Water Fire Extinguishers

Our water fire extinguishers are designed for use on Class A fires. They create a cooling effect that reduces the temperature of burning materials, extinguishing the flames and preventing further damage.

All of our Fire Extinguishers are supply only and do not arrive commissioned. A competent installer is required.


Water Fire Extinguishers: Your First Line of Defense Against Class A Fires

Water fire extinguishers are a fundamental component of fire safety equipment, especially in environments where Class A fires—those involving combustible materials like wood, paper, and textiles—are a risk. Understanding the role of water fire extinguishers, how they operate, and when to use them in conjunction with other types of extinguishers, is crucial for ensuring the safety of your premises in the UK.

How Water Fire Extinguishers Work

Water fire extinguishers extinguish fires by cooling the burning materials below their ignition temperature, effectively stopping the combustion process. This type of extinguisher is most effective against Class A fires, where the cooling effect of water can rapidly reduce the fire’s temperature and prevent re-ignition.

When to Use Water Fire Extinguishers

  • Class A Fires: Ideal for fires involving organic solids such as wood, paper, fabrics, and certain plastics.
  • Safety Precautions: Water extinguishers should not be used on electrical fires (Class E), as water conducts electricity, posing a shock hazard. Nor are they suitable for flammable liquids (Class B) or cooking oil fires (Class F).

Complementing Water Fire Extinguishers with Other Types

While water fire extinguishers are essential, they’re part of a broader fire safety strategy that includes other types of extinguishers for different fire classes:

  • Foam Extinguishers: Also effective against Class A, plus Class B fires involving flammable liquids. Foam forms a barrier between the fuel and the air, suffocating the fire.
  • CO2 Extinguishers: Best for electrical fires and some flammable liquids, as CO2 displaces oxygen without leaving residue.
  • Dry Chemical Extinguishers: Versatile for Class A, B, and C fires, including combustibles, flammable liquids, and gases. They interrupt the chemical reaction of a fire.
  • Wet Chemical Extinguishers: Specifically designed for Class F fires, such as cooking oils and fats, by creating a soap-like solution that cools and smothers the fire.

Maintenance and Training

Regular maintenance checks are vital to ensure your water fire extinguisher is ready for use when needed. Training for staff on the correct use of water fire extinguishers—and when it’s appropriate to switch to another type based on the fire class—can significantly enhance safety and response times during an emergency.


Water fire extinguishers are a critical part of your fire safety arsenal, particularly for Class A fires. However, understanding their limitations and how they fit into a comprehensive fire protection plan with other extinguisher types can ensure your premises are prepared for various fire emergencies. Ensure your fire safety measures are complete by exploring our range of foam, CO2, dry chemical, and wet chemical extinguishers, each tailored to meet specific fire challenges.

Water Fire Extinguishers FAQs (5)

Guides & Advice