Choosing the right fire extinguisher depends on where it is installed and the scale of the fire risks associated with the space.

This guide hub brings together simple advice on fire extinguisher types, fire classes, legal requirements, and placement, based on UK fire safety guidance.

Key Knowledge Guides

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Which fire extinguisher do I need?

Learn how to choose the correct fire extinguisher based on fire risk, environment and space size.

What are the fire classes in the UK?

A clear explanation of Class A–F fires, what causes them, and the dangers of using the wrong one.

What is inside a fire extinguisher?

Understand the differences between water, foam, CO₂, powder and wet chemical extinguishers.
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What sizes and coverage are available?

How extinguisher size relates to room size, fire load and coverage — and why bigger isn’t always better.

Related fire extinguisher guides

Read these next for practical, step-by-step guidance: