A fire extinguisher inspection service performs the annual maintenance, internal examinations, recharging, and hydrostatic testing that NFPA 10 requires for portable extinguishers in commercial buildings, and tags each unit to document compliance. Monthly visual checks can be done by your own staff, but the annual maintenance and the multi-year tests must be performed by trained, certified personnel — which in most states means a licensed extinguisher service company.
The NFPA 10 schedule in plain terms
NFPA 10, the Standard for Portable Fire Extinguishers, sets a layered schedule:
Monthly visual inspection. Someone — typically in-house staff — confirms each extinguisher is in its designated place, unobstructed, charged (gauge in the operable range), and undamaged, with the pull pin and tamper seal intact. NFPA 10 permits these quick checks to be done by building personnel and recorded on the tag or in a log, with electronic monitoring as an alternative where installed.
Annual maintenance. A thorough examination of the mechanical parts, extinguishing agent, and expelling means, performed by certified personnel. The technician verifies the extinguisher against its maintenance requirements, replaces the tamper seal, and attaches a dated tag identifying the company and person who did the work.
Internal examination and recharging. At intervals NFPA 10 sets by extinguisher type — commonly six years for stored-pressure dry chemical units — the extinguisher is emptied, examined internally, recharged, and resealed with a verification collar.
Hydrostatic testing. Cylinders must be pressure-tested at intervals that depend on the type — commonly twelve years for stored-pressure dry chemical extinguishers and shorter intervals for some other types. This requires specialized equipment and DOT-compliant procedures, so it is strictly a service-company task.
Your local fire code adopts NFPA 10, and fire marshals check tags during routine inspections, so out-of-date tags are one of the most common and easily avoided fire-code violations.
What a service visit looks like
For a typical annual visit, the technician walks the building with a route list or your extinguisher inventory, services each unit in place or swaps it for a loaner if it needs shop work, updates tags, and leaves a report listing every extinguisher by location, type, size, and service performed. Good providers also flag placement problems — missing units for the hazard class, travel distances beyond what NFPA 10 allows, blocked access, or the wrong extinguisher type for the hazard (a kitchen needing a Class K unit, for example).
What it costs and why
Per-extinguisher annual service is inexpensive on its own — commonly in the range of a modest per-unit fee plus a trip charge — but the total depends on:
- Unit count and spread. A campus with hundreds of extinguishers across multiple buildings prices differently than a single storefront with six.
- Service due in that year. A year when many units hit their six-year internal examination or twelve-year hydrostatic test will cost noticeably more than a tag-only year. Ask the provider to map out your fleet's due dates so the expensive years do not surprise you.
- Recharges and replacements. Discharged, damaged, or obsolete units add recharge or replacement costs. For older extinguishers, replacement is often cheaper than testing.
- Bundling. Most fire protection companies discount extinguisher service when it rides along with sprinkler, alarm, or kitchen-suppression inspections.
Get an itemized quote that separates the annual service fee from conditional charges like recharges and hydro tests, and be wary of providers whose business model depends on aggressively upselling replacements on every visit.
Common compliance gaps
The problems service companies and fire marshals see most often: missing monthly inspection records, extinguishers that vanished from their brackets, expired tags after a change in facility staff, wrong extinguisher classes for the hazard, and units hidden behind storage. A simple monthly walk-through with a checklist closes most of these gaps at no cost.
How to choose and verify a provider
Most states license portable fire extinguisher service companies and certify their technicians through the state fire marshal — verify both before hiring, using your state's license lookup (the U.S. Fire Administration's directory of state fire-service agencies can point you to the right office). Ask what certification the technician servicing your units holds, whether the company performs hydrostatic testing in-house or subcontracts it, and request a sample service report showing per-unit detail. Confirm they will schedule around your fleet's six-year and twelve-year due dates rather than treating every visit identically.
Our directory lists fire protection companies with source-backed public records, including state licensing data where available, to help you compare providers near you. We are an independent directory and do not certify any company — confirm current licensing and insurance directly with your state fire marshal's office and the provider before you commit.