“An annual service does not replace the checks needed during the other 364 days of the year.”
Fire extinguishers need to remain in the right place, accessible and ready for use. That calls for routine checks between visits from a service technician.
The maintenance schedule also depends on the extinguisher. Conventional water, foam, powder and CO₂ units do not all follow the same extended-service procedure, while Britannia P50 extinguishers have their own manufacturer-prescribed annual check and overhaul programme.
This guide explains the different checks, who carries them out and how to record them.
Quick Answer: How often should fire extinguishers be checked?
In normal conditions, a brief visual check each month is a useful way to confirm that extinguishers are present, accessible and apparently serviceable. Conventional extinguishers generally receive maintenance by a competent person annually, with an extended service or overhaul at the interval applicable to their type. Check the manufacturer’s instructions: Britannia P50 extinguishers, for example, require a recorded annual check by a trained, competent person but do not require a conventional external annual service during their first 10 years when that programme is followed.
Explore Velocity Safety’s fire extinguisher servicing and maintenance service.
Key Takeaways – Fire Extinguisher Checks
- Routine visual checks confirm that extinguishers remain present, accessible and free from obvious damage. In normal conditions, monthly checks are generally appropriate.
- Conventional extinguishers generally receive an annual basic service by a competent person.
- Extended servicing and overhaul depend on the extinguisher type, construction, condition and applicable instructions.
- P50 is not maintenance-free: Britannia requires annual checks by a trained, competent person and a manufacturer’s overhaul after 10 years for a further period of use.
- Damage or discharge needs action now; do not wait for the next scheduled visit.
- The responsible person should retain clear records and ensure defects are addressed.
Jump to:
What Does UK Fire Safety Law Require?
For premises in England and Wales, the Regulatory Reform (Fire Safety) Order 2005 requires the responsible person to provide appropriate firefighting equipment where necessary and ensure that fire safety equipment is subject to a suitable system of maintenance.
The Order does not itself list “monthly check”, “annual basic service” and “five-year extended service” as three universal statutory intervals. The practical maintenance programme draws on the fire risk assessment, recognised guidance, British Standards and the equipment manufacturer’s instructions.
Scotland and Northern Ireland have different fire safety legislation. The principle remains that firefighting equipment provided for a premises must be suitable and properly maintained.
Government fire safety guidance says that, in normal conditions, a brief monthly extinguisher check should be enough and maintenance by a competent person should be carried out annually. Exposure to weather, vandalism or demanding working conditions can call for more frequent checks.
Is an annual service a legal requirement?
The England and Wales Fire Safety Order requires a suitable maintenance system rather than specifying a universal 12-month service in Article 17.
For conventional portable extinguishers, annual competent-person servicing is the established approach in BS 5306-3 and government guidance. A responsible person needs a defensible maintenance arrangement and records showing that it is being followed.
A manufacturer-prescribed alternative, such as Britannia P50’s annual inspection programme, must be described accurately rather than treated as though the unit needs no maintenance.
Fire Extinguisher Check and Service Schedule
This table is a practical overview. The precise work due on an individual extinguisher depends on its model, service history, condition and manufacturer instructions.
| Extinguisher |
Routine Site Check |
Annual Maintenance |
Additional Scheduled Work |
| Conventional water or foam |
Visual checks; monthly is generally suitable in normal conditions. |
Basic service by a competent person. |
Extended service is generally due at five years, subject to the model and service history. |
| Conventional powder or wet chemical |
Visual checks; more often where the environment warrants it. |
Basic service by a competent person. |
Extended-service arrangements depend on the construction and applicable instructions; many conventional models have a five-year interval. |
| CO₂ |
Visual checks; CO₂ units normally have no pressure gauge. |
Basic service by a competent person. |
Cylinder overhaul and pressure testing at the applicable interval, commonly ten years. |
| Britannia P50 composite |
Routine condition and accessibility checks. |
Manufacturer-prescribed annual inspection, completed and recorded by a trained, competent person. |
Manufacturer’s overhaul after ten years if the unit is to enter its second ten-year period. |
Do not use the table as an instruction to discharge or dismantle an extinguisher yourself. A competent technician should determine the procedure due for each unit.
What Should a Routine Visual Check Include?
A routine site check is a brief observation, not an annual service. The person carrying it out should know what a defect looks like and how to report it.
Check that the extinguisher:
- Is present in its designated position
- Is visible, accessible and securely mounted
- Has not been used, discharged or tampered with
- Shows no obvious damage, leakage or corrosion
- Has a safety pin and tamper indicator in place where applicable
- Has a hose or horn that appears free from obvious damage or obstruction
- Has legible instructions and identification
- Has a pressure gauge in the correct range where that model has one
Record the check and report faults promptly. If a unit may be unserviceable, arrange a competent assessment and make sure suitable fire protection remains available.
Do not invert, shake, test-discharge or dismantle a powder extinguisher as a routine monthly check unless that action is specifically required by its manufacturer and your approved procedure. A quick visual check should not become an improvised service.
Should outdoor extinguishers be checked more often?
Possibly. Rain, frost, corrosion, vehicle movement and vandalism can increase the chance of a problem between scheduled checks. Set the frequency according to the conditions and check both the extinguisher and any cabinet or mounting.
What Happens During an Annual Fire Extinguisher Service?
For conventional extinguishers, a competent service technician assesses each unit according to its type and applicable procedure. The work can include:
- Confirming the make, model, location and service history
- Checking the extinguisher’s condition, weight or pressure as appropriate
- Examining its operating parts, hose, horn, seals and markings
- Identifying damage, corrosion, discharge or tampering
- Checking whether the unit remains suitable and correctly positioned
- Determining whether extended service, overhaul, repair or replacement is due
- Documenting the findings, work completed and any defects
The procedure varies by extinguisher type. Competence matters; a business does not have to assume that a particular third-party registration is itself a legal requirement, although independent certification can help when choosing a provider.
Learn about Velocity Safety’s fire extinguisher servicing and maintenance.
What Is a Five-Year Extended Service?
Many conventional water, foam, powder and wet chemical extinguishers require an extended service at an applicable interval, commonly five years. It is more involved than a routine annual basic service and may include a test discharge, examination, recharge and checks specified for that extinguisher type.
The technician should use the correct procedure for the particular model. Some constructions, including primary-sealed and specialist extinguishers, have different arrangements. It is therefore misleading to promise that every extinguisher of a broad agent type will undergo exactly the same work at five years.
A damaged or failed unit may be repaired, recharged or replaced depending on its condition, the manufacturer’s instructions and whether continued service is appropriate or economical.
When Is a CO₂ Extinguisher Overhaul Due?
CO₂ extinguishers are high-pressure cylinders. In addition to routine checks and annual maintenance, they are subject to an overhaul and pressure-test programme at the applicable interval, commonly ten years.
This work is handled through an appropriate cylinder test process. A service provider can determine whether overhaul or replacement is appropriate for the particular unit.
A routine visual check or annual basic service is not the same procedure as a CO₂ cylinder overhaul.
Do P50 Fire Extinguishers Need Annual Checks?
Yes. “Service-free” does not mean “maintenance-free.”
Britannia P50 extinguishers do not require a conventional external annual service during their first ten years when the prescribed annual maintenance inspection is completed correctly. That inspection must still be carried out and recorded by a trained, competent person following the manufacturer’s procedure.
The checks include the condition of the unit, its gauges and other prescribed indicators. Damage, discharge, tampering or an unacceptable result must be acted on rather than left until the next annual date.
A P50 has a potential 20-year lifecycle. At ten years, a manufacturer’s overhaul is required if the extinguisher is to enter a second ten-year period. It should not simply be relabelled or automatically thrown away at that point.
Explore Velocity Safety’s P50 assessment, supply, installation and commissioning service.
When Should an Extinguisher Be Assessed or Replaced Early?
A scheduled date is not a reason to leave a known defect unresolved. Arrange assessment promptly if an extinguisher:
- Has been used or partially discharged
- Is leaking, corroded, dented or otherwise damaged
- Shows an incorrect gauge reading, where a gauge is fitted
- Has missing or damaged operating parts
- Has been exposed to conditions outside its rated temperature range
- Fails a service, extended service or prescribed inspection
- No longer suits the fire risks or location
The appropriate action may be repair, recharge, overhaul, relocation or replacement. A competent provider can advise on the specific unit. Extinguishers removed from service can be handled through a suitable disposal arrangement.
What Records Should a Business Keep?
Clear records make it easier to spot missed work and demonstrate how the equipment has been maintained. Depending on the premises and extinguisher programme, retain:
- An inventory showing each unit and its location
- Routine visual-check records and reported defects
- Annual service reports and remedial work
- Extended-service or overhaul records where applicable
- P50 annual inspection and manufacturer-overhaul records where applicable
- Evidence of replacement, relocation or disposal
A service label is useful, but it does not replace a complete record of defects and the action taken.
Which British Standards Apply?
The relevant parts of the BS 5306 series have different jobs:
- BS 5306-3: Commissioning and maintenance of portable fire extinguishers.
- BS 5306-8: Selection and positioning of portable fire extinguishers.
- BS 5306-9: Recharging of portable fire extinguishers.
These are codes of practice rather than a replacement for the legislation or the instructions for an individual product. In particular, commissioning belongs in BS 5306-3; BS 5306-9 concerns recharging.
Final Takeaway
For a conventional extinguisher in normal workplace conditions, think in layers: routine visual checks, annual competent-person maintenance and any extended service or overhaul due for its particular type.
For a Britannia P50, follow its different manufacturer programme: routine condition checks, a recorded annual inspection by a trained, competent person and a manufacturer’s overhaul at ten years if it is to continue in use.
Whatever the model, act on damage or discharge immediately. A date on a label cannot make a faulty extinguisher serviceable.
Frequently Asked Questions
How often should fire extinguishers be checked in a UK workplace?
In normal conditions, a brief visual check each month is generally suitable. Conventional extinguishers also generally receive annual maintenance by a competent person, with further work due according to type and instructions.
Is monthly checking written into the Fire Safety Order?
The England and Wales Fire Safety Order requires a suitable maintenance system; it does not specify a universal monthly interval. Government guidance says a monthly brief check should be enough in normal conditions. Higher-risk locations may need more frequent checks.
Is annual fire extinguisher servicing a legal requirement?
The Fire Safety Order does not state “every 12 months” in its maintenance article. Annual competent-person servicing is the established approach for conventional extinguishers under BS 5306-3 and government guidance. Follow the applicable manufacturer programme for specialist units such as P50.
Do P50 fire extinguishers need checking every year?
Yes. Britannia requires an annual maintenance inspection completed and recorded by a trained, competent person. The absence of a conventional external annual service does not mean the extinguisher can be left unchecked.
Do all extinguishers need an extended service after five years?
No. The procedure and interval depend on the extinguisher’s construction and type. Many conventional water, foam, powder and wet chemical models have a five-year extended-service cycle, but primary-sealed, CO₂, P50 and other specialist models can differ.
How often does a CO₂ extinguisher need testing?
It generally receives annual competent-person maintenance and a cylinder overhaul and pressure test at the applicable interval, commonly ten years. The service provider should confirm the due work from the particular cylinder and its records.
What if an extinguisher is damaged between services?
Do not wait for its next scheduled service. Report the defect, arrange a competent assessment and ensure suitable fire protection is available while the affected unit is out of use.
Does an annual service label guarantee an extinguisher will work for 12 months?
No. It records service work at a point in time. Routine checks remain necessary, and damage, discharge or a change in conditions must be addressed when discovered.
Resources & Further Guidance
