Posted on Tuesday, October 23, 2012 at 12:35 pm CDT
Recharging a fire extinguisher is a process that replaces the chemical agent that is expelled from the unit. This service is generally done for commercial buildings that have larger extinguishers which use a dry chemical substance. The cost of recharging fire extinguishers will depend on the size, the type, as well as the company that will be performing the service. Once a fire extinguisher is used, it must be recharged. During a recharge, the service will completely refill the extinguisher with a new agent. This process should not take longer than 10 to 20 minutes and can commonly be done at local fire stations or through private services. Keep in mind that single charge fire extinguishers cannot be recharged. To know if your fire extinguisher can be recharged, check for a gauge on the top.
Source: Recharging Fire Extinguishers