What is one benefit of using CO2 extinguishers?

One significant benefit of using CO2 extinguishers is that they leave no residue after use. This is particularly advantageous in situations where a clean environment is crucial, such as in electronic equipment or sensitive materials. CO2 extinguishers work by displacing oxygen around the fire, effectively suffocating it without contaminating the area with chemical residues, powders, or foams that can be difficult and costly to clean up afterward. This makes them an ideal choice for commercial settings and areas where cleanliness is a top priority.

The other options do not align with the main advantages of CO2 extinguishers. While some CO2 extinguishers can be lightweight, not all are, and this characteristic can vary widely between different models. Additionally, CO2 extinguishers are typically not refillable in the same way as some other types; they are commonly replaced when emptied. Lastly, CO2 extinguishers tend to be more expensive than other types, such as water or foam extinguishers, due to the technology and gas involved in their design and operation.