NFPA 10 extinguisher ITM: monthly, annual, 6-year, 12-year
The working NFPA 10 inspection, testing, and maintenance schedule for US fire extinguishers in 2026. Monthly visual, annual maintenance, 6-year teardown, 12-year hydrostatic. What trips owners and what AHJs check first.
By Hovermarks team
Quick answer. NFPA 10 puts the monthly visual inspection of fire extinguishers on the building owner, the annual maintenance on a certified technician, the 6-year internal teardown on a certified technician, and the 5- or 12-year hydrostatic test on a certified shop. The monthly check is the most-skipped (because owners contract it out by mistake), and the 6-year teardown is the second most-skipped. Insurance carriers and AHJs increasingly check both in renewal reviews.
A retail-property manager receives the annual fire extinguisher report from the contractor in 2026. All 28 extinguishers across the building got new annual tags. Manager files the report. Six months later the local fire marshal does a re-inspection and writes up 19 of the 28 extinguishers for missing monthly inspection entries between January and the inspection date. The manager protests: the annual was just done. The fire marshal points at the monthly inspection blocks on each tag. Every one is blank.
This is one of the most common NFPA 10 compliance gaps in the US. The annual maintenance is the contractor's job. The monthly inspection is the owner's job. Owners regularly assume the contractor covers both. The contractor doesn't, and the records show it.
NFPA 10 (Standard for Portable Fire Extinguishers) has been the US standard since 1921. The 2022 edition is the current operative version in most jurisdictions in mid-2026, with the 2025 update in early adoption. The frequencies are stable. The documentation requirements are what AHJs increasingly enforce.
Whose problem this is
NFPA 10 Section 4.1 puts ITM responsibility on the property owner. The standard explicitly separates the monthly inspection (Section 7.2) from the annual maintenance (Section 7.3) and identifies the monthly as a recurring duty that does not require certification.
For multi-tenant buildings, the lease language matters. A net lease may push the cost of contractor visits to the tenant, but the monthly inspection responsibility typically stays with the owner. AHJs cite the owner when the monthly inspection blocks are blank.
What's actually being asked of you
NFPA 10 frames the ITM regime around four distinct activities, each at a different frequency:
- Inspection (monthly). A quick visual check by anyone trained to do it. Confirms the extinguisher is present, charged, accessible, and ready to use.
- Maintenance (annual). A more thorough examination by a certified technician. Confirms the operating components work as designed.
- Internal examination (every 6 years for stored-pressure). A teardown of the extinguisher down to the bare cylinder, with new agent and new pressurization.
- Hydrostatic test (every 5 or 12 years depending on type). A pressure test of the cylinder itself by a certified hydrostatic testing facility.
Skip any one of these and the extinguisher is not in compliance, even if the other three are current. AHJs check all four during inspections.
The frequency map
Monthly (owner-side)
The monthly inspection covers seven points on every extinguisher:
- Location is the designated location
- Access is unobstructed
- Pressure gauge reads in the operating range (green band)
- Tamper seal and pull-pin are in place and intact
- Body is free of physical damage and corrosion
- Annual maintenance tag is current
- HMIS label and operating instructions are readable
Each check gets recorded on the extinguisher's tag (with date and initials) or in a separate per-extinguisher log. NFPA 10 accepts either. The 30-second-per-extinguisher rule of thumb means a 30-extinguisher property is a 15-minute monthly walk.
Annual (certified technician)
The annual maintenance under Section 7.3 includes:
- Visual examination of the cylinder, agent, hose, gauge, and discharge nozzle
- Verification of the operating mechanism (handle, lever, safety pin)
- Weighing of cartridge-operated and CO2 extinguishers to confirm agent weight is within the listed range
- Examination of the locking pin and tamper indicator
- Confirmation that the operating pressure (where applicable) is within the listed range
- Application of a new annual maintenance label and signature on the durable record tag
Annual maintenance is logged centrally as well as on the extinguisher tag.
6-year teardown (stored-pressure extinguishers only)
Every 6 years, stored-pressure extinguishers (most dry chemical, water, foam, and clean agent extinguishers in modern US buildings) are completely discharged, broken down, internally examined for corrosion or agent caking, recharged with new agent, and re-pressurized. A 6-year mark on the durable label confirms the work.
Water mist and certain specialty extinguishers have different intervals under Section 7.3. Refer to the standard for the specific type.
5-year hydrostatic test
- Stored-pressure water extinguishers
- Wetting agent extinguishers
- Loaded stream extinguishers
- Wet chemical extinguishers (some)
- CO2 extinguishers
12-year hydrostatic test
- Stored-pressure dry chemical extinguishers
- Stored-pressure dry powder extinguishers
- Stored-pressure clean agent extinguishers
- Wet chemical extinguishers (most)
- Halogenated agent extinguishers
- Carbon dioxide cylinders for hand-portable extinguishers (5-year on the cylinder itself)
A hydrostatic test sends the cylinder to a certified shop, where it is pressurized to a multiple of the listed working pressure (typically 600 psi for stored-pressure types). A passed test gets a new hydrostatic test sticker with the month and year. A failed cylinder is condemned and replaced.
The five regimes that catch owners out
1. Monthly inspection is contracted out by mistake. Owners assume the annual contract covers the monthly. It does not. The monthly is owner-side. The blank monthly inspection blocks on the tags are the single most common AHJ citation.
2. The 6-year teardown is missed. The interval is firm. Without it, the extinguisher is not compliant even if the annual has been done every year. Most AHJs check the 6-year mark on the durable label; absence is an immediate finding.
3. CO2 cylinders are treated as having a 12-year hydrostatic test. They do not. CO2 hand-portable extinguishers have a 5-year hydrostatic test on the cylinder. Stored-pressure dry chemical, by contrast, has a 12-year test. Mixing these up is one of the most common contractor errors that owners inherit.
4. The annual maintenance label is applied but the durable record tag is not updated. NFPA 10 requires BOTH the annual label (showing the month and year) AND a signature on the durable record tag (or equivalent permanent record). Contractors who only apply the new label without signing the tag have completed the work but not the record.
5. Records are kept on the extinguisher only. The per-extinguisher tag is the primary record but not the only required record. Section 7.5.1.1 requires that the owner maintain central records for the inspection, maintenance, recharge, and hydrostatic test of each extinguisher. AHJs increasingly ask to see the central log.
What good looks like
A US owner with a clean NFPA 10 posture can answer six questions, fast, about every extinguisher in the portfolio.
What is the type (water, CO2, dry chemical), where is it, what is its rating (e.g., 4A:60BC), and what is the cylinder's manufacture date? When was the last monthly visual inspection, who did it, and what was the next-due date? When was the last annual maintenance, who is the certified technician, and what is the certification number? When is the 6-year teardown next due (for stored-pressure types)? When is the hydrostatic test next due (5-year or 12-year, depending on type)? If the extinguisher had to be used today, would the pressure gauge read in the operating range, the tamper seal still be intact, and the agent discharge cleanly?
If you can answer those six on the spot for every extinguisher, the compliance posture is sound. If not, there is documentation work to do.
For background on water-based fire protection ITM (sprinklers, fire pumps, standpipes), see NFPA 25 ITM: what building owners actually have to do. For fire alarm system ITM, see NFPA 72 fire alarm ITM: the working schedule for US owners.
The platform we build at Hovermarks is shaped around those six questions for NFPA 10 and the other ITM regimes US owners run alongside it. But you do not need a platform to answer them. You need a record system that an AHJ, an insurance loss-control engineer, or a new facility manager can walk through without your help. If yours cannot, that is where to start.
Disclaimer. This guide reflects the position under NFPA 10 (2022 edition) as adopted in most US jurisdictions in mid-2026. Specific compliance questions should be referred to a licensed fire extinguisher service company or your local Authority Having Jurisdiction.