Types of Fire Extinguishers and Where They Should Be Used

Fire extinguishers are an essential part of workplace fire safety. However, not every extinguisher is suitable for every type of fire. Different extinguishing agents are designed for different fire risks, making correct selection important for commercial buildings, industrial facilities, warehouses, and other workplaces.

Understanding the main types of fire extinguishers helps businesses identify suitable equipment for their premises and operational requirements.

Here are five common extinguisher types and their typical applications.

1. Water Fire Extinguishers

Best For: Ordinary combustible materials

Common Applications Include:

• Paper and cardboard

• Wood and timber

• Certain fabric materials

• Other ordinary solid combustible materials

Water extinguishers are designed for Class A fires involving ordinary combustible solids. They should not be used on energized electrical equipment or fires involving flammable liquids.

2. Foam Fire Extinguishers

Best For: Certain solid combustible and flammable liquid fires

Common Applications Include:

• Paper and wood

• Certain packaging materials

• Flammable liquid spills

• Suitable commercial and industrial environments

Foam extinguishers can help suppress fires involving ordinary combustible materials and certain flammable liquids. Their suitability depends on the extinguisher's rating and the specific fire risk.

3. Dry Powder Fire Extinguishers

Best For: Selected industrial, commercial, and vehicle fire risks

Common Applications Include:

• Flammable gases

• Flammable liquids

• Ordinary combustible materials, where the extinguisher is appropriately rated

• Certain vehicle and industrial environments

Dry powder extinguishers are available in different formulations and ratings. Businesses should select the correct type according to the hazards present, as some powders are not suitable for every fire class.

4. Carbon Dioxide (CO₂) Fire Extinguishers

Best For: Certain electrical equipment and flammable liquid fires

Common Applications Include:

• Electrical control panels

• Computers and electronic equipment

• Certain machinery

• Flammable liquid fire risks

CO₂ extinguishers discharge carbon dioxide, which helps suppress fire without leaving a powder or foam residue. They are commonly considered for electrical equipment areas, but their use requires appropriate precautions, particularly in confined spaces.

5. Wet Chemical Fire Extinguishers

Best For: Commercial kitchens and cooking oil fire risks

Common Applications Include:

• Deep-fat fryers

• Commercial cooking equipment

• Cooking oils and fats

• Restaurant and catering kitchens

Wet chemical extinguishers are designed for cooking oil and fat fires, commonly classified as Class F in many classification systems. They are an important consideration for commercial kitchens where cooking-related fire risks exist.

Selecting a fire extinguisher requires understanding the fire risks present in a building or workplace. The correct extinguisher type, rating, placement, and maintenance arrangements should be determined in accordance with applicable fire safety requirements.

At TFQ, we supply firefighting equipment and essential fire safety products to support the requirements of commercial, industrial, and emergency response environments.