Fire Extinguisher Color Codes Explained

Ever looked at a fire extinguisher colour code and wondered what it meant and when to use which? It can be confusing!. 

Fire extinguishers are designed to tackle different types of fires with specific methods. In this post, we have made you a simple guide:

JUMP TO:

1. Key types of fire extinguishers
2. How each one works
3. why color coding is so important.

What Are the Fire Extinguisher Colours?

Back then–fire extinguishers used to come in different colors–but today, all extinguishers are primarily red with a color-coded label or band that helps you identify their type at a glance:. Here’s a quick rundown:

• Red Label -Water Extinguishers
• Cream Label -Foam Extinguishers
• Blue Label -Dry Powder Extinguishers
• Black Label -Carbon Dioxide Extinguishers
• Yellow Label -Wet Chemical Extinguishers

These colors make it QUICK and EASY to choose the right extinguisher for the situation– especially in high-stress moments.

How Does Each Work?

How Does a Dry Powder Extinguisher Work?

Dry Powder Extinguishers release a fine powder that suffocates the fire by cutting off its oxygen supply and stopping the chemical reaction. 

They’re versatile and can be used on:

• Class A Fires -ordinary combustibles like wood and paper
• Class B Fires -flammable liquids like gasoline
• Class C Fires -flammable gases

They’re also somewhat effective on Class D Fires (metal fires), but this requires special training.

Who Might Need Dry Powder Extinguishers?

Dry powder extinguishers are ideal for places with:

• Variety of fire risks- like garages, workshops, and industrial areas. 
• Their versatility makes them a popular choice for businesses dealing with flammable liquids, gases, or mixed materials.

But, if you have encountered a fire emergency—do you know how to use one? If not, figure it out now!

How Does a Carbon Dioxide (CO₂) Extinguisher Work?

• CO₂ Extinguishers work by releasing carbon dioxide gas- which displaces oxygen around the fire and cools it down. 
• Since they don’t leave any residue– they’re safe for electrical equipment.

• Best for: Class B Fires (flammable liquids) and electrical fires.

Who Might Need CO₂ Extinguishers?

Offices, server rooms, areas with a lot of electrical equipment (as they won’t damage electronics) and places with potential flammable liquid fires.

How Does a Foam Extinguisher Work?

• Foam Extinguishers release a foam that blankets the fire– cutting off its oxygen supply and preventing re-ignition. 
• The foam also cools the burning material– making it doubly effective.

• Best for: Class A Fires (ordinary combustibles) and Class B Fires (flammable liquids).

Who Might Need a Foam Extinguisher?

Warehouses, gas stations, places that store flammable liquids and general office or home use where mixed materials are present.

How Does a Water Extinguisher Work?

• Water extinguishers spray a jet of water to cool the flames, bringing the fire’s temperature down below its ignition point– this prevents the fire from spreading.

• Best for: Class A Fires (ordinary combustibles like wood, paper, and cloth).

Who Might Need Water Extinguishers?

Good choice for schools, offices, and homes, especially in spaces with a lot of wood, paper, or fabric. 

ALERT* they should never be used on electrical or oil fires–as water can make those situations worse.

How Does a Wet Chemical Extinguisher Work?

• Wet Chemical Extinguishers release a fine mist of chemicals that react with cooking oils or fats to create a thick, soapy layer, which cools the fire and prevents re-ignition.

• Best for: Class K Fires (cooking oils and fats).

Who Might Need a Wet Chemical Extinguisher?

• Must-have in commercial kitchens, restaurants, and anywhere with deep-fryers or heavy cooking equipment. 
• Designed specifically to tackle kitchen fires safely and effectively.

Why Is Extinguisher Colour Coding Necessary?

Imagine you’re facing a fire, and every second counts. Colour coding makes it easy to grab the right extinguisher without second-guessing. Each type of fire requires a specific approach– and using the wrong extinguisher can actually make things worse. 

For instance– using a water extinguisher on an electrical fire could lead to electrocution. While using a CO₂ extinguisher on a Class A fire might not be effective. The color codes help ensure you’re choosing the safest and the most effective tool.

Know what to do in case of a home fire–Safe Home Fire Escape Plan