this post was submitted on 27 Apr 2026
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Wait they expire?
yeah they have best-before dates on them. i think they should be switched every few years or so
Having a fire blanket is also very helpful and they basically don't expire.
You don't need to replace them. You just need to get them retested. They should be retested every year. Most welding supply sotores or gas suppliers offer that service ond it's dirt cheap.
They have a pressure gauge too, which should be in the green.
Disposable extinguishers have to be replaced every 10 years or so. Used or not.
Rechargeable ones need internal service every 5 or 6 years depending on model, but with proper maintenance they can last indefinitely, but doing that costs money.