Kitchen Fires: How to Put One Out Correctly (Not with Water)

TL;DR: Never pour water on a grease fire. It flash-boils and throws burning oil in every direction. Smother it with a metal lid, dump baking soda on small flames, or use a Class K or Class B fire extinguisher. If the fire is bigger than a dinner plate or the flames reach the hood, get everyone out and call 911.

_Last reviewed: July 2026 · 6 min read_

You're standing over a pan and the oil suddenly catches. Your hand goes to the sink faucet on instinct, and that instinct is the thing that turns a stovetop fire into a house fire. Here's what to grab instead, and why the wrong reaction is more dangerous than the fire itself.

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What causes most kitchen fires?

Cooking equipment causes roughly 49% of all reported home fires in the US, according to the National Fire Protection Association, and unattended cooking is the leading factor in nearly two-thirds of those. Grease and oil left on high heat for even 3-4 minutes without stirring can hit their flash point and ignite on their own, no spark needed.

The second-biggest cause is electrical: a frayed cord on a toaster, a loose connection behind the oven, or an overloaded outlet running a microwave and a coffee maker at once. If your kitchen still runs on an older panel, an outdated 2-prong outlet or a circuit that trips under normal load is a warning sign worth fixing before it becomes a fire call. Homes with a panel rated under 100 amps run hotter under modern kitchen loads than a 200-amp service built for today's appliances.

How do you put out a grease fire correctly?

You smother it, you never douse it with water. Water is denser than oil, so it sinks below the burning grease, instantly turns to steam, and explodes the fire upward and outward in a fireball that can reach the ceiling.

The correct steps, in order:

1. Turn off the burner if you can reach the knob safely.
2. Slide a metal lid or cookie sheet over the pan and leave it there for several minutes. Glass lids can crack from the heat, so metal is safer.
3. If there's no lid within reach, pour baking soda over the flames. It takes a full box for anything beyond a small flare-up, so this only works on small fires.
4. Never use flour, which is combustible and can make things worse, and never use a wet towel, which can carry the fire onto the towel and your hands.

If the fire grows past the size of the pan or you're not confident it's out, leave the kitchen, close the door behind you to starve it of oxygen, and call 911 from outside.

What extinguisher should you keep in a kitchen, and how do you use it?

A Class K extinguisher is built specifically for kitchen grease and cooking oil fires and is the standard in commercial kitchens; a Class B or a multi-purpose ABC extinguisher works for home use and also covers electrical and general combustible fires. Keep it mounted near the exit of the kitchen, not next to the stove, so you're not reaching over flames to grab it.

| Extinguisher Type | Best For | Where to Mount | |---|---|---| | Class K | Grease, cooking oil fires | Home or commercial kitchen, near exit | | ABC (multi-purpose) | Grease, electrical, paper/wood | Kitchen, garage, utility room | | Class B only | Flammable liquids | Garage, workshop |

To use one, remember PASS: Pull the pin, Aim low at the base of the fire, Squeeze the handle, Sweep side to side. A standard 5-pound extinguisher discharges in about 8-10 seconds, so you get one shot to aim correctly. Check the pressure gauge monthly and replace or recharge it if the needle drops out of the green zone, the same way you'd check an oven's igniter or heating element before assuming it's broken rather than dangerous.

What's different about oven, microwave, or electrical fires?

Each type needs a different response, and using the wrong one can make things worse. For an oven fire, keep the door closed and turn off the heat. Opening the door feeds the flames fresh oxygen. For a microwave fire, unplug it if you can do so safely, keep the door shut, and let the fire burn out inside the sealed box rather than opening it to check.

For an electrical fire, from a cord, outlet, or small appliance, never use water, since it conducts electricity back to you. Cut power at the breaker if you can reach it safely, then use a Class C or ABC extinguisher. Homes where kitchen appliances run on aging wiring or where multiple high-draw devices share a single circuit see electrical fires more often; if your kitchen trips breakers regularly, it's worth having an electrician check the load before it's an emergency, and it's also worth auditing which appliances are quietly running up your electric bill, since overworked older units run hotter and fail more often.

What should you do after the fire is out?

Ventilate the room immediately by opening windows and turning on the exhaust fan, since grease fire smoke leaves a heavy residue on cabinets, walls, and anything porous nearby. Don't turn the stove back on until it's been inspected. If flames reached the cabinets, hood, or wiring behind the stove, even briefly, have an electrician or fire-damage contractor check before you use that outlet or appliance again. Damage from heat can weaken wiring insulation in ways you won't see from the outside.

Photograph the damage before cleanup for insurance purposes, and replace any extinguisher you used, even partially, since a discharged unit loses pressure and won't work fully a second time.

FAQ

Can you use a fire blanket instead of an extinguisher for a kitchen fire?

Yes, a fire blanket works well on small stovetop fires and clothing fires, and many kitchens keep one mounted near the stove precisely because it's faster to grab than pulling a pin on an extinguisher. It works the same way a metal lid does: it cuts off oxygen without spraying anything.

How long does it take a grease fire to spread out of control?

A grease fire can double in size within 30 to 60 seconds if left unattended, which is why walking away from the stove while oil is heating is the single biggest risk factor in kitchen fires.

Is it safe to use a fire extinguisher on a fire that's already touched the ceiling or cabinets?

No. Once a fire has spread beyond the pan to cabinets, curtains, or the hood, it's grown past what a home extinguisher can reliably handle. Get everyone out, close the door, and call 911.

Do baking soda and salt work the same way on a grease fire?

Salt works similarly to baking soda by smothering small flames, but baking powder does not work the same way and can actually make a fire worse because of its chemical additives, so stick with plain baking soda or salt.

How often should a kitchen fire extinguisher be checked?

Check the pressure gauge once a month and have it professionally serviced or replaced every 6 years for a rechargeable unit, or sooner if the gauge needle isn't in the green zone.

This is educational information, not fire-safety or legal advice. Call your local fire department's non-emergency line for a home safety inspection, and call a licensed electrician if you suspect wiring played a role in a fire.