Carbon dioxide leaves nothing behind, which makes this extinguisher the right one to hang beside server racks, switchgear rooms, laboratories and generator sets. It starves the fire of oxygen and cools the fuel without wetting or coating the equipment it is protecting.

Because CO2 displaces breathable air, placement matters as much as the cylinder itself. Revere sites units where an operator can reach them and retreat, and briefs staff on discharging safely in a confined room.