Fire extinguisher inspection checklist: monthly to 12-year, per NFPA 10
A complete fire extinguisher inspection checklist runs on four clocks under NFPA 10: a quick visual check every month, full maintenance by a trained technician every year, an internal examination every six years for stored-pressure units, and a hydrostatic test every twelve years. The checklists below cover all four — plus who’s allowed to do which.
Extinguishers are the easiest fire protection devices to forget, precisely because they’re the simplest. Nothing beeps when one drifts out of its pressure range. The wall bracket doesn’t complain when the unit walks off to prop a door. The checklist is the whole defense.
Prints clean — checkboxes and intervals only, no navigation or page furniture.
One note before the checkboxes: these frequencies summarize commonly adopted NFPA 10 requirements, as reflected in state fire-code guidance. Your AHJ, your state, and the adopted edition can require more — and workplaces also carry OSHA’s portable-extinguisher rules. When this page and your AHJ disagree, the AHJ wins.
Monthly fire extinguisher inspection checklist
Required every 30 days, and when the extinguisher is first placed in service. The monthly check is visual — no tools, a minute per unit — and it’s the one interval building staff can perform themselves:
- Extinguisher is in its designated location, mounted, visible, and unobstructed
- Access and visibility not blocked — nothing stacked in front, signage intact
- Pressure gauge needle in the operable (green) range
- Pull pin in place; tamper seal unbroken
- No corrosion, dents, leakage, or damage to shell, hose, or nozzle
- Nozzle clear of obstructions
- Operating instructions legible and facing outward
- Inspection tag present; record the check with date and initials
The record matters as much as the check. A monthly inspection with no documentation is, as far as the AHJ and the insurer are concerned, a monthly inspection that didn’t happen.
Annual maintenance checklist
Once a year, every extinguisher needs maintenance that goes beyond the visual — performed by a trained technician, which in practice means a licensed fire protection contractor:
- Thorough examination of mechanical parts — valve, handle, pin, bracket
- Extinguishing agent condition checked (weight or fill verified)
- Expelling means examined for pressure and function
- Hose and nozzle removed and inspected for blockage or cracking
- Physical condition of the shell assessed for corrosion or damage
- New tamper seal installed after servicing
- Service collar or verification-of-service label applied and dated
- Deficient units repaired, recharged, or replaced — not returned to the wall as-is
The multi-year clocks: 6-year internal and 12-year hydrostatic
The intervals shops get surprised by, because they don’t repeat often enough to build habit:
- Every 6 years — stored-pressure extinguishers requiring a 12-year hydrostatic test are emptied and given an internal examination by a trained technician
- Every 12 years — hydrostatic test to verify shell integrity (standard dry chemical types; some agent types run different intervals)
These clocks start at the manufacture date stamped on the unit, not at your contract start date. A device inventory that records the manufacture date per extinguisher is the only reliable way to see these coming across a few hundred customer sites.
Who can perform each interval?
The monthly visual can be done by trained building personnel — many facility teams handle it in-house, and many fire protection contractors include it in service contracts anyway because customers keep missing it. Annual maintenance, six-year internals, and hydrostatic testing require trained technicians with proper equipment; states typically license the firms that perform them. The owner of the building carries the compliance responsibility either way — hiring a contractor delegates the work, not the accountability.
How contractors keep hundreds of extinguisher clocks straight
One building’s extinguishers are easy. A service book with a few hundred sites — each holding ten to a hundred units with their own manufacture dates — is where the monthly-annual-6-year-12-year math turns into a scheduling problem no wall calendar survives.
The working method: every extinguisher in a per-site device inventory with manufacture date recorded, cadences generating the visit schedule automatically, and warnings 30, 14, and 7 days before anything comes due. Intelligent auto-assignment puts the right-credentialed technician on each visit, and work order documents keep the signed-off record attached to the visit it came from. That’s the same discipline as the rest of NFPA compliance tracking for fire protection contractors — extinguishers are the highest-count, lowest-drama version of it, and the fire protection case study shows it running in a real shop.
For the other systems’ intervals, see the complete fire inspection checklist covering NFPA 25 and 72, and the fire protection industry page for how the cadence engine runs it end to end.
Frequently asked questions
How often do fire extinguishers need to be inspected?
Can I do fire extinguisher inspections myself?
What happens if an extinguisher fails its inspection?
Where does the 6-year or 12-year clock start?
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