What Is a CO2 Fire Extinguisher Used For?

Carbon dioxide (CO2) fire extinguishers are vital tools in fire safety, particularly for environments with electrical equipment and flammable liquids. Known for their clean and residue-free discharge, these extinguishers are widely used in offices, labs, and server rooms.

This comprehensive guide will explain what a CO2 fire extinguisher is used for, its benefits and drawbacks, where not to use it, and how long it lasts. We’ll also answer three of the most frequently asked questions to help you choose the right extinguisher for your space.

What Is a CO2 Fire Extinguisher?

A CO2 fire extinguisher is a pressurized device filled with carbon dioxide gas. When discharged, it expels CO2 to remove oxygen from the fire’s surroundings and cools the surface of the fuel.

• Agent: Carbon Dioxide (CO2)
• Class of Fires: Class B (flammable liquids) and Class C (electrical equipment)
• Color Code: Black label or band

These extinguishers leave no residue and do not damage electrical components.

What Are the Benefits of a CO2 Fire Extinguisher?

CO2 fire extinguishers offer several clear advantages:

• No residue – Ideal for computers, servers, and electronics
• Non-conductive – Safe for live electrical fires
• No cleanup required – Unlike powder extinguishers
• Effective cooling – Reduces chance of reignition
• Compact and efficient – Quick deployment

These features make CO2 fire extinguishers a go-to solution in tech-heavy environments.

Where Is a CO2 Fire Extinguisher Commonly Used?

CO2 extinguishers are used in settings such as:

• IT Rooms and Data Centers
• Hospitals and Labs
• Corporate Offices
• Retail Shops
• Chemical and Paint Storage Areas
• Workshops with flammable liquids

They are best used on:

• Flammable liquid fires (oil, petrol, solvents)
• Electrical equipment fires (computers, switchboards)

Where Is a CO2 Extinguisher Not Used?

Avoid using CO2 fire extinguishers in the following scenarios:

• Class A fires (wood, paper, textiles)
• Outdoor fires – CO2 disperses quickly
• Confined unventilated spaces – Risk of asphyxiation
• Kitchen fires involving oil pans – Not effective for grease fires

In such situations, a water mist or wet chemical extinguisher would be more suitable.

How Does a CO2 Fire Extinguisher Work?

The extinguisher functions through two actions:

1. Displacement of oxygen – Fires need oxygen to burn. CO2 displaces this oxygen.
2. Cooling effect – The release of CO2 is extremely cold, lowering the temperature around the fire source.

This dual action quickly brings electrical and flammable liquid fires under control.

What Is the Lifespan of a CO2 Fire Extinguisher?

The typical lifespan of a CO2 fire extinguisher is 10–15 years, depending on usage and maintenance.

To ensure optimal performance:

• Inspect monthly
• Service annually
• Conduct hydrostatic testing every 5 years
• Weigh to verify gas content

Always recharge immediately after use—even partial discharge.

Advantages of the Agni Hunt CO2 Fire Extinguisher

The Agni Hunt CO2 Fire Extinguisher is a versatile, high-capacity solution:

• Dual-agent: Combines water for Class A and CO2 for Class B
• ISI Certified: Meets Indian safety standards
• Durable design: Suitable for industrial and commercial use
• Portable size: Easy to mount and operate

A great option for facilities needing Class A and B fire protection.

CO2 Extinguisher Safety Tips

• Always hold the nozzle by the handle, not the horn (risk of frostbite)
• Use in ventilated areas to prevent CO2 buildup
• Maintain a distance of at least 1.5 meters while discharging
• Train all staff in the PASS method (Pull, Aim, Squeeze, Sweep)

PASS Method for Using CO2 Extinguishers

1. Pull the pin to break the tamper seal
2. Aim low, at the base of the fire
3. Squeeze the handle to release CO2
4. Sweep side to side until the fire is extinguished

Always ensure a clear escape route while attempting to extinguish a fire.

Regular Inspection and Maintenance

• Conduct visual checks monthly
• Confirm hydrostatic test date is valid
• Inspect discharge horn and hose for cracks or blockages
• Weigh the unit annually to ensure gas is not depleted

Routine checks ensure the extinguisher is ready when needed.

Conclusion: Choose the Right Tool for the Right Fire

CO2 fire extinguishers are indispensable for electrical and flammable liquid fires. They’re clean, effective, and ideal for sensitive environments where residue must be avoided.

For broader protection, especially in spaces that may encounter both Class A and B fires, the Agni Hunt CO2 Fire Extinguisher offers a reliable, ISI-certified solution.

FAQs

1. What are the benefits of a CO2 fire extinguisher?
CO2 extinguishers leave no residue, are safe for electrical equipment, cool the fire quickly, and require no cleanup.

2. Where is a CO2 extinguisher not used?
Avoid using them on Class A fires, grease fires in kitchens, outdoor fires, or in confined spaces without ventilation.

3. What is the lifespan of a CO2 fire extinguisher?
Typically 10–15 years with proper maintenance. Hydrostatic testing is required every 5 years.

Be proactive about safety.
Equip your business or home with the Agni Hunt CO2 Fire Extinguisher from Fire Supplies and ensure readiness for any fire emergency.