When should a fire extinguisher be replaced rather than serviced?

A fire extinguisher should be replaced rather than serviced when it is older than 20 years. This guideline is based on the fact that fire extinguishers have a limited lifespan. Over time, the components can deteriorate, making them less reliable in an emergency situation. The National Fire Protection Association (NFPA) recommends that extinguishers be replaced once they reach this age, as they may not function effectively, regardless of whether they appear to be in good condition or have been regularly serviced.

Contextually, other options do not meet the same criteria for replacement. For instance, while extinguishers that have been used in more than 10 fires may require servicing, they do not necessarily need to be replaced as long as they can be properly recharged and inspected. An extinguisher's weight does not inherently determine its need for replacement; extinguishers under 5 pounds can still be effective if they are well-maintained. Lastly, a yellow tag indicates that the extinguisher has been recently serviced and may not require replacement simply due to the tag's color. Each of these aspects is important in determining the life and maintenance of fire extinguishers, but the 20-year guideline stands as a crucial marker for replacement.