Short answer: Gas oven smoking from the bottom can disrupt cooking and pose safety concerns. Learn causes, solutions, and prevention for a hassle-free kitchen.

The issue of a gas oven smoking from the bottom can be a source of frustration and concern for homeowners and cooking enthusiasts alike. When smoke emerges from the lower part of the oven during cooking or preheating, it not only disrupts the culinary experience but also raises questions about safety. Understanding the root causes of this problem is essential for its effective resolution. From the accumulation of food residues to potential component malfunctions, identifying the reasons behind a smoking gas oven is the first step towards ensuring a smoke-free and trouble-free kitchen. In this discussion, we will highlight the common causes of gas ovens emitting smoke from the bottom, explore practical solutions, and provide insights into how to prevent and address this issue for a seamless and enjoyable cooking experience.

Common Causes Of Gas Oven Smoking From Bottom

When a gas oven is smoking from the bottom, especially in the case of a new oven during its first time preheating, there can be several common causes for this issue. It’s essential to understand these causes to address the problem effectively.

  1. Grease and Food Residue on the Oven Floor: One common cause of smoke in a gas oven is the presence of grease and food residue on the oven floor. Over time, as you cook, grease and food particles can accumulate on the bottom surface of the oven. When the oven is preheated or used at high temperatures, these residues can burn, producing smoke.
  2. Accumulation of Burnt Food Particles: Similarly, if there is a buildup of burnt food particles within the oven, they can also generate smoke when the oven is in use. These burnt residues can adhere to the oven walls, floor, and ceiling, causing smoking issues.
  3. Food Positioning: The way you position food inside the oven can also contribute to smoking. Placing food too close to the oven’s bottom can result in drippings and debris falling onto the oven floor, which may subsequently burn and produce smoke.
  4. Igniter Problems: The oven’s igniter is responsible for lighting the gas and initiating the heating process. If the igniter is malfunctioning, it may not ignite the gas properly, leading to incomplete combustion and the release of unburned gas and smoke.
  5. Gas Valve Issues: Issues with the gas valve can affect the gas flow within the oven. If the gas valve doesn’t regulate the gas supply correctly, it can lead to an improper air-to-fuel mixture, causing smoking during operation.
  6. Defective Burners: The oven’s burners are responsible for distributing heat evenly. If one or more burners are defective or clogged, it can lead to uneven heating and potential smoking as certain areas of the oven become excessively hot.
  7. High Gas Pressure: In some cases, an excessively high gas pressure supply can cause a gas oven to smoke. When there’s too much gas flowing into the oven, it can lead to incomplete combustion and the production of smoke.

How To Fix The Gas Oven Smoking From The Bottom?

Fixing a gas oven that is smoking from the bottom requires a systematic approach to identify and address the underlying issues. Here are the steps to fix the problem, along with additional related solutions:

Step 1: Turn Off the Gas Supply: Before performing any maintenance, turn off the gas supply to the oven to ensure there is no risk of gas leakage.

Step 2: Cleaning the Gas Oven:

Removing residue from gas oven
Deep-cleaning gas oven
  • Remove oven racks, trays, and any other removable components.
  • Use a non-abrasive oven cleaner or a mixture of baking soda and water to clean the oven’s interior thoroughly.
  • Pay close attention to the oven floor, walls, and ceiling, as well as any visible food residues or grease buildup.
  • Wipe down the oven’s interior with a damp cloth or sponge to remove cleaning residue.

Step 3: Check the Gas Burners

  • Inspect the gas burners for any clogs, debris, or signs of damage.
  • Use a soft brush or compressed air to clean the burners, ensuring that they are free from obstructions.
  • If the burners are damaged or heavily corroded, consider replacing them.

Step 4: Check the Oven Igniter and Replace it

  • Locate the oven igniter, which is typically located at the rear or near the broiler element.
  • Test the igniter for functionality by turning on the oven and observing whether it glows bright orange. If it doesn’t, it may need replacement.
  • Replace the igniter with a compatible one if it fails to ignite the gas properly.

Replace the Faulty Heating Element

Materials and Tools You’ll Need:

  • Replacement heating element (ensure it matches the specifications of your oven)
  • Screwdriver (typically Phillips or flat-head)
  • Pliers
  • Work gloves
  • Safety goggles
  • Owner’s manual for your oven

Remove Oven Racks: Take out any oven racks or trays to access the heating element.

Locate the Heating Element: The heating element is typically found at the bottom of the oven, beneath the oven floor. It may be covered by a panel or metal shield that needs to be removed.

Locating the dryer heating element
Locating dryer heating element

Disconnect the Old Heating Element: Use a screwdriver to remove any screws securing the old heating element to the oven. Keep these screws as you may need them for the new element. Carefully pull the heating element out, exposing the wires connected to it. Use pliers to disconnect the wires from the old heating element. Note the placement of wires to ensure correct connections when installing the new element.

Install the New Heating Element: Connect the wires to the new heating element in the same configuration as the old one. Make sure the connections are secure. Carefully slide the new heating element back into place in the oven.

Secure the New Heating Element: If the old heating element had screws securing it, use these screws to secure the new one in place. If not, consult the replacement element’s instructions for any specific attachment guidelines.

Reassemble the Oven: Replace any panels or metal shields that cover the heating element. Put the oven racks or trays back in their positions.

Power Up the Oven: Reconnect the gas supply to the oven and turn it back on. Plug the oven back into the electrical outlet or turn the circuit breaker back on.

Test the Oven: Set the oven to a low temperature and observe the new heating element to ensure it’s functioning correctly. It should start to glow when it’s heating up.

Final Checks: Check for any gas leaks around the oven connections. If you suspect a gas leak, turn off the gas supply immediately and consult a professional technician.

What To Do When New Oven Smoke?

When you use a new oven for the first time, it tends to produce a lot of smoke and a strong smell. This happens because there are some initial manufacturing residues or materials inside that need to burn off. To minimize the amount of smoke generated during the initial use of a new gas oven, follow this step-by-step method:

Step 1: Preheat the Oven: Start by preheating the oven to 200 degrees Celsius (392 degrees Fahrenheit).

Step 2: Bake for 15 Minutes: Allow the oven to bake at 200°C for 15 minutes. This initial temperature helps kickstart the process of burning off any manufacturing residues or materials inside the oven.

Step 3: Increase Temperature to 250°C: After the first 15 minutes, increase the oven temperature to 250 degrees Celsius (482 degrees Fahrenheit).

Step 4: Bake for Another 15 Minutes: Let the oven bake at 250°C for an additional 15 minutes. This step gradually raises the temperature to continue burning off residues.

Step 5: Increase Temperature to 300°C: Once again, increase the oven temperature, this time to 300 degrees Celsius (572 degrees Fahrenheit).

Step 6: Bake for Another 15 Minutes: Allow the oven to bake at 300°C for another 15 minutes.

Step 7: Continue Gradually Increasing Temperature:

  • Repeat the process of increasing the temperature by 50 degrees Celsius (122 degrees Fahrenheit) every 15 minutes until you reach a maximum temperature of 400 degrees Celsius (752 degrees Fahrenheit).
  • For example, after 15 minutes at 300°C, increase it to 350°C, then to 400°C in subsequent intervals.

Step 8: Complete the Gradual Heating Process: Continue this gradual heating process until you’ve reached the maximum temperature. This incremental increase in temperature allows the oven to burn off residues evenly.

Step 9: Observe and Monitor:

  • While following this process, keep an eye on the oven. You may notice some smoke and odors during the initial stages, which is normal as manufacturing residues are being burnt off.
  • Ensure proper ventilation in the kitchen to dissipate any smoke.

Step 10: Repeat as Needed: Depending on the severity of residues and the oven’s condition, you may need to repeat this gradual heating process during the first usage to ensure that most residues are eliminated.

Fixing heating element
Checking heating element with multimeter


  • Ensure proper food positioning in the oven to prevent drippings and debris from accumulating on the oven floor.
  • Regularly clean and maintain your gas oven by wiping up spills and food residues after each use.
  • Use a gas oven thermometer to verify and calibrate the oven’s temperature settings to prevent overheating and smoking.
  • Install an oven hood or ventilation system to help remove excess heat and smoke from the kitchen while cooking.
  • If you’re uncertain about any of the steps or if the smoking issue persists, it’s advisable to consult a professional appliance technician to diagnose and repair the problem safely.


Can a Smoky Oven Catch Fire?

A smoky oven can potentially catch fire if there are excessive food residues, grease, or flammable materials inside the oven. When these substances accumulate and are exposed to high temperatures, they can ignite, leading to a fire hazard. It’s crucial to address any smoking issues promptly, clean the oven regularly, and follow safety precautions to minimize the risk of a fire.

Why Is My Top Oven Smoking?

If the top oven of your double oven unit is smoking, it could be due to similar reasons as the bottom oven. Common causes include the presence of food residues, grease buildup, or a malfunctioning heating element. Check and clean the top oven in the same manner as the bottom oven, addressing any specific issues identified.

Why Is My Oven Smoking After Cleaning It with Bleach?

Using bleach to clean an oven can produce smoke and fumes when the bleach reacts with food residues or organic materials that may be present inside the oven. This reaction can release harmful gases and create a smoky environment. It’s generally not recommended to clean ovens with bleach due to the potential health hazards and the risk of damaging oven components. Instead, use oven-specific cleaning products or natural alternatives like baking soda and vinegar.

Is It Normal for a New Oven to Smoke?

Yes, it’s normal for a new oven to produce some smoke during its initial use. This occurs as the oven burns off manufacturing residues, protective coatings, and any materials left over from the production process. To minimize this smoke, follow the gradual heating process described earlier when using a new oven for the first time. After a few uses, the smoking should diminish as these residues burn off completely.

Why Does My Oven Smoke When Broiling?

When your oven smokes during the broiling process, it’s often due to the high temperatures used for broiling, causing food drippings and grease to splatter and burn on the broiler element or oven walls. To minimize smoking while broiling, use a broiler pan or tray to catch drippings, keep the oven clean, and ensure proper ventilation in your kitchen.

How Do I Prevent My Oven from Smoking During Self-Cleaning Cycles?

Ovens sometimes smoke during self-cleaning cycles, especially if there are food residues or grease deposits. To prevent this, it’s essential to clean your oven regularly to remove any loose debris. Additionally, run shorter self-clean cycles and avoid using excessive cleaning agents. Proper ventilation in the kitchen can also help disperse any smoke that may occur during self-cleaning.

What Should I Do If My Oven Continues to Smoke After Cleaning?

If your oven continues to smoke after cleaning, check for any hidden or hard-to-reach residues that might not have been completely removed. Ensure that all components, such as heating elements, are in good working condition. If the problem persists, consult a professional technician to inspect and diagnose the issue, as there may be underlying problems that require attention.


Addressing the issue of a gas oven smoking from the bottom is essential for both safety and culinary satisfaction. Whether it’s due to food residues, malfunctioning components, or other factors, understanding the common causes and following appropriate solutions can ensure a smoke-free cooking experience. Regular maintenance, proper cleaning, and safe usage practices are key to enjoying the convenience and efficiency of a gas oven while minimizing the risk of smoke-related concerns. By taking these steps, you can maintain a well-functioning and safe kitchen appliance, ensuring that it serves you reliably for years to come.

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