Elec Training

New Law for Smoke and Carbon Monoxide Alarms

Last Updated 11/21/2025

Fire and carbon monoxide safety in residential properties has always been a high priority for the UK government, but recent updates to legislation have significantly strengthened the rules for landlords and homeowners. The new law for smoke and carbon monoxide alarms reflects the government's commitment to ensuring safer living environments, preventing fire-related tragedies, and reducing the risks associated with deadly carbon monoxide leaks.

These legal changes are not just regulatory updates—they represent a major shift in responsibility, awareness, and public safety. Understanding the new law, knowing what is required, and ensuring compliance are essential for landlords, tenants, and homeowners alike.

As part of the broader push for safety, training organisations like Elec Training and educational platforms such as www.elec.training continue to play a key role in guiding professionals and the public on proper electrical and safety standards.

As Charanjit Mannu, Director at Elec Training, advised, safety devices alone are not enough—correct installation, regular maintenance, and ongoing awareness are equally important.

Why the New Law Matters

Smoke and carbon monoxide (CO) alarms save lives. Each year, dozens of avoidable deaths occur in homes due to fires or CO poisoning—often because alarms were missing, damaged, or not functioning.

The new law ensures:

  • A consistent level of safety in rented homes

  • Stronger enforcement of alarm installation

  • Better protection for tenants and families

  • Greater awareness of hidden home hazards

These updates aim to eliminate preventable tragedies by making safety equipment mandatory.

What the New Law Requires

The updated legislation applies to England and affects private landlords, social landlords, and residential properties. Here is a breakdown of what the law now requires:

1. Smoke Alarms Must Be Installed on Every Storey

Landlords MUST install at least one smoke alarm on every floor of a property where there is a room used as living accommodation.

This includes:

  • Living rooms

  • Bedrooms

  • Hallways

  • Landings

Even if a floor is only used for storage, if it contains a living area (like a converted loft), alarms must be installed.

2. Carbon Monoxide Alarms Are Mandatory in Certain Rooms

A CO alarm must be installed in any room containing a fixed combustion appliance, such as:

  • Gas boilers

  • Wood-burning stoves

  • Oil heaters

  • Gas fireplaces

  • Solid-fuel appliances

This requirement excludes only appliances used solely for cooking, such as gas ovens.

3. Alarms Must Be Replaced or Repaired Promptly

If a tenant reports a faulty smoke or CO alarm, the landlord must repair or replace it as soon as reasonably practicable. Failing to act quickly may result in penalties.

4. Alarms Must Be Working at the Start of a Tenancy

Before a new tenant moves in, the landlord must test and confirm all alarms are functioning. Tenants are encouraged to continue regular testing during their tenancy.

5. Landlords Can Face Penalties for Non-Compliance

Local authorities have the power to issue fines of up to £5,000 if landlords fail to comply with the regulations.

Who Is Responsible for What?

Understanding responsibilities is key to ensuring safety and legal compliance.

Landlords Are Responsible For:

  • Providing smoke and CO alarms

  • Ensuring alarms are working at tenancy start

  • Replacing faulty alarms

  • Installing alarms in the correct locations

  • Following the regulations fully

Tenants Are Responsible For:

  • Testing alarms regularly (monthly is recommended)

  • Reporting faults immediately

  • Avoiding tampering with alarms

The Importance of Proper Installation and Electrical Competence

Although smoke and CO alarms seem simple to install, safety experts stress that correct installation and maintenance are critical. If alarms are placed incorrectly, poorly wired, or not tested, they may fail when needed most.

Training providers like Elec Training emphasise best practices in alarm installation, including:

  • Avoiding installation too close to cooking appliances

  • Correct alarm spacing

  • Understanding wired vs. battery alarms

  • Installing interlinked alarms on new builds

  • Complying with BS 5839-6 fire detection standards

Online resources at www.elec.training further support electricians and homeowners in understanding these legal and technical requirements.

Types of Alarms Covered in the New Law

There are several alarm types that comply with the legislation. Landlords should understand the options to choose the most suitable devices.

1. Optical Smoke Alarms

Best for:

  • Hallways

  • Living rooms

  • Bedrooms

They react to smouldering fires and reduce false alarms from cooking fumes.

2. Ionisation Smoke Alarms

Sensitive to fast-flaming fires, but can be prone to false alarms in kitchens.

3. Heat Alarms

Ideal for kitchens, as they detect rapid temperature increases without reacting to cooking smoke.

4. Carbon Monoxide Alarms

These alarms detect the presence of CO gas, which is:

  • Colourless

  • Odourless

  • Deadly

They should be placed at head height and not blocked by furniture.

Best Practices for Compliance and Safety

Installing alarms is not enough—proper maintenance and care are essential.

1. Test Alarms Monthly

Press the button to check functionality.

2. Replace Batteries Annually (Unless 10-Year Sealed)

A non-working alarm is just as dangerous as not having one.

3. Replace Alarms Every 7–10 Years

Sensors degrade over time.

4. Keep Alarms Clean

Dust can affect performance.

5. Avoid Tampering

Do not remove batteries to stop beeping alarms—address the cause instead.

How These Rules Improve Home Safety

The new law ensures that every rental property meets a minimum safety standard. With millions of households relying on landlords, the legislation ensures:

  • Better awareness of smoke and CO risks

  • Fewer preventable deaths

  • Faster response to fire hazards

  • Increased accountability

  • Stronger tenant protection

A small investment in alarms can save lives.

Conclusion

The new law for smoke and carbon monoxide alarms marks a significant step forward for residential safety in the UK. Landlords, tenants, homeowners, and electrical professionals must work together to implement these rules effectively.

As emphasised earlier, Charanjit Mannu, Director at Elec Training, advised, installing alarms is not simply a tick-box exercise—it requires proper understanding, placement, and maintenance to ensure maximum protection.

Training organisations like Elec Training and online guidance from www.elec.training help raise awareness and educate both professionals and the public on the importance of safe, compliant installations.

With the right knowledge, proactive maintenance, and adherence to the law, we can ensure every home is protected from the dangers of fire and carbon monoxide.


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