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Guide

How often should a fire alarm be serviced?

A plain-English guide to weekly tests, six-monthly servicing and what the law expects from the responsible person.

If you're the "responsible person" for a non-domestic building, the Regulatory Reform (Fire Safety) Order 2005 requires you to keep fire safety equipment in efficient working order. For fire alarms, BS 5839-1 sets out what that means in practice.

The short answer

  • Weekly: test one manual call point (a different one each week) and check the sounders work. You can do this yourself and record it in the logbook.
  • Monthly: if you have a standby generator, check it starts. Many sites also do a monthly visual check of the panel.
  • Every six months (maximum): a service by a competent engineer, including panel checks, battery tests and a sample of detectors.
  • Every 12 months: by the end of each year, every detector, call point and sounder should have been tested.

What happens at a service?

We check the logbook, inspect the panel and its power supplies, test the standby batteries, function-test a selection of devices, check the system still matches the building and record everything with a certificate. Any faults or changes to the building are reported in writing.

Not sure if your batteries are big enough? Try our free fire alarm battery calculator.

What about emergency lighting and extinguishers?

Emergency lighting needs a monthly function test and an annual full-duration test under BS 5266-1. Fire extinguishers need an annual service under BS 5306-3. We can do all three on the same visit, so you deal with one company and one set of paperwork.

Ask us about a maintenance contract.

Published 24 October 2026 by FITZ FIRE & SECURITY. This guide is general information, not a substitute for a site-specific assessment.

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