Automatic CO₂ fire extinguishing systems are valued for their rapid action, residue-free discharge, and effectiveness on Class B and Class C fires (flammable liquids and electrical equipment). However, because CO₂ displaces oxygen, the system includes safety features such as alarms, time delays, and warning signs to allow personnel to evacuate before discharge. Proper design, installation, and maintenance in accordance with recognized fire protection standards—such as those issued by the National Fire Protection Association under NFPA 12 Standard on Carbon Dioxide Extinguishing Systems—are essential to ensure reliable and safe operation.
