CO2 extinguishers are predominantly used for electrical fire risks and are usually the main fire extinguisher type provided in computer server rooms. They also put out Class B fires (flammable liquids, such as paint and petroleum).

CO2 extinguishers suffocate fires by displacing the oxygen the fire needs to burn.

Types of premises/business who may need CO2 extinguishers:
Premises with electrical equipment, such as:
o Offices
o Kitchens
o Construction sites
o Server rooms