NAFFCO Carbon Dioxide (CO2) gas has a high ratio of expansion which facilitates rapid discharge and allows for dimentional penetration of the entire hazard area quickly. Carbon Dioxide extinguishes fire by reducing the oxygen content of the protected area below the point where it can support combustion.

Carbon dioxide fire extinguishing systems typically store the agent in one of the two different ways:

Due to extreme density of CO2, it quickly and effectively permeates the protected hazard area and suppresses the fire. Rapid expansion of the 4-6 inches of CO2 snow to gas reduces the ambient temperature in the protected hazard area which aids in the extinguishing process and retards reignition