Fire extinguishers need maintenance and inspections to ensure they are ready for a fire emergency. In the State of Texas portable fire extinguishers being used in a commercial/business environment is required by OSHA and the Fire Marshall to be inspected annually. This inspection must only be performed by a licensed technician. The Annual Inspection (also called Annual Maintenance) in Texas, is a thorough examination of each fire extinguisher’s essential components to ensure proper operation.