What is one disadvantage of CO2 extinguishers?

CO2 extinguishers are widely used for their effectiveness in suppressing fires, especially those involving flammable liquids and electrical equipment. However, one notable disadvantage of CO2 extinguishers is their short discharge range. These extinguishers release carbon dioxide in a gas form, which is effective in displacing oxygen and smothering the fire. However, the extinguisher delivers the CO2 at a relatively short distance, often around 3 to 8 feet. This limitation can make it challenging for a firefighter to maintain a safe distance from the flames, especially in larger or rapidly spreading fires. Additionally, the short range requires the operator to get closer to the fire, which could pose a risk, particularly if the fire is unstable or if there are potential flashbacks.

In contrast, the other factors listed do not accurately reflect disadvantages. CO2 has excellent non-conductive properties, making it suitable for electrical fires; the chemical is generally cost-effective as well; and CO2 does not leave a messy residue like some other extinguishing agents might. Thus, the primary concern with CO2 extinguishers is their limited discharge range.