Fire extinguishers need to be recharged immediately after each use. Even if the extinguishing agent inside was not completely discharged, the extinguisher still needs to be serviced in order to make sure it is ready for its next use. Even a minimal discharge will normally result in leakage and an eventual total loss of pressure needed for proper operation. We refill the chemical powder, foam, CO2, and water. Finally, we pressurize the cylinder and fix a new seal. Please call for any inquiries.