Fire Extinguishers Explained: Types, Uses, and Workplace Responsibilities
Fire extinguishers are one of the most recognisable pieces of fire safety equipment in any workplace, yet many people are unsure which type to use or what their legal responsibilities are. In an emergency, having the right extinguisher in the right place can help control a small fire before it spreads and protect both people and property.
Across England, fire and rescue services attended 142,494 fires in the year ending March 2025, including thousands of incidents in non-residential buildings. This highlights why fire prevention, staff training, and compliant fire safety systems remain essential for UK businesses.
Why Fire Extinguishers Matter
A fire extinguisher is often the first line of defence when a fire starts. While evacuation should always be the priority, trained staff may be able to use an extinguisher to tackle a small fire safely if conditions allow.
However, using the wrong extinguisher can worsen the situation. For example, applying water to an electrical fire or burning oil can create serious danger. That is why understanding extinguisher types is so important.
Common Types of Fire Extinguishers
Water Extinguishers
Water extinguishers are designed for Class A fires involving solid combustibles such as wood, paper, cardboard, and textiles. They are commonly found in offices, schools, and warehouses. Do not use on: Electrical equipment or flammable liquids.
Foam Extinguishers
Foam extinguishers are suitable for Class A and Class B fires involving flammable liquids such as petrol or paint. They are often used in commercial premises, workshops, and garages.
CO2 Extinguishers
Carbon dioxide extinguishers are ideal for electrical fires involving computers, photocopiers, switchboards, and other live equipment. They leave no residue, making them popular in offices and server rooms.
Dry Powder Extinguishers
Powder extinguishers are versatile and can be used on Class A, B, and some electrical fires. They are often used in industrial environments and outdoor areas. However, powder can reduce visibility and create breathing difficulties in enclosed spaces.
Wet Chemical Extinguishers
Wet chemical extinguishers are specifically designed for Class F fires involving cooking oils and fats. They are essential in commercial kitchens, restaurants, and catering environments.
Understanding the different classes of fire is incredibly important to fire safety because not all fire extinguishers are suitable for every type of fire. You can learn more about the different classes of fire here.
Workplace Responsibilities for Fire Safety
Under UK fire safety law, employers and responsible persons must take suitable measures to reduce fire risks and protect occupants. This typically includes:
- Carrying out a fire risk assessment
- Providing appropriate fire extinguishers
- Ensuring extinguishers are serviced and maintained
- Training staff in emergency procedures
- Keeping escape routes clear
- Reviewing fire safety arrangements regularly
Failure to maintain fire safety standards can lead to enforcement action, fines, reputational damage, and increased risk to life.
Are Your Fire Extinguishers in the Right Place?
Simply owning extinguishers is not enough. They should be correctly positioned, clearly signed, easy to access, and suitable for the specific risks within your premises. Offices, kitchens, workshops, warehouses, and construction sites all have different fire safety needs.
A professional fire risk assessment can identify whether your current equipment and procedures are adequate.
How Westminster Compliance Can Help
Westminster Compliance provides expert fire safety consultancy services to help businesses meet their legal obligations and improve workplace safety. Our services include fire risk assessments, fire safety training, management systems, and wider compliance support for organisations across the UK.
If you need support with fire extinguishers, fire risk assessments, or overall workplace fire safety, contact us today for professional Fire Safety Consultancy services and practical expert guidance tailored to your business.
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