: If problems persist even after the repair, be sure to reach out to a certified technician near you.

Wiring and Electrical Issues

Wiring and electrical problems within your oven's circuitry can impede the flow of electricity needed for heating. Damaged or frayed wires, loose connections, or electrical faults can all disrupt the oven's heating function. These issues can arise from wear and tear or electrical failures, and they can prevent your oven from heating up properly, affecting its overall performance.
Here's how to deal with wiring and electrical issues:
  • Safety First: Always unplug the oven or turn off its power source to prevent electrical shocks.
  • Inspect Wiring: Carefully examine the wiring for any visible damage, such as fraying, exposed wires, or loose connections.
  • Repair or Replace Damaged Wiring: If you find damaged wiring, replace it with the appropriate electrical wiring, ensuring that connections are secure. Seek professional assistance if you're unsure about handling electrical repair services.
  • Test the Oven: Once the wiring is repaired or replaced, plug the oven back in or restore its power supply. Check the oven to ensure it heats up properly without any electrical issues.

Our Professionals Can Fix Your Oven So It Works Like New

Having a functional and reliable oven is essential to maintain the smooth operation of your household. So, when your oven stops heating up or doesn’t work at all, you need a quick repair. The professionals at Home Alliance can service your appliance to meet all of your cooking and baking needs.


  • How frequently should I clean my oven for optimal performance?
Regular cleaning, ideally every three to six months, is recommended to prevent issues and maintain efficient operation.
  • Can a faulty thermostat be repaired, or is replacement the only solution?
In most cases, a faulty thermostat requires replacement for accurate temperature control.
  • Are gas ovens more prone to heating issues than electric ones?
Both types of ovens can experience heating issues, but the causes and troubleshooting methods may vary.
  • What can I do if my oven's heating elements are visibly damaged?
Replace the damaged heating elements promptly to ensure consistent heating and prevent further issues.
Is it normal for my oven to take some time to heat up, or should it be instantaneous?
A brief preheating time is normal; however, significantly prolonged heating times may indicate an issue that needs attention.