How long does a 15-pound CO2 extinguisher typically last?

A 15-pound CO2 extinguisher typically lasts 15-30 seconds when it is fully discharged. This duration can vary somewhat based on the specific model and how it is being used, but the general consensus for a 15-pound unit is that it provides an effective discharge time of around 20 seconds, falling within that range.

The operation of CO2 extinguishers involves the release of carbon dioxide gas to displace oxygen, thus smothering the fire. The timing is crucial for fire safety, as it allows the user to maximize the effectiveness of the extinguisher while also considering the rapidity with which fires can grow. Understanding the discharge duration helps users assess how much time they have to control a fire effectively before it potentially worsens or they need to switch to another extinguisher or fire suppression method.