---
title: "Grease Fire on a Cooktop: the Thirty Seconds That Decide It"
description: "Grease fire on stove what to do: the four actions in order, why water makes it worse, and what a running extractor does to a pan fire in a Miami"
url: "https://fisherpaykelmiami.support/blog/grease-fire-on-a-cooktop/"
date_modified: "2026-08-26"
Category: "Safety & Risks"
---


# Grease Fire on a Cooktop: the Thirty Seconds That Decide It

## Grease fire on stove what to do, in order

If this is happening now, four actions and nothing else:

- **Slide a metal lid or a baking sheet over the pan.** Slide it across rather than dropping it in — dropping pushes burning oil over the edge.- **Turn the heat off.** The control, or the burner knob. Do not reach across the flames to do it.- **Do not move the pan.** Not to the sink, not to the door, not outside. A contained fire in a pan becomes an uncontained one the moment it is carried.- **Leave the lid on** until the pan is completely cold.

If it is not out within about thirty seconds, or it has reached the extractor, the cabinets or anything else, **get everyone out and call the fire department**. A kitchen is replaceable.

## Never water

This is the one thing worth understanding rather than just remembering, because understanding it stops the instinct.

Burning cooking oil is at several hundred degrees — far above the boiling point of water. Water poured onto it does not cool it; it **flashes to steam instantly**, expanding hundreds of times, and it does that *underneath* the oil. The result is burning oil thrown upward and outward as a cloud of fire.

That is the fireball in every video of this, and it is created by somebody trying to help.

The same applies to a wet cloth, which is not the same thing as a damp one and behaves like water.

## Turn the ventilation off, not on

The instinct is smoke, therefore extractor. It is the wrong instinct.

An extractor feeds a fire with moving air, and it pulls flames and burning grease **into a duct or a filter that already has years of grease in it**. That is how a pan fire becomes a fire inside the ventilation.

On a downdraft this is worse rather than better, because the airflow crosses the cooking surface by design — a downdraft pulling hard over a burning pan is drawing the fire sideways rather than up.

Off. Both of them.

## How long is long enough

Longer than it feels like. A heavy pan of oil holds enough heat to reignite the moment air reaches it again, and a great many second fires start because somebody lifted the lid after two minutes to check.

**Twenty minutes, minimum, and only when the pan is cold to the touch on the outside.** Leave the kitchen ventilated by opening a window if that is safe — but leave the pan alone.

## The prevention that actually works

- **Do not leave a pan of oil unattended.** It is the whole of the advice and it is the whole of the cause in most cases.- **Know where the lid is** before you start frying. A lid you have to look for is a lid you will not find.- **Keep the hood filters clean.** A metal mesh grease filter is dishwasher-safe and lasts the life of the appliance; a saturated one is fuel sitting directly above the flame.- **Watch the oil rather than the clock.** Oil that has begun to shimmer and smoke steadily is close to its ignition point, and the smoke is the warning.

:::

## Afterwards, before you cook again

A grease fire puts extreme, uneven heat into a surface designed for even heat. On a glass cooktop that is exactly how a crack starts, and a cracked cooking surface is a safety matter rather than a cosmetic one. Burnt residue also gets into burner ports and around ignition electrodes, which is why a range that survived a fire often will not light properly afterwards.

It is worth having somebody look before the next dinner rather than after it.

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