Fire alarm maintenance contracts explained: What the law actually requires, what BS 5839-1:2025 recommends, how much you should expect to pay and what you’re really getting for your money.
Your fire alarm appears to be working perfectly well. Every Friday, somebody presses a manual call point, the sounders make an almighty racket, the panel flashes and everybody carries on with their day. So why are you paying a contractor £300, £500 or perhaps £1,000 a year to maintain something that seems to be working?
It’s a reasonable question, particularly when you’ve already spent thousands of pounds having the system installed.
But consider a slightly different situation. It’s 2am on a Sunday morning, your fire alarm develops a fault and part of the building’s smoke detection system stops working. Perhaps it’s an office that’s empty over the weekend, a hotel with guests sleeping upstairs or a warehouse where the fire alarm is connected to other safety equipment.
Who are you going to telephone? Will somebody answer? How quickly can an engineer attend, and will they understand your particular system? More importantly, will they have the replacement parts needed to put things right, or will your building be left with impaired fire protection while somebody orders a component that won’t arrive until Tuesday?
This is where the real value of a properly structured fire alarm maintenance contract becomes apparent. You’re not simply paying for two service visits a year. You’re paying for the knowledge, equipment, preventative maintenance, technical support and emergency arrangements needed to keep a critical life safety system operating.
But not all fire alarm maintenance contracts offer the same level of service, and the cheapest quotation isn’t necessarily the best value. Some include little more than scheduled inspections, while others provide emergency attendance arrangements, specialist technical support and access to replacement components.
So what does the law actually require, what should your contractor be doing, and how much is a reasonable amount to pay?
Is a Fire Alarm Maintenance Contract a Legal Requirement?
Let’s start by clearing up one of the biggest misunderstandings. There is no universal legal requirement for every business to have a signed annual fire alarm maintenance contract. There is, however, a legal requirement to ensure that necessary fire safety equipment is properly maintained.
In England and Wales, the Regulatory Reform (Fire Safety) Order 2005 places duties on the Responsible Person to ensure that appropriate fire safety arrangements are provided and maintained.
Article 13 deals with suitable fire detection and warning arrangements where necessary, while Article 17 requires relevant fire safety equipment to be subject to a suitable maintenance system and kept in efficient working order and good repair.
Article 9 also requires a suitable and sufficient fire risk assessment, which should consider whether the fire detection and warning arrangements are appropriate for the premises and the people using them.
In practical terms, if your building needs a fire alarm system, you need to make sure it continues to provide the protection required. It isn’t enough to have a commissioning certificate from five years ago and assume everything is still working as intended.
The legislation doesn’t specifically say you must sign an annual contract with a fire alarm company. You could arrange individual servicing visits and organise repairs separately, provided the overall arrangements remain suitable and effective.
But who makes sure those visits happen on time? Who keeps the records, investigates recurring faults and arranges an engineer when something goes wrong outside normal working hours?
For most commercial premises, a maintenance contract is the most practical way of managing these responsibilities. It provides a structured programme of inspections, access to competent technicians and arrangements for dealing with unexpected problems.
Importantly, appointing a contractor doesn’t transfer your legal duties to them. The Responsible Person must still ensure that suitable maintenance arrangements are in place and that significant defects are addressed.
What Does BS 5839-1:2025 Say About Fire Alarm Maintenance?
BS 5839-1:2025 is the current British Standard code of practice for the design, installation, commissioning and maintenance of fire detection and alarm systems in non-domestic premises. It came into effect in April 2025, replacing the 2017 edition.
Although a British Standard isn’t automatically legislation, BS 5839-1 provides a widely recognised benchmark for the management and maintenance of commercial fire alarm systems.
Its recommendations may also be relevant to insurance arrangements, contracts and the assessment of suitable fire safety precautions.
The standard covers considerably more than the number of detectors fitted to a ceiling. It addresses routine user testing, professional inspections, annual functional testing, maintenance records, emergency repair arrangements and the responsibilities of the people managing the premises.
It also distinguishes between routine servicing and assessing whether the original system design is suitable.
A six-monthly service doesn’t automatically mean the contractor has undertaken a complete design review or confirmed that every aspect of the installation meets the latest edition of BS 5839-1.
If there are concerns about detector coverage, alarm audibility, system category or the original design, a separate technical assessment or validation may be necessary.
That’s an important distinction, particularly when taking over an older building where the original fire alarm design documentation is missing.
How Many Times a Year Should a Fire Alarm Be Serviced?
For most commercial fire alarm systems, the recommendation is a minimum of two professional service visits each year.
Clause 43.2.1 of BS 5839-1:2025 recommends that inspection and servicing take place at approximately six-monthly intervals. The 2025 edition recognises that an individual service can take place between five and seven months after the previous visit, allowing some flexibility for scheduling.
That doesn’t mean contractors can routinely stretch the interval to seven months. The intention remains a six-monthly servicing programme, with the system’s acceptance date providing the reference point for the schedule.
Some larger or more complicated buildings may benefit from quarterly servicing. A substantial networked system with several hundred devices, complex interfaces and restricted access arrangements will require more engineering time than a small conventional installation protecting a shop.
However, four visits aren’t automatically required simply because a contractor offers quarterly maintenance. The appropriate programme should take account of the system’s size, complexity, accessibility, manufacturer’s recommendations and the circumstances of the premises.
For many businesses, two properly planned visits are sufficient to complete the relevant periodic and annual maintenance programme.
What Percentage of the Fire Alarm Must Be Tested at Each Visit?
This is worth asking your existing maintenance contractor, because there’s a difference between visiting a building twice a year and demonstrating that the necessary testing has actually been completed.
Under Clause 43.3 of BS 5839-1:2025, the annual servicing programme includes appropriate functional testing of every automatic fire detector, every manual call point mechanism and the operation of all fire alarm warning devices.
In practical terms, 100% of the relevant devices should receive their applicable annual tests. The contractor shouldn’t simply select a convenient handful of detectors each year and leave the remainder untested.
That doesn’t mean every device needs its full annual functional test during both six-monthly visits. The testing can be distributed across the year, provided the applicable annual programme is completed.
Consider an office building containing 100 detectors, 20 manual call points and 40 sounders or visual alarm devices. That’s 160 devices. A contractor might organise the work so that approximately half receive their scheduled annual tests during the first visit and the remainder during the second.
However, BS 5839-1 doesn’t prescribe a fixed 50% split. Certain inspections and functional checks are needed at every periodic service, regardless of how the annual testing is divided.
The standard also recognises different testing methods for different types of detectors. A smoke detector needs to be tested appropriately, rather than simply checking that the control panel can simulate an alarm. Heat detectors, multisensor devices, beam detectors and aspirating systems have their own testing considerations.
This becomes particularly important with multisensor detectors, where more than one sensing element may contribute to the decision to generate a fire alarm. The method of testing needs to reflect the particular detector and system capabilities.
Your contractor should maintain sufficient records to demonstrate which devices have been tested and whether the annual programme has been completed.
If the service report simply says “fire alarm tested” without adequately identifying the work undertaken, it’s reasonable to ask for more information.
What Should Actually Happen During a Fire Alarm Service?
A professional service involves considerably more than operating a detector and checking that the control panel makes a noise.
The engineer should review the existing maintenance records, investigate outstanding faults and examine the relevant system equipment. The inspection and testing programme should include the control panel, detectors, manual call points, sounders, visual alarm devices, power supplies and standby batteries, as appropriate.
The engineer should also consider readily apparent changes that may affect the system. A new partition might obstruct detection, high-level storage could affect detector coverage, or a room may have been converted to a use for which the existing detector is unsuitable.
Some changes are relatively straightforward to identify during routine servicing. Others may require a separate review of the original design, fire strategy or fire risk assessment.
One area that deserves particular attention is the equipment connected to the fire alarm.
Many commercial systems operate magnetic fire door holders, access control systems, mechanical ventilation, lift interfaces or smoke control equipment. A restaurant, for example, might have an arrangement requiring its extraction system to shut down when the fire alarm operates.
The fire alarm could activate correctly while one of those essential interfaces fails.
Appropriate cause-and-effect testing is therefore important, although there’s a distinction between the minimum annual testing recommended by BS 5839-1 and a complete test of every possible cause-and-effect combination.
Clause 43.3.21 recommends testing appropriate representative causes and their associated effects. Where different initiating device types are present, the relevant checks should reflect those types. The standard doesn’t automatically require every possible sequence to be tested during routine annual servicing.
For a complicated installation with smoke control, phased evacuation or numerous interfaced systems, the building manager may wish to specify more extensive cause-and-effect testing within the maintenance agreement.
That additional scope should be agreed in advance.
The same applies to specialist connected equipment. Testing a fire alarm interface doesn’t necessarily constitute full maintenance of the lift, smoke ventilation system or other equipment connected to it.
A good contract should explain exactly what’s included.
Can My Own Staff Service the Fire Alarm?
It’s perfectly reasonable for businesses to use their own staff to undertake routine fire alarm testing. In fact, BS 5839-1:2025 recommends weekly testing, which can be carried out by a suitably instructed member of staff.
This normally involves operating a different manual call point each week, checking that the system responds correctly and recording the results in the fire alarm logbook. Where the alarm is connected to an Alarm Receiving Centre, the monitoring centre should be contacted before and after testing in accordance with the agreed procedures.
Staff should also know how to recognise and report fault indications on the control panel. These routine checks form part of the building’s day-to-day fire safety management.
However, there’s an important distinction between testing a fire alarm and maintaining one.
Professional servicing, fault diagnosis and repairs require somebody with the appropriate knowledge, practical experience, qualifications and equipment.
Your receptionist, caretaker or general maintenance team shouldn’t be opening control panels, replacing detectors, disconnecting circuits, changing standby batteries or altering the system’s programming unless they are specifically competent and authorised to undertake that particular work.
The same applies to wireless detector batteries, which must be replaced in accordance with the manufacturer’s instructions. The fact that a component contains a battery doesn’t automatically make it user-serviceable.
An organisation can employ its own qualified fire alarm technician, but general building maintenance experience alone doesn’t establish the competence needed to maintain a life safety system.
There are also potential legal consequences when people interfere with fire alarm equipment. Section 8 of the Health and Safety at Work etc. Act 1974 prohibits intentional or reckless interference with, or misuse of, equipment provided for safety under the relevant statutory provisions.
The Regulatory Reform (Fire Safety) Order 2005 also creates offences where failures to comply with applicable fire safety duties place people at risk of death or serious injury in the event of fire.
Disabling a troublesome smoke detector, disconnecting a sounder or bypassing a fault simply because it’s inconvenient could therefore have serious legal consequences, depending on the circumstances.
Of course, there are legitimate occasions when a competent engineer needs to isolate part of a system for testing or repairs. That work should be properly controlled and documented, with appropriate temporary fire safety precautions where necessary.
The distinction is straightforward: staff can undertake routine user testing, but technical maintenance should be entrusted to people who can demonstrate the competence to carry it out safely.
What Happens When Your Fire Alarm Breaks Down at 2am?
This is one of the most important considerations when choosing a maintenance provider.
Under Clause 44.2.1 of BS 5839-1:2025, where maintenance is undertaken by a third-party organisation, the standard recommends an emergency call-out agreement providing 24-hour availability.
The arrangement should normally allow a technician to attend the premises within eight hours of receiving a call. The standard recognises that this may not always be achievable in particularly remote locations, in which case the variation should be recorded.
But there’s an important distinction between arriving within eight hours and repairing the fault within eight hours.
The recommendation concerns attendance, not a guarantee that every fault will be completely repaired within that period.
An engineer might attend, replace a defective detector and restore the system immediately. Alternatively, they may discover a failed control panel component that needs specialist replacement parts.
Where a defect cannot be rectified during the visit, it should be recorded, the Responsible Person informed and arrangements made for repair as soon as possible.
The standard also recommends that unresolved fault indications shouldn’t simply be concealed or suppressed to make the system appear healthy.
This is where the response arrangements become particularly important. A serious loss of fire detection in sleeping accommodation could require urgent temporary measures, while a minor defect that doesn’t affect essential system operation may have less significant implications.
Ask your maintenance contractor how out-of-hours calls are handled, whether a technician will actually be available and what charges apply. Some agreements cover scheduled servicing only, with emergency attendance charged separately. Others provide enhanced response arrangements or include certain call-out costs.
Neither structure is necessarily wrong, but you should understand exactly what you’re buying.
Why Does It Matter Whether the Contractor Carries Spare Parts?
Imagine your fire alarm develops a fault on Friday afternoon.
A contractor who has never worked on the system arrives, identifies a defective detector and discovers they don’t have a replacement. The part needs ordering, but it won’t arrive until Monday. Another visit is then required, leaving part of the system impaired in the meantime.
Now consider the same situation with an established maintenance contractor.
They know your installation, have access to the service history and understand which components are compatible. Their engineer arrives with commonly required replacement detectors, batteries and other components already available.
The defective equipment is replaced and tested during the first attendance, potentially reducing the period of impaired protection from several days to a matter of hours.
That’s a significant practical advantage of having an effective maintenance agreement.
A professional contractor should have suitable arrangements for obtaining replacement parts promptly. For commonly encountered systems, it’s reasonable to expect engineers to carry frequently required components in their vehicles or have rapid access to local stock.
For specialist addressable installations, the situation can be more complicated. Some manufacturers use proprietary components or require specialist programming tools, which makes having the right supplier relationships and technical support particularly important.
Not every engineer can realistically carry every replacement circuit board or control panel. However, a contractor should be able to explain how they obtain critical components and what happens when a particular part becomes unavailable.
BAFE SP203-1 also addresses this issue. Its maintenance scheme requires certificated organisations to demonstrate access to adequate spare parts so they can repair the systems for which they’re responsible and meet contractual repair commitments.
Where parts are unavailable, including because equipment has become obsolete, the scheme requires the customer to be informed in writing.
For larger buildings or critical installations, maintaining selected spare components on site may be a sensible precaution.
An experienced contractor should also be able to advise when older equipment is becoming difficult to support. A system installed fifteen years ago isn’t necessarily unsafe, but a discontinued panel for which replacement components cannot be obtained promptly presents an obvious maintenance risk.
The practical advantage of a good maintenance contractor isn’t simply that somebody turns up. It’s that they have a better chance of restoring the system quickly, reducing the time occupants are left without the intended fire protection.
Conventional, Addressable or Wireless: Does the Type of Fire Alarm Affect Maintenance?
Very much so.
Conventional fire alarms normally identify an alarm or fault by zone rather than by individual device. For a small shop, café or office, that may be perfectly suitable. Replacement components for common systems can be readily available, although locating faults on circuits serving several devices can sometimes take additional investigation.
Addressable systems identify individual detectors, call points and other devices. Instead of reporting a fault somewhere in Zone 3, the panel might identify a particular smoke detector in the first-floor electrical intake.
Modern addressable systems may also provide detailed event histories, detector contamination information and diagnostic facilities that help identify developing faults.
These features can make maintenance and fault-finding more efficient, but they also introduce additional technical complexity.
Some systems require manufacturer-specific programming software, configuration tools and specialist training. Certain equipment is proprietary, which can limit the number of contractors who can undertake particular repairs.
Before changing maintenance provider, it’s worth establishing whether the new contractor can genuinely diagnose, programme and repair the equipment, rather than simply undertake routine detector testing.
Wireless systems offer different advantages, particularly in listed buildings, heritage properties and occupied premises where installing cables would be disruptive.
However, they introduce ongoing requirements for battery replacement and radio communication testing.
There isn’t a single fire alarm system type that’s automatically cheapest to maintain in every situation. The number of devices, type of equipment, accessibility, manufacturer’s support and complexity of the installation all affect the cost.
Are Wireless Fire Alarm Batteries Included in the Maintenance Contract?
This is one of the questions worth asking before buying a wireless fire alarm, let alone signing a maintenance agreement.
Wireless detectors, call points, sounders and interface units may rely on batteries for normal operation. Those batteries have a finite life and eventually require replacement.
Some manufacturers specify expected battery lives of several years, but actual performance depends on the equipment, operating conditions and usage.
For a building with a hundred wireless devices, a planned battery replacement programme can represent a significant additional expense.
Some products use specialist battery packs, while others require particular manufacturer-specified batteries. Replacement should follow the manufacturer’s instructions, and suitable checks may be necessary to confirm that the device continues to operate and communicate correctly.
BS 5839-1:2025 also recommends annual checks of radio signal strengths, with the results recorded. This matters because alterations to a building, new metal racking, machinery or partitions can affect wireless communication.
Before appointing a maintenance contractor, ask whether wireless battery replacement is included in the price, how frequently batteries are expected to need changing and what the replacement programme will cost.
Wireless equipment can save considerable disruption during installation, but its ongoing ownership costs shouldn’t be overlooked.
What About Remote Fire Alarm Monitoring?
Remote monitoring can be extremely useful, particularly for buildings that aren’t occupied around the clock.
However, it’s important to distinguish between monitoring by an Alarm Receiving Centre and remote technical diagnostics.
An Alarm Receiving Centre, commonly known as an ARC, receives signals transmitted from a monitored fire alarm system. Depending on the equipment and agreement, these may include fire signals, fault indications and communication failures.
If an alarm activates at an unoccupied warehouse overnight, the ARC can follow an agreed response procedure, which might involve contacting nominated keyholders or escalating the incident.
However, a monitored fire alarm doesn’t automatically guarantee attendance by the fire and rescue service. Attendance policies vary, and the monitoring company should explain what action it takes when signals are received.
Remote diagnostics are slightly different.
Some modern addressable systems allow an authorised maintenance engineer to access diagnostic information remotely. They may be able to examine the event history, identify potential equipment faults or review device conditions without immediately attending site.
This can make a considerable difference to repair times. If the engineer knows which component is likely to be defective before leaving the workshop, they may be able to bring the appropriate replacement and complete the repair during the first visit.
Remote access needs to be appropriately secured, with suitable authentication and controls. BS 5839-1:2025 specifically addresses remote services and cybersecurity.
It’s also important to understand that remote diagnostics don’t replace the physical inspection and functional testing recommended by the standard.
A remote connection cannot demonstrate that smoke can enter a detector chamber or that a sounder operates correctly in the building.
Remote monitoring should therefore be considered a useful addition to an appropriate maintenance programme, not a substitute for it.
Do Fire Alarm Panels Need Software and Firmware Updates?
Modern addressable fire alarm systems often rely on sophisticated software to manage detection, fault monitoring, event recording and the operation of connected equipment.
Manufacturers may release firmware or software updates to correct faults, improve compatibility or address security issues.
However, updating a fire alarm system isn’t the same as updating a mobile phone. Changes to safety-critical equipment need to be carefully controlled because they may affect the operation of detectors, warning devices or other interfaced systems.
BS 5839-1:2025 treats relevant software and firmware changes as modifications, with appropriate testing and documentation required. The Fire Industry Association’s guidance also clarifies that updating control panel firmware is a modification for which an appropriate certificate should be produced.
Ask whether your maintenance contractor monitors manufacturer technical notices, has access to the necessary programming tools and can undertake authorised updates.
You should also establish whether additional programming, testing and certification are included in the agreement or charged separately.
An important consideration, particularly for proprietary addressable systems, is what happens if you change maintenance providers. Are the configuration records available, and can another competent contractor support the installation?
Does a Fire Alarm Maintenance Contractor Legally Need BAFE or LPCB Certification?
This is an area where there’s considerable misunderstanding.
There is no universal legal requirement under the Regulatory Reform (Fire Safety) Order 2005 for every fire alarm maintenance contractor to hold BAFE or LPCB certification.
There is, however, a clear expectation that those undertaking the work are competent for the tasks involved.
Third-party certification provides useful independent evidence of organisational competence, but it isn’t the only way that competence can be demonstrated.
What Does BAFE Certification Actually Mean?
BAFE SP203-1 is an industry-specific third-party certification scheme covering fire detection and alarm system design, installation, commissioning and maintenance.
It is useful to think of the certification process as having similarities to an ISO-style quality management assessment.
Like ISO 9001 certification, it involves independent auditing of an organisation’s management systems, processes and records. However, BAFE SP203-1 is not the same as ISO 9001. It is a specialist scheme that also assesses the technical resources and competence needed to deliver particular fire alarm services.
The assessment includes matters such as management procedures, quality control, record keeping, technical supervision, personnel competence and the organisation’s ability to undertake the activities for which it seeks certification.
Certification is undertaken by appropriately accredited independent certification bodies, with ongoing surveillance to verify that the organisation continues to meet the scheme requirements.
BAFE SP203-1 is modular, meaning a business may hold certification for design, installation, commissioning or maintenance, rather than necessarily holding every module.
It’s therefore worth checking the scope of the contractor’s registration. A company certificated for installation isn’t automatically certificated for maintenance.
Why Do Larger Contracts Often Require BAFE?
For organisations responsible for extensive property portfolios, independent certification provides a practical way of assessing prospective contractors.
An NHS trust, local authority, university or major facilities management company might be responsible for dozens or hundreds of buildings. It needs confidence that the appointed maintenance company has appropriate procedures, technical resources and management arrangements.
Rather than investigating every aspect of a contractor’s organisation independently, the client may specify BAFE SP203-1, LPCB certification or an appropriate equivalent as part of its tender requirements.
Where this is stipulated, certification becomes a contractual condition of appointment.
That’s different from a universal legal requirement applying to every commercial property.
Smaller businesses may appoint competent contractors without BAFE or LPCB certification, provided they can demonstrate suitable competence and meet any applicable insurance or contractual conditions.
How Can You Check Whether the Individual Engineer Is Competent?
BAFE certification provides assurance about the organisation’s systems and technical arrangements. It doesn’t mean that every engineer employed by the company automatically holds a particular qualification.
One recognised way of demonstrating an individual engineer’s technical knowledge is through relevant Level 3 qualifications in fire detection and alarm systems.
Under BAFE SP203-1, nominated lead individuals, including lead maintenance engineers, are required to hold a suitable regulated Level 3 qualification or higher, covering the relevant aspects of fire detection and alarm systems to BS 5839-1.
Other engineers working under the scheme must be competent for the work allocated to them and appropriately supervised where necessary.
Qualifications from organisations such as FireQual and EAL can provide evidence of the knowledge required, provided the particular qualification covers the relevant fire alarm activities.
However, qualifications shouldn’t be considered in isolation.
An engineer may understand BS 5839-1 thoroughly but have limited experience with a particular manufacturer’s addressable equipment. They may need additional specialist training, programming software or manufacturer support before carrying out certain repairs.
Equally, a technician with many years of practical fire alarm experience may have substantial knowledge of particular installations, even if the company employing them doesn’t hold a specific third-party certification.
Competence involves a combination of relevant qualifications, practical experience, technical knowledge, training and the ability to carry out the work safely and correctly.
When selecting a maintenance company, ask about the qualifications and experience of the engineers who will actually attend your premises.
It’s also worth considering their access to specialist tools, technical support and replacement parts. A well-qualified engineer who cannot obtain the components or programming equipment required to repair your system may still be unable to restore it promptly.
What Insurance Should a Fire Alarm Maintenance Contractor Have?
Insurance is another important consideration when appointing a fire alarm maintenance company.
Contractors are working on safety-critical equipment, and mistakes can potentially have serious consequences.
Appropriate public liability insurance addresses relevant claims involving third-party injury or property damage arising from the contractor’s activities.
Professional indemnity insurance is particularly relevant where the company undertakes design, provides technical advice, prepares specifications, modifies programming or performs other professional services.
Employers’ liability insurance is generally a legal requirement for businesses employing staff, subject to statutory exceptions.
There isn’t a universal statutory requirement for every fire alarm contractor to hold a particular level of public liability or professional indemnity insurance. However, the cover should be appropriate for the work being undertaken, the premises and the potential consequences of an error.
Larger contracts may specify minimum insurance limits, sometimes running into several million pounds.
Before appointing a contractor, it’s sensible to request evidence of current insurance and establish that the policies cover the activities being undertaken.
Insurance isn’t proof of technical competence, but appropriate cover is an important part of operating a professional fire safety business.
Must the Contractor Use LPCB-Approved Replacement Parts?
Not universally. There’s an important distinction between product conformity, third-party approval and compatibility with an existing fire alarm system.
LPCB, the Loss Prevention Certification Board, operates independent certification schemes for fire safety products and services. Relevant products may be listed in its Red Book.
Fire alarm equipment may also need to conform to appropriate standards within the BS EN 54 series and applicable product legislation.
However, there isn’t a blanket legal requirement for every replacement component in every commercial fire alarm to be LPCB-approved.
The important consideration is that the equipment is suitable, appropriately specified and compatible with the installation.
This is particularly relevant to addressable fire alarm systems. A smoke detector from one manufacturer cannot simply be substituted with another manufacturer’s device because it looks similar or fits the same ceiling position.
The replacement needs to communicate correctly with the control equipment, be compatible with the relevant protocol and operate as intended.
Where an installation is subject to a specific certification scheme, insurer condition or contractual approval requirement, replacement components and modifications may need to preserve those arrangements.
A competent contractor should understand these requirements and use appropriately approved or otherwise suitable products.
A cheaper replacement component isn’t much of a saving if it compromises reliability, compatibility or the installation’s certification status.
Can Fire Alarm Faults Affect Your Fire Risk Assessment?
Absolutely, and this is where fire alarm maintenance and fire risk assessment become closely connected.
A fire risk assessment considers the precautions required to protect people using a building. Those precautions include the adequacy and reliability of the fire detection and warning arrangements.
Not every fault has the same significance.
A relatively minor equipment defect that doesn’t affect the essential operation of the system may have limited implications for the overall risk.
But losing an entire detection circuit, discovering that an important escape route isn’t adequately protected or finding that a critical alarm interface no longer operates could have much more serious consequences.
Consider a small office where the fire alarm has developed a minor fault but continues to provide the intended detection and warning functions.
Now compare that with a hotel where a fault has disabled smoke detectors serving guest accommodation.
The implications are clearly different, and the response needs to reflect the risk.
Under Article 9 of the Fire Safety Order, a fire risk assessment must be kept under review and revised where necessary, particularly where there is reason to suspect it is no longer valid.
A significant loss of fire alarm protection may require that assessment to be reviewed and appropriate temporary precautions introduced.
That doesn’t mean every minor fault requires a completely new fire risk assessment. However, significant impairments should be considered promptly, with suitable action taken to protect occupants until repairs are completed.
Depending on the circumstances, temporary measures could include additional supervision, alternative warning arrangements, restrictions on occupancy or changes to how affected areas are used.
Repeated false alarms are also worth investigating. A system that activates unnecessarily every few days can undermine occupants’ confidence in the warning signal, making them less responsive when there is a genuine fire.
BS 5839-1 includes recommendations for investigating unwanted fire alarm signals, and your contractor should be able to assist with identifying potential causes.
A serious defect affecting life safety shouldn’t simply remain on a list of outstanding maintenance items until the next scheduled service. Its priority should reflect the actual risk to people using the building.
Is BS 5839-1:2025 Retrospective? Must Older Systems Be Upgraded?
The publication of a revised British Standard doesn’t automatically mean that every existing fire alarm installation must be upgraded to comply with every new recommendation.
A system installed correctly under an earlier edition may remain suitable for the building and its intended use.
However, that doesn’t mean older systems are permanently exempt from improvement.
The 2025 edition introduced or clarified recommendations covering various aspects of fire detection and alarm systems, including detector selection in sleeping accommodation, manual call points, zone plans, documentation and maintenance arrangements.
Some new recommendations are expressly not intended to be applied retrospectively to existing installations.
For example, the revised guidance concerning heat detectors in sleeping accommodation doesn’t automatically require every existing hotel or residential building to replace those detectors solely because the standard has changed.
Nevertheless, a fire risk assessment might identify circumstances where a change is appropriate or necessary.
The building may have been extended, subdivided or changed in use. Occupancy levels might have increased, or the original fire strategy may no longer reflect how the premises operate.
In these circumstances, the existing fire alarm may no longer provide suitable protection, regardless of whether it complied with the standard when first installed.
What Happens When a New Maintenance Contractor Takes Over?
This is particularly relevant when an existing maintenance agreement ends and a new company is appointed.
Clause 44.1 of BS 5839-1:2025 recommends that a new servicing organisation inspects the existing system and reviews available records to obtain the information necessary for future maintenance.
Major areas of non-conformity should be documented and brought to the attention of the premises management.
These may relate to matters such as insufficient manual call points, detector coverage, alarm audibility, standby power arrangements, circuit monitoring or inadequate zone plans.
However, identifying a non-conformity doesn’t automatically establish that the entire installation must be upgraded immediately.
The significance of the issue, the risks associated with the building and any relevant statutory, insurance or contractual requirements need to be considered.
Some differences may be acceptable documented variations, while others represent deficiencies that require remedial action.
What If You Extend or Modify an Older Fire Alarm?
BS 5839-1:2025 includes a dedicated section dealing with extensions and modifications.
Where an existing system is extended, the new work should follow the current applicable recommendations, even where parts of the original installation don’t fully conform to the latest edition.
That doesn’t necessarily mean every older detector or circuit in the building must be replaced.
However, the completed installation needs to remain suitable, and changes should be properly designed, tested, documented and certificated as appropriate.
A competent contractor should distinguish between a genuine safety deficiency, a difference from the current standard and an improvement that may be desirable but isn’t automatically compulsory.
The important question isn’t simply whether an older installation meets every recommendation published in 2025. It’s whether the system remains suitable for the building, its occupants and the fire risks that exist today.
How Much Should a Fire Alarm Maintenance Contract Cost?
Let’s talk about money, because there can be substantial differences between quotations.
For a small commercial installation, such as a shop, café or modest office, an annual routine servicing agreement involving two visits might cost approximately £200–£400 plus VAT.
For a medium-sized installation, a reasonable budgeting range could be around £400–£900 plus VAT, while larger addressable systems, complex installations and multi-building networks can cost considerably more.
These are illustrative UK market figures, not fixed prices or an established national average. Actual quotations depend on the number of devices, the complexity of the system, access arrangements, location and the scope of the maintenance agreement.
As one indication of how much prices vary, a UK contractor’s published review of 52 maintenance contracts during the twelve months to September 2026 reported a median annual price of £304 excluding VAT. Its individual contracts ranged from a small installation costing £150 to a large industrial site costing more than £3,000 annually.
Those figures relate to that contractor’s customer base, rather than the entire UK market, but they illustrate why there’s no single correct price for fire alarm servicing.
The annual servicing fee is only part of the picture.
A basic maintenance agreement might cover scheduled inspections while charging separately for emergency call-outs, replacement parts, batteries, specialist access equipment and additional programming.
A more comprehensive agreement may include certain call-out arrangements, enhanced response times or replacement components.
Wireless battery replacement, ARC monitoring and specialist software work are also worth checking.
This is why comparing contracts purely on their annual price can be misleading.
Imagine one contractor quotes £280 a year for two service visits, while another quotes £450 but provides better access to emergency technical support and keeps commonly required parts readily available.
The cheaper contract might represent perfectly reasonable value if the business understands its limitations and has suitable arrangements for dealing with faults.
But if a breakdown results in additional call-out charges, several days of impaired fire protection and multiple return visits, the apparent saving can quickly disappear.
The most useful comparison is the overall service being provided, including what happens when something goes wrong.
What Should You Check Before Signing a Maintenance Contract?
Before signing, it’s worth asking a few questions beyond the annual price.
Start with the servicing programme. How many visits are included, how will the contractor complete the relevant annual testing and what records will be provided? Will the report identify which devices have been tested and any outstanding defects?
Ask about emergency response. Is there genuine 24-hour call-out availability, can a technician normally attend within eight hours and how are out-of-hours charges calculated?
Find out whether the contractor carries commonly required replacement components, has access to specialist manufacturer stock and can undertake programming and repairs on your particular system.
For wireless systems, establish whether battery replacement and radio signal testing are included. For addressable systems, ask about software support, configuration records and manufacturer-specific programming tools.
You should also establish what qualifications, training, experience and third-party certification the company and its engineers can demonstrate.
BAFE or LPCB certification can provide useful independent organisational assurance, while relevant Level 3 qualifications, manufacturer training and practical experience help demonstrate individual competence.
Neither should be considered in isolation.
Finally, ask how serious faults, non-conformities and potential fire risk assessment implications will be communicated. A good maintenance provider shouldn’t simply identify a defect and leave the customer wondering what it means.
They should explain what’s wrong, the likely implications and what action is recommended.
A contractor who can answer these questions clearly is providing more useful reassurance than somebody who simply offers the cheapest annual price.
So, Is a Fire Alarm Maintenance Contract Worth the Money?
A fire alarm is one of those systems that most people rarely think about until something goes wrong.
It might sit quietly in the corner of a building for years, with little more than the occasional weekly test and a reassuring green light showing that the panel has power.
But the system may provide the first warning that allows somebody to escape from a developing fire. It might release fire doors, operate smoke ventilation or alert occupants in another part of the building.
And you may have no idea that one of those functions has stopped working until somebody tests it.
Suitable maintenance provides more than scheduled inspections. It gives you access to competent technicians, appropriate testing equipment, proper records, fault investigation and arrangements for dealing with unexpected problems.
A contractor who understands the installation and carries suitable replacement parts may be able to restore protection much sooner than somebody who needs to identify the equipment, order components and return several days later.
For a small business, a few hundred pounds a year might feel like another unwelcome overhead. But when considered against the cost of the installation, the potential disruption of a serious fault and the importance of protecting people, proper maintenance is a necessary part of managing the premises.
The important thing is to understand what you’re paying for and make sure the agreement provides the support your building needs.
Because the real test of a fire alarm maintenance contract isn’t whether somebody visits twice a year. It’s whether the system is properly maintained and how effectively problems are dealt with when something goes wrong.
And when your fire alarm fails at 2am, you’ll be glad you asked those questions before signing.
Fire Alarm Consultancy and Compliance Advice from ESI Fire Safety
At ESI: Fire Safety, we help business owners, landlords, facilities managers and managing agents understand their fire alarm systems and the responsibilities that come with them.
Our work includes fire risk assessments, fire alarm design, commissioning and validation, together with independent consultancy on existing system defects, maintenance arrangements and compliance with BS 5839-1:2025.
We work with commercial properties throughout Surrey, Hampshire, Berkshire, South West London and the wider South East.
Whether you’re reviewing an existing fire alarm maintenance agreement, considering an upgrade to an older installation or trying to understand the significance of outstanding defects, we can help establish what needs attention, why it matters and what should happen next.
