A CO₂ extinguisher is designed for electrical fires and Class B fires that involve flammable liquids. It works by displacing oxygen to smother the flames.
Yes. CO₂ extinguishers are one of the safest options for electrical equipment because they leave no residue and do not damage electronics.
CO₂ extinguishers have a black label under UK fire safety standards.
Yes. They are widely used in server rooms, IT suites, offices and areas with sensitive electronics.
The most common sizes are 2kg and 5kg. A 2kg unit suits small offices and home setups. A 5kg unit is recommended for commercial sites or larger electrical risks.
CO₂ units must be manufactured to BS EN3 and should be part of a compliant fire-safety plan under BS 5306-8.
Our fire safety experts say they can, however, CO₂ is less effective in windy conditions because the gas can disperse quickly.
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