If your oven catches fire, turn off the heat and keep the oven door closed. Those two actions alone will put out most oven fires by cutting off the heat source and starving the flames of oxygen. Do not open the door to check on the fire, even if you see smoke. Opening it feeds fresh air to the flames and can cause the fire to surge outward.
Cooking is the leading cause of home fires, responsible for nearly 49% of all residential building fires in 2023. Knowing the right response before a fire starts is the difference between a minor scare and a serious emergency.
The First 30 Seconds Matter Most
The moment you see flames or heavy smoke inside your oven, follow this sequence:
- Turn off the oven. This removes the heat source. If the fire started from a heating element malfunction, this may be enough on its own.
- Leave the door closed. An enclosed oven is essentially a sealed box. Fire needs oxygen to survive, and the limited air inside the oven will be consumed quickly. Most small oven fires burn themselves out within a few minutes this way.
- Stay nearby and watch. If the fire doesn’t die down after a few minutes, or if you see flames escaping from the door seal or vents, get everyone out of the house and call 911.
If the fire is on the stovetop rather than inside the oven, slide a metal lid or a baking sheet over the burning pan to smother it. Never try to carry a flaming pan to the sink or outside.
What Never to Put on a Grease Fire
Most oven fires involve grease, fat, or oil that has dripped onto the oven floor or ignited on a broiler element. The worst thing you can do with a grease fire is throw water on it. When water hits burning oil, it instantly turns to steam and expands to 1,600 times its liquid volume. That explosive expansion launches burning oil in every direction, spreading the fire across your kitchen in less than a second.
Flour is equally dangerous. People sometimes reach for it because it looks like baking soda, but flour is combustible. Tossing it onto flames can cause a fireball. Baking soda and salt are safe alternatives for very small grease fires on the stovetop, though for a fire inside the oven, keeping the door shut remains the better strategy. Some people keep an open box of baking soda near the stove specifically for small flare-ups on burners.
Choosing the Right Fire Extinguisher
If the fire has spread beyond the oven or you can’t contain it by keeping the door shut, a fire extinguisher is your next line of defense. But not all extinguishers work on kitchen fires, and using the wrong type can make things worse.
A standard water-based extinguisher (Class A) will spread a grease fire the same way pouring water would. Even a CO2 extinguisher, which seems like it should work by displacing oxygen, is unreliable on cooking oil fires. The CO2 cools the surface layer of grease, but the oil underneath retains enough heat to reignite once the gas dissipates. The force of the CO2 discharge can also splash burning oil out of its container.
For cooking oil and grease fires, Class K extinguishers are specifically designed. They spray a wet chemical at low pressure that reacts with the oil to form a soapy layer on top of the fuel. This blanket smothers the fire without disturbing the burning liquid underneath. For general home use, an ABC-rated extinguisher handles most fire types (ordinary materials, flammable liquids, and electrical fires), though it’s less effective on deep grease fires than a Class K. Keeping both an ABC extinguisher and a small Class K in your kitchen covers virtually any scenario.
Fires During the Self-Cleaning Cycle
Self-cleaning ovens reach temperatures around 800 to 900°F to incinerate food residue. If there’s significant grease buildup inside the oven, those extreme temperatures can ignite it. Fuses can also blow and control panels can overheat during the cycle, creating additional fire risk.
If a fire starts during self-cleaning, do not open the oven door. The oven is designed to stay locked during this cycle, and opening it would expose a superheated fire to a rush of oxygen. The safest response is to turn off the oven if possible, then get everyone out and call 911. The high temperatures involved make self-cleaning fires more dangerous than typical cooking fires. The process also produces fumes and carbon monoxide, so ventilate the kitchen well whenever you run a self-cleaning cycle, and wipe out heavy grease deposits by hand before starting one.
After the Fire Is Out
Once the fire is extinguished and the oven has cooled completely, you’ll need to assess the damage before using the oven again. If the fire was small and self-extinguished, you may only be dealing with soot and charred food residue. Wipe the interior with warm soapy water and inspect the heating elements for visible damage like warping, cracking, or discoloration. If anything looks off, have the oven serviced before turning it back on.
If you used a fire extinguisher, the cleanup depends on the type. For dry chemical extinguisher residue, vacuum it up using a vacuum with a HEPA filter first, then wipe surfaces with a damp cloth and a paste of baking soda and water. Rinse thoroughly and dry. For wet chemical residue from a Class K extinguisher, wipe it away with a cloth, then clean with hot soapy water and rinse. Don’t skip the rinse step, as leftover chemical residue can produce unpleasant fumes or odors the next time the oven heats up.
Preventing Oven Fires
Most oven fires start from grease and food buildup that accumulates over time. Placing a baking sheet or foil-safe drip pan on the rack below whatever you’re cooking catches drips before they hit the oven floor. Cleaning spills promptly, especially after roasting fatty meats, removes fuel before it gets a chance to ignite during the next use.
Broiling is the highest-risk cooking method for oven fires because the heating element is directly above the food. Keep a close watch whenever you broil, and position food at least three inches from the element. If you’re broiling fatty foods like bacon or skin-on chicken, stay in the kitchen the entire time. Most oven fires happen when people walk away.