CO2 Fire Extinguishers

Shop CO2 fire extinguishers for fires involving electrical equipment and flammable liquids (Class B). Choose from 2kg and 5kg portable CO2 extinguishers and wheeled units from Commander, CommanderEDGE, CheckFire, Firechief, Jewel, Jactone and Ceasefire.

CO2 extinguishers we stock

• 2kg CO2 extinguishers for offices, schools and server rooms, including squat, slimline and polished aluminium versions.
• 5kg CO2 extinguishers with hose and horn for larger electrical risks.
• Wheeled CO2 units of 10kg, 20kg and 30kg for larger Class B and electrical risks.
• Remanufactured and refurbished CO2 extinguishers from the CommanderEDGE, Commander Renovate and Jewel ranges.

Browse by brand: Commander fire extinguishers, CheckFire, Firechief, Jewel, Jactone and Ceasefire.

Choosing a CO2 fire extinguisher

• Match it to the risk. CO2 gas is non-conductive and will not damage electrical equipment, so it suits fires involving live electrical equipment. It can also be used on Class B flammable liquid fires.
• Know its limits. CO2 does not cool burning material, so it is not suitable for Class A fires (wood, paper, textiles). Never use it on cooking oil or fat fires. For those, use a wet chemical fire extinguisher.
• Think about the space. CO2 displaces oxygen and can be harmful in confined spaces, so ventilate the area after use.
• Cover the other fire risks. CO2 does not cover Class A risks, so you may also need a water or foam fire extinguisher. Your fire risk assessment, or a competent person, should confirm the type, size and number you need.

Complete the installation with fire extinguisher stands, fire extinguisher ID signs and spares such as replacement horns and pins.

Why buy from JEM Systems UK

JEM Systems UK is an authorised distributor of CheckFire and Firechief. Every product we sell is genuine, and new extinguishers are supplied brand new and factory sealed. Remanufactured, renovated and refurbished units are described as such on each product page. Buy online with fast, tracked UK delivery.

CO2 fire extinguisher FAQs

What is a CO2 fire extinguisher used for?

It is used mainly on fires involving live electrical equipment, and it is also suitable for Class B fires involving flammable liquids such as petrol or oil.

What colour is a CO2 fire extinguisher?

In the UK, a CO2 extinguisher is identified by a black label or band marked CO2, and it usually has a black discharge horn.

What fires should you not use a CO2 extinguisher on?

Do not use CO2 on Class A fires involving solids, because it does not cool the fuel and the fire can re-ignite. Never use it on cooking oil or fat fires.

Why should you not hold the horn of a CO2 extinguisher?

The horn becomes very cold during discharge and can cause severe frost burns, so never hold the horn when using the extinguisher.

Need a different type? See our dry powder fire extinguishers, water mist fire extinguishers, lithium battery fire extinguishers or all fire extinguishers.