How Long Do Fire Extinguishers Last?

4/3/2018 (Permalink)

Apartment fire in Encino, CA; notice the ash covering the ground.

Fire extinguishers last between five and 15 years but they all ultimately expire and become ineffective, no matter what fire-fighting substance they contain. Household fire extinguishers—which are typically filled with dry chemicals (carbon dioxide or halon)—lose their charge over time. Those with compressed gas can leak contents slowly as their seals weaken, while those with ammonium phosphate will solidify over the years, rendering the entire device unusable. Read on to get a handle on the age and effectiveness of your fire extinguisher, plus tips on how to extend its life, get it serviced, and dispose of it correctly if necessary. Store a fire extinguisher in a clean, indoor location can help extend its life. Exposure to sun, UV radiation, wind, or rain can cause corrosion, rust, and deterioration. If the canister is dented or bruised, or if the tamper seal and pin are missing, there’s a possibility that it might explode unprompted. Examine the entire unit and if it’s not in good shape, properly dispose of it without delay.