Updated:12 October 2026
Rank 1-14 of the best CO2 Fire Extinguishers
Our recommendation Price Customer rating
1. Comparison winner
FireShield Economy 2kg CO2 Fire Extinguisher with Red Stand
FireShield Economy 2kg CO2 Fire Extinguisher with Red Stand
Available immediately
free shipping
  • fire rating indicates suitability for class B fires and electrical fires
  • corrosion resistance provided by the ABS injection moulded stand which resists water, dust and knocks
  • suitable for class B and class C fires including electrical equipment fires
Our rating
9,8
very good
2. Best value
FSS UK 2KG CO2 Fire Extinguisher with Fire Blanket
FSS UK 2KG CO2 Fire Extinguisher with Fire Blanket
Available immediately
free shipping
  • suitable for Class B and C fires involving flammable liquids and electrical equipment
  • simple to use design ensures ease of operation
  • includes necessary accessories for immediate use
Our rating
9,8
very good
FireShield 5kg CO2 Fire Extinguisher with Swivel Horn
FireShield 5kg CO2 Fire Extinguisher with Swivel Horn
Available immediately
free shipping
  • resistant to corrosion
  • suitable for classes b and c
  • easy to use
Our rating
9,6
very good
4. Bestseller
FireShield 2 kg CO2 Fire Extinguisher
FireShield 2 kg CO2 Fire Extinguisher
Available immediately
free shipping
  • for use on class b and electrical fires
  • wall bracket included
  • kitemarked to bs en3 and ce certified
Our rating
9,6
very good
FireShield 5kg CO2 Fire Extinguisher
FireShield 5kg CO2 Fire Extinguisher
Available immediately
free shipping
  • corrosion-resistant design for enhanced durability
  • suitable for classes B and C
  • easy to operate for quick and efficient use
Our rating
9,6
very good
FireShield 2kg CO2 Fire Extinguisher
FireShield 2kg CO2 Fire Extinguisher
Available immediately
free shipping
  • corrosion-resistant finish ensures durability
Our rating
9,6
very good
2 kg CO2 Fire Extinguisher, BSI Kitemarked
2 kg CO2 Fire Extinguisher, BSI Kitemarked
Available immediately
free shipping
  • suitable for use on class B and electrical fires
  • simple operation with a discharge time of 10 seconds and range of 4 metres
  • supplied with wall bracket and horn
Our rating
9,4
good
CO2 Fire Extinguisher 2kg - 34B Rating
CO2 Fire Extinguisher 2kg - 34B Rating
Available immediately
free shipping
  • suitable for class B and C fires including flammable liquids and fires involving live electrical equipment
  • corrosion-resistant design for reliable performance under critical conditions
  • easy to install with included mounting hardware and straightforward maintenance
Our rating
9,4
good
FireShield Economy 2kg CO2 Extinguisher
FireShield Economy 2kg CO2 Extinguisher
Available immediately
free shipping
  • corrosion resistant finish provides long-lasting durability
Our rating
9,3
good
MFE 2KG CO2 Fire Extinguisher
MFE 2KG CO2 Fire Extinguisher
Available immediately
free shipping
  • fire rating of 34B, suitable for class B liquid and class C electrical fires
  • corrosion-resistant finish
  • suitable for use on class B and C fires
Our rating
9,1
good
Firechief FXC2S CO2 Extinguisher 2 kg
Firechief FXC2S CO2 Extinguisher 2 kg
Available immediately
free shipping
  • fire rating: 34B, suitable for class B and C fires
  • corrosion-resistant finish for durability
  • easy to install with supplied bracket
Our rating
9,1
good
Firechief FXC2 CO2 Extinguisher, 2 kg
Firechief FXC2 CO2 Extinguisher, 2 kg
Available immediately
free shipping
  • fire rating of 34B
  • resistant to corrosion
  • suitable for class B and C fires
Our rating
9,1
good
Jewel Fire Group 2kg CO2 Fire Extinguisher - Class B & Electrical Fires, BS EN3 UKCA Certified, Frost-Free Horn & Wall Bracket Included
Jewel Fire Group 2kg CO2 Fire Extinguisher - Class B & Electrical Fires, BS EN3 UKCA Certified, Frost-Free Horn & Wall Bracket Included
Available immediately
free shipping
  • suitable for Class B flammable liquid fires
  • easy to operate thanks to a frost-free horn that enables safer, controlled discharge when every second counts
  • supplied with a wall bracket for mounting
Our rating
9,0
good
No reviews yet
A2Z Fire 2kg CO2 Fire Extinguisher
A2Z Fire 2kg CO2 Fire Extinguisher
Available immediately
free shipping
  • fire resistance rating for safety
  • corrosion-resistant for durability
  • suitable for classes B and C
Our rating
9,0
good

Similar CO2 Fire Extinguisher comparisons

CO2 Fire Extinguishers buying guide: How to choose the right product from the above CO2 Fire Extinguishers test or comparison

Understanding CO2 Fire Extinguishers: How They Work and When to Use Them

How CO2 Extinguishers Function Effectively

Carbon dioxide (CO2) fire extinguishers work by displacing oxygen, which is essential for combustion. When the CO2 is released, it rapidly cools the flames and cuts off the oxygen supply, effectively suffocating the fire. Understanding this mechanism is crucial because it helps us know that CO2 extinguishers are particularly effective for fires involving electrical equipment and flammable liquids. They leave no residue, making them ideal for use in places like offices and laboratories where clean-up is a priority.

Recognising the Appropriate Scenarios for Use

However, it’s important to use CO2 extinguishers in the right situations. They are not suitable for fires involving ordinary combustibles like wood or paper, as the CO2 may not sufficiently cool down the flames. Knowing when to grab a CO2 extinguisher can make all the difference in managing a fire effectively without escalating the situation.

Why Choose a CO2 Fire Extinguisher: Key Benefits for Your Safety

Advantages for Electrical and Liquid Fires

Choosing a CO2 fire extinguisher offers significant benefits, especially in environments where electrical hazards or flammable liquids are present. They provide a clean and efficient method to extinguish fires without leaving a mess, unlike water or foam extinguishers which can cause damage to sensitive equipment. This means we can protect our valuables while ensuring the safety of the environment.

Lightweight and Easy to Use

Another critical benefit is their lightweight design, making CO2 extinguishers easy to handle. Many models come with features that enhance usability, such as ergonomic handles and simple operation mechanisms. This ensures that in an emergency, we can quickly react and effectively extinguish the fire.

Choosing the Right Size: How to Select the Perfect CO2 Fire Extinguisher for Your Needs

Understanding Fire Extinguisher Sizes

When selecting a CO2 fire extinguisher, size matters. It’s essential to match the extinguisher’s capacity to the potential fire risk in your surroundings. For example, smaller models, often rated at 2kg, are suitable for home offices or small server rooms. Larger options, up to 5kg or more, are ideal for industrial settings or larger commercial spaces where greater fire risks exist.

Assessing Your Environment’s Requirements

We should also consider factors such as the specific types of hazards present and the size of the area that needs protection. If you’re in a more expansive workspace or near equipment that can ignite, a bigger unit ensures we have a sufficient reserve to combat a potential fire.

Where to Place Your CO2 Fire Extinguisher: Optimal Locations for Maximum Safety

Identifying Strategic Locations

Placement of your CO2 fire extinguisher is equally vital. We recommend placing extinguishers near potential fire sources, such as electrical panels or areas where flammable liquids are stored. They should be easily accessible, mounted or positioned at eye-level, ensuring that in the event of a fire, we can reach them quickly.

Accessibility and Visibility Considerations

Additionally, mounting them in visible locations increases the likelihood that anyone in the vicinity will be able to locate them during an emergency. Always ensure that pathways to extinguishers are clear, and inform all staff or family members of their locations to enhance safety preparedness.

Maintenance Tips for Your CO2 Fire Extinguisher: Keeping It Ready for Action

Routine Inspections and Checks

To ensure your CO2 fire extinguisher is always ready to perform when needed, regular maintenance is key. We recommend inspecting the pressure gauge monthly; it should always be in the green zone indicating adequate pressure. Check for any signs of damage or rust on the body of the extinguisher.

Annual Professional Servicing

Moreover, scheduling annual servicing with a professional ensures that internal components are functioning correctly. This routine servicing may include recharging or replacing the extinguisher if it’s used or has been discharged, which helps guarantee our safety.

Table of contents
  1. Understanding CO2 Fire Extinguishers: How They Work and When to Use Them
  2. Why Choose a CO2 Fire Extinguisher: Key Benefits for Your Safety
  3. Choosing the Right Size: How to Select the Perfect CO2 Fire Extinguisher for Your Needs
  4. Where to Place Your CO2 Fire Extinguisher: Optimal Locations for Maximum Safety
  5. Maintenance Tips for Your CO2 Fire Extinguisher: Keeping It Ready for Action

Overview

1. Comparison winner
FireShield Economy 2kg CO2 Fire Extinguisher with Red Stand
Our rating
9,8
very good
FireShield Economy 2kg CO2 Fire Extinguisher with Red StandAvailable immediately
2. Best value
FSS UK 2KG CO2 Fire Extinguisher with Fire Blanket
Our rating
9,8
very good
FSS UK 2KG CO2 Fire Extinguisher with Fire BlanketAvailable immediately
FireShield 5kg CO2 Fire Extinguisher with Swivel Horn
Our rating
9,6
very good
FireShield 5kg CO2 Fire Extinguisher with Swivel HornAvailable immediately
4. Bestseller
FireShield 2 kg CO2 Fire Extinguisher
Our rating
9,6
very good
FireShield 2 kg CO2 Fire ExtinguisherAvailable immediately
FireShield 5kg CO2 Fire Extinguisher
Our rating
9,6
very good
FireShield 5kg CO2 Fire ExtinguisherAvailable immediately
FireShield 2kg CO2 Fire Extinguisher
Our rating
9,6
very good
FireShield 2kg CO2 Fire ExtinguisherAvailable immediately
2 kg CO2 Fire Extinguisher, BSI Kitemarked
Our rating
9,4
good
2 kg CO2 Fire Extinguisher, BSI KitemarkedAvailable immediately
CO2 Fire Extinguisher 2kg - 34B Rating
Our rating
9,4
good
CO2 Fire Extinguisher 2kg - 34B RatingAvailable immediately
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