When attempting to fight a fire, where do you direct the flow of a portable CO2 extinguisher?

Directing the flow of a portable CO2 extinguisher at the base of the fire is the most effective approach because it targets the source of the flames. Fires burn from the base upwards, and by applying the extinguishing agent directly at the base, you are more likely to interrupt the combustion process. CO2 extinguishers work by displacing oxygen and smothering the fire, and if aimed at the base, the concentration of CO2 can effectively eliminate the oxygen needed for the fire to continue burning.

Additionally, aiming at the base allows for better control over the extinguishing agent, minimizing the chances of the flames spreading or re-igniting. This technique is especially critical in ensuring that the fire is fully suppressed rather than merely pushing it around or leaving it embers that could reignite later. Aiming incorrectly at the top or the sides may allow the fire to persist or even grow, as these areas might not address the critical point of ignition.