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How Often Should Smoke Alarms Be Tested?

How Often Should Smoke Alarms Be Tested

Ensuring the safety of your home and loved ones is paramount, and one crucial aspect of home safety is the proper maintenance and testing of smoke alarms.

This is because smoke alarms play a vital role in alerting you and others to the presence of smoke, providing valuable time to evacuate in the event of a fire.

To answer the question of how often they should be tested, below we walk you through everything you need to know.

A Landlord’s Legal Requirement

The legal requirements for smoke alarms in the UK have been reinforced by the Smoke and Carbon Monoxide Alarm Regulations 2015, which came into effect on October 1, 2015. Subsequent amendments, such as the Smoke and Carbon Monoxide Alarm (Amendment) Regulations 2022, were enforced from October 1, 2022.

As of the latest regulations, landlords must adhere to the following obligations:

  1. Smoke Alarms:
    • Ensure at least one smoke alarm is installed on each storey with a room used as living accommodation.
    • Conduct repairs or replacements promptly upon being informed of faults.
  2. Carbon Monoxide Alarms:
    • Equip a carbon monoxide alarm in any living accommodation room containing a fixed combustion appliance (excluding gas cookers).
  3. Enforcement and Penalties:
    • Local authorities enforce these requirements and can impose fines of up to £5,000 for non-compliance based on remedial notices.
  4. Additional Guidance and Legislation:
    • Landlords are encouraged to consult informational booklets and guidelines for comprehensive understanding, such as the Smoke and Carbon Monoxide Alarm Regulations 2022.
    • Relevant legislation includes the Housing Act 2004, the Fire Safety Act 2021, and the Building Safety Act 2022.
  5. Responsibility and Updates:
    • Landlords are responsible for applying laws correctly and ensuring compliance with updates.
    • The legislation is subject to periodic updates, and landlords should stay informed about changes to maintain adherence.

The regulations cover various aspects, including alarm types, installation locations, and compliance in different tenancy scenarios. Staying informed is crucial for landlords to fulfil their legal obligations and maintain the safety of their rented properties. For further information, we advise that you read the government’s guidelines.

How Frequently Should Smoke Alarms Be Tested?

When it comes to testing your smoke alarms, we recommend testing them monthly and also testing them more thoroughly annually. With regards to the monthly testing, most smoke alarms should have a dedicated “test” button that you can push as a “quick” test. However, for your annual tests, you should also clean the alarm and check for any signs of damage.

As part of your annual test, it’s also advised that you replace the batteries, even if the “low-battery” indicator isn’t present for peace of mind. If the alarm is mains-powered, this will include replacing the backup battery instead.

How Long Do Smoke Alarms Last?

Smoke alarms usually last around 10 years and you’ll be able to find out how old yours currently is by the manufacturing date on the alarm. Depending on your particular alarm, some have an end-of-life indicator, signalling when it’s time for a replacement.

It’s worth pointing out that even if the alarm seems functional, ageing components may affect its reliability. Therefore, if you have reached the 10-year deadline, ensure you replace (and upgrade) where possible.


Regular testing of smoke alarms is a simple yet effective way to enhance the safety of your home. By adhering to the recommended testing frequency and conducting routine maintenance, you can have confidence in the reliability of your smoke alarm system.

Remember, a few minutes spent testing can make a significant difference in protecting what matters most—your family and your home.

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Assured Electrical Solutions Limited, Sophia House, 28 Cathedral Road, Cardiff, CF11 9LJ
07741 502012 /
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