How Often Should Fire Extinguishers Be Checked?

Fire extinguishers are life safety equipment. To stay compliant, they need routine visual checks, regular servicing by a competent person and clear records showing they have been maintained properly.

The problem is: most workplaces only think about extinguishers once a year, when the engineer turns up.

This guide explains exactly what each interval involves, who is responsible, and how to stay compliant without over-complicating things.

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Your Legal Duty: What the Law Actually Requires

Two key documents shape fire extinguisher maintenance in UK workplaces:

Regulatory Reform (Fire Safety) Order 2005

The Responsible Person must ensure the premises are equipped with appropriate fire-fighting equipment and that equipment is subject to a suitable system of maintenance. Article 17 requires fire precautions to be maintained in an efficient state, in efficient working order and in good repair.

BS 5306-3

BS 5306-3 is the recognised British Standard for commissioning and maintaining portable fire extinguishers. It sets out the expected servicing approach, competence requirements and documentation standards used by fire engineers, auditors and insurers.

In practical terms, if you have extinguishers on site, you need a maintenance system that includes routine in-house checks, regular servicing by a competent person and clear records showing the equipment remains suitable and operational.

Is Annual Fire Extinguisher Servicing a Legal Requirement?

The Fire Safety Order does not name a specific 12-month servicing interval. It requires fire safety equipment to be maintained in an efficient state, in efficient working order and in good repair.

In practice, annual servicing is the recognised standard for portable fire extinguishers in UK workplaces. BAFE guidance states that a basic fire extinguisher service should be performed for all extinguishers at least annually.

Annual servicing by a competent person gives the Responsible Person evidence that extinguishers have been checked, maintained and documented in line with recognised British Standards and industry expectations.

If you have extinguishers on site, annual servicing is the practical route to demonstrating that your maintenance duties are being met.

At-a-Glance Servicing Schedule

A simple summary of how often each extinguisher needs attention:

Extinguisher Type	Monthly Check	Basic 12-Month Service	Extended Service	10-Year Overhaul
Water / Water Additive	✔	Every year	Every 5 years	–
Foam (AFFF)	✔	Every year	Every 5 years	–
Dry Powder (ABC / M28)	✔	Every year	Every 5 years	–
Dry Powder (Primary Sealed)	✔	Every year	–	Every 10 years
Wet Chemical	✔	Every year	Every 5 years	–
Clean Agent / Specialist Gas	✔	Every year	–	Every 10 years
CO₂	✔	Every year	–	Every 10 years (hydraulic test)
P50 / Composite “Service-Free”	Annual in-house visual check	Label update only	Not required	Replace at manufacturer’s lifespan

What Is the British Standard for Fire Extinguisher Servicing?

Several parts of BS 5306 apply to extinguishers:

• BS 5306-3 – Maintenance of portable fire extinguishers: Sets out required servicing intervals, technician competence and documentation.
• BS 5306-8 – Selection and positioning: Explains which extinguishers should be used where, how they should be sited and how provision should match the fire risks present.
• BS 5306-9 – Commissioning and recharge: Covers the correct process for commissioning new units and recharging discharged ones.

Together, these standards form the accepted benchmark for extinguisher safety in the UK – and are the documents fire engineers, auditors and insurers work from.

Fire Extinguisher Inspection Requirements in the UK

Fire extinguisher inspection is not one single activity. In most UK workplaces, it is split into routine visual checks, annual servicing and periodic extended servicing or overhaul.

• Monthly visual checks: usually completed in-house by the Responsible Person or a nominated competent person.
• Annual servicing: completed by a competent fire extinguisher technician.
• Extended servicing: completed at the required interval depending on extinguisher type.
• CO₂ pressure testing: carried out at the appropriate 10-year interval for CO₂ cylinders.

This layered approach helps demonstrate that extinguishers are visible, accessible, suitable, pressurised, undamaged, correctly recorded and maintained in line with recognised standards.

Monthly Visual Checks (Your Responsibility In-House)

BS 5306-3 requires monthly visual inspections carried out by the Responsible Person or anyone competent internally. You don’t need a fire engineer – just someone who knows what to look for.

Your monthly check should confirm:

1. The extinguisher is in the correct location

• On a wall bracket, stand or fire point
• Signage in place
• Visible, accessible and not used as a doorstop

(You’d be surprised how often this gets flagged.)

2. The extinguisher is intact and hasn’t been tampered with

Look for:

• Broken or missing safety pins
• Broken seals
• Damaged or loose handles
• Leaks, rust or corrosion
• Hose/horn cracks or blockages

3. The pressure gauge is in the green

Where applicable.

4. The extinguisher feels full

A quick lift test is acceptable for monthly checks.

5. Labels and instructions are readable

Faded, missing, or peeled labels are a service failure.

6. Powder extinguishers are free-flowing

Invert gently. If the powder is compacted, it will not discharge correctly.

7. You update the logbook

This is the one bit 90% of workplaces forget – and it’s the first thing auditors ask for.

Annual Basic Service (By a Competent Fire Extinguisher Technician)

Once every 12 months, extinguishers must receive a BS 5306-3 basic service carried out by a third-party accredited and competent engineer – typically BAFE SP101 registered.

This annual service includes:

• Full external inspection for corrosion, dents or mechanical damage
• Checking the extinguisher’s weight
• Checking internal pressure
• Inspection of the hose, horn and nozzle
• Verifying the correct location and suitability for the risk
• Checking the service pin, seal and headcap
• Replacing components if required
• Updating the service label and logbook

Good engineers also fix siting issues rather than just tagging what’s there.

Extended Fire Extinguisher Service (Every 5 Years)

Applies to: water, foam, dry powder and wet chemical extinguishers.

This is where a lot of businesses get caught out – because extended servicing isn’t just a “bigger version” of the annual check.

It involves:

• Fully discharging the extinguisher
• Inspecting the inside for corrosion, pitting, contamination or liner damage
• Replacing valves and O-rings
• Refilling and repressurising
• Carrying out a full functional test
• Re-applying service labels and documentation

If the extinguisher fails any part of this, it must be replaced.

Testing vs Servicing – What’s the Difference?

Businesses often use “check”, “test” and “service” interchangeably, but BS 5306 treats them very differently:

• Monthly checks – quick visual inspection by the Responsible Person.
• Annual service – maintenance carried out by a competent technician.
• Extended service (every 5 years) – a full functional test, including discharging and internally examining the extinguisher.
• CO₂ overhaul (every 10 years) – a hydraulic pressure test at an approved centre.

Understanding this difference helps ensure the right work is carried out at the right time – and avoids failed audits or invalid insurance claims.

CO₂ Extinguisher Overhaul (Every 10 Years)

CO₂ cylinders are high-pressure vessels and require a hydraulic test at an approved test centre every 10 years.

The engineer will:

• Remove the valve
• Send the cylinder for stretch-testing
• Replace the valve with a new approved unit
• Pressure test
• Inspect for damage
• Reassemble and certify

Very often, replacement is more economical than overhaul – but that depends on the unit and usage environment.

When Should You Replace a Fire Extinguisher Early?

Regardless of age, extinguishers should be replaced if:

• They fail an extended service or pressure test
• They are heavily corroded or dented
• The hose is perished or cracked
• Valves are damaged
• They have been discharged and are beyond economical refill
• The extinguisher type is no longer appropriate for the risk
• Manufacturer support/parts are discontinued
• You’re transitioning away from PFAS foam units

An extinguisher can technically last up to 20 years if maintained properly, but many industrial environments need replacements much sooner.

Documentation, Audits and Insurance

Fire risk assessors, insurers and enforcing authorities will expect to see:

• A current fire extinguisher logbook
• Monthly check records
• Evidence of annual services
• Proof of 5-year and 10-year extended servicing
• Correct siting and selection
• Up-to-date service labels
• No expired, damaged or missing extinguishers
• Matching extinguishers to risks (Class A/B/F, electrical, etc.)

Missed servicing doesn’t just risk enforcement action – insurers may challenge claims where life-saving equipment wasn’t maintained.

Rules for Fire Extinguishers in the UK (Simple Overview)

For workplaces, the core rules can be summarised as:

• The Responsible Person must provide adequate fire-fighting equipment (RRO 2005).
• Extinguishers must be suitable for the risk (BS 5306-8).
• They must be commissioned before use (BS 5306-9).
• They must receive monthly in-house checks (BS 5306-3).
• They must receive annual servicing (BS 5306-3).
• They must undergo 5-year or 10-year testing, depending on type.
• All checks and services must be recorded in a fire logbook.
• Extinguishers must be accessible, visible and correctly sited with the right signage.

This is what auditors, insurers and fire risk assessors will measure compliance against.

FAQs

Got specific questions about extinguisher checks and servicing? These quick answers cover the issues UK workplaces ask most often – from legal duties to lifespan, testing intervals and replacement rules.

Is it a legal requirement to have fire extinguishers checked annually?

Yes. The RRO requires equipment to be “maintained”, and BS 5306-3 is the recognised British Standard used to define the expected maintenance approach, including regular servicing by a competent person. This is what enforcement bodies and insurers expect.

Will a 20-year-old fire extinguisher still work?

Possibly, but age alone is not enough to prove it is safe or compliant. A very old extinguisher would need to have a clear service history, pass the required checks and remain suitable for the risk. In many cases, replacement is more practical than continued servicing, especially where the cylinder is corroded, parts are unavailable or documentation is incomplete.

Do fire extinguishers need to be checked every 60 days?

No. In the UK, monthly visual checks are sufficient.

The 60-day interval appears in some US-based NFPA guidance, not British Standards.

Do fire extinguishers need to be tested annually?

Not “tested”, but serviced annually.

The only formal “tests” are:

• 5-year discharge & internal inspection
• 10-year CO₂ hydraulic test

How often should fire extinguishers undergo a maintenance test?

Portable fire extinguishers should receive a basic service at least annually by a competent person. Depending on the extinguisher type, an extended service or overhaul may also be required at the appropriate 5-year or 10-year interval.

What should be done every month to a fire extinguisher?

A monthly visual check should confirm that the extinguisher is in the right place, visible, accessible, undamaged, correctly labelled, showing the correct pressure where applicable, and recorded in the fire logbook.

How long is a fire extinguisher inspection valid for?

A professional basic service is normally valid for 12 months, provided the extinguisher is not damaged, discharged, tampered with or affected by a change in risk. Monthly visual checks should continue between annual services.

How often should an outdoor fire extinguisher be checked?

Outdoor extinguishers should still be visually checked at least monthly, but harsh environments may justify more frequent checks. Weather exposure, corrosion, vandalism, freezing risk and cabinet condition should all be considered.

How often should fire extinguishers be checked according to HSE?

HSE follows the same principle as the RRO: extinguishers must be maintained and remain in good working order. In practice, this means monthly checks + annual servicing in line with BS 5306-3.

Will the fire department give me a free fire extinguisher?

No. UK fire services do not supply free extinguishers. Businesses and landlords must purchase and maintain their own equipment.

When should extinguishers be replaced instead of tested?

Replace when:

• They fail a discharge or pressure test
• They’re corroded or dented
• Valves or hoses are damaged
• They’re no longer suitable for the risk
• Manufacturer support or parts are discontinued
• The extinguisher reaches end-of-life guidance or fails documentation checks