What is the discharge reach for the EFRS CO2 extinguisher?

• A. 2-4.5m
• B. 0-1m
• C. 1-2m
• D. 1-2.5m

Answer: (D)

Discharge reach is the distance the extinguishing agent travels from the nozzle when you discharge the extinguisher. CO2 exits as a cold, expanding gas plume and loses momentum quickly, so its effective reach is short. For Edmonton Fire Rescue Services, the CO2 extinguishers are specified to reach about 1 to 2.5 meters. That makes the option of 1-2.5 meters the best choice because it matches the practical and documented reach. The other ranges either understate or overstate what CO2 can reliably project; for instance, 0-1 meter is typically too short to reach the fire, while 2-4.5 meters is beyond the typical CO2 discharge reach, and 1-2 meters misses part of the standard maximum. So, the discharge reach is approximately 1 to 2.5 meters.