If your oven is on fire, keep the door closed, turn the oven off, and let the fire suffocate itself. Those three steps resolve the vast majority of oven fires without any additional tools or intervention. The enclosed space of an oven starves a fire of oxygen quickly, so your main job is to resist the urge to open the door.
The Three Immediate Steps
An oven fire looks alarming, especially if you can see flames through the glass, but the oven itself is designed to contain high heat. Here’s what to do:
- Keep the door shut. Opening it feeds fresh oxygen to the fire and can cause flames to surge outward toward you. No peeking.
- Turn the oven off. For an electric oven, switch it off and unplug it if you can safely reach the outlet. For a gas oven, turn the knob to “off.” If flames are large or you smell a strong gas odor, turn off the gas at the appliance shutoff valve (typically located behind or beside the oven on the gas line).
- Wait. The fire will consume the remaining oxygen inside the oven and burn out on its own. This usually happens within minutes.
This same approach works for microwave fires. The principle is identical: a sealed box will smother a fire if you let it.
Why Opening the Door Is Dangerous
Your instinct will be to open the oven and deal with the fire directly. That instinct is wrong. Opening the door does two things: it feeds the fire a rush of oxygen, intensifying it immediately, and it gives flames a path out of the oven and into your kitchen. A fire that was contained inside a steel box is now spreading across your countertops, cabinets, or toward you. Keep the door closed and let the oven do the work of containing the fire.
When to Evacuate and Call 911
Most oven fires stay small and burn out quickly once the oven is off. But if the fire grows large enough to crack or break the oven door glass, or if flames escape from the oven, the situation has changed. Get everyone out of the house and call 911 from outside. The same applies if the fire doesn’t die down within a few minutes of turning the oven off, or if smoke becomes heavy enough that you can’t see or breathe comfortably.
Using a Fire Extinguisher
If you have a fire extinguisher and the fire has escaped the oven, you can use it, but you need the right type. Most kitchen fires involve grease or cooking oils, which are classified as Class K fires. A standard ABC extinguisher (the most common household type) will work on electrical and general fires, but a Class K extinguisher is specifically designed for cooking oil and grease. If your extinguisher doesn’t bring the fire under control in a few seconds, leave the house and call 911.
Never use water on a grease fire. Water causes burning grease to splatter and spread, which can turn a small fire into one that engulfs your kitchen in seconds.
Baking Soda as a Backup
If a small grease fire has spilled onto the stovetop or escaped the oven and you don’t have an extinguisher, baking soda can smother it. Baking soda releases carbon dioxide when heated, which displaces oxygen around the flames. You need a generous amount, so a single pinch won’t cut it. Keep a full box near your cooking area.
Salt also works in a similar way for very small fires. Flour, sugar, and baking powder do not. Flour is combustible and can cause a fireball. Never throw any powdery substance at a fire unless you’re certain it’s baking soda or salt.
Fires During a Self-Cleaning Cycle
Self-cleaning cycles heat the oven to extremely high temperatures to burn off food residue, and that process itself can ignite leftover grease or forgotten items inside. The oven door locks during self-cleaning, so you won’t be able to open it, which is actually a safety advantage. Turn the oven off, and the fire will typically burn out quickly inside the locked compartment. If the fire grows or breaks through the glass, evacuate and call 911.
To prevent self-cleaning fires, remove all pans, racks with plastic handles, and large food debris before starting the cycle. The self-cleaning feature works best when the oven is only lightly soiled.
After the Fire Is Out
Once the fire has burned out and the oven has cooled completely (give it at least an hour), you can open the door to assess the damage. Look for warped metal, damaged door seals, melted wiring, or cracked glass. Even if everything looks fine, have the oven professionally serviced before using it again. Heat damage to internal wiring or gas connections may not be visible but can create a hazard the next time you cook.
If you used a fire extinguisher inside the oven, you’ll need to clean thoroughly before cooking again. For dry chemical extinguisher residue, vacuum loose powder with a HEPA-filter vacuum, then wipe all surfaces with a damp cloth and a paste of baking soda and water. Rinse with clean water and dry completely. For wet chemical extinguisher residue, wipe up the residue with a cloth, clean with hot soapy water, then rinse and dry. Don’t cook in the oven until every trace of extinguisher residue is removed, as the chemicals are not food-safe.
Preventing Oven Fires
Most oven fires start from grease buildup or food drippings that have accumulated on the oven floor. Cleaning spills after they happen, especially fatty drippings from roasting meat, is the simplest prevention. Line the lower rack with a baking sheet beneath dishes that tend to bubble over. Avoid using aluminum foil on the oven floor, as it can trap heat and grease in ways that increase fire risk.
Keep a fire extinguisher in your kitchen, ideally a Class K or combination ABC/K model. Mount it somewhere accessible but not directly next to the oven, since a fire at the oven could block your path to it. A spot across the kitchen, near an exit, is ideal.