Understand England's alarm provisions, the gas cooking-only exclusion and the installation checks to make.
A cooker or stove installation can bring a carbon monoxide alarm requirement as well as fuel and flue considerations. Start with the appliance's fuel, whether it is a new or replacement installation, and which country's rules apply.
Approved Document J is Building Regulations guidance for England. Its amended carbon monoxide alarm provisions took effect on 1 October 2022. The guidance covers combustion appliances and fuel storage, including air supply, discharge of combustion products and protection of the building.
For a new or replacement fixed solid-fuel appliance installed in a dwelling, it says an alarm should be provided in the room containing the appliance. It gives the same guidance for a new or replacement fixed oil-burning appliance. Gas-burning appliances are also covered, with an exclusion for those used solely for cooking.
The wording includes replacement installations. Replacing a fixed oil or solid-fuel cooker is therefore a reason to check the alarm provision alongside the installation work. These England provisions should not be assumed to describe requirements elsewhere in the UK.
The Approved Document J text excludes gas appliances "used solely for cooking" from its new or replacement gas-appliance alarm provision. This is a specific description of use. It should not be broadened into an exclusion for every appliance called a cooker.
When considering a gas heat storage model that also heats the room, do not assume the cooking-only exclusion applies. Establish what the appliance does as part of the installation assessment. The quoted gas exclusion does not extend to the separate provisions for fixed oil or solid-fuel appliances.
Approved Document J specifies compliance with BS EN 50291-1:2018. It says the alarm should have a battery designed to operate for the alarm's working life and a warning device to alert users when that working life is due to pass.
Use the stated standard when discussing alarm selection. Keep the alarm's working-life warning distinct from the wider task of maintaining the appliance: selecting an alarm and planning servicing are separate parts of preparing for ownership. The guidance does not present the alarm as a replacement for correct installation.
The solid-fuel section places the alarm in the same room as the appliance, between 1 and 3 metres away horizontally. For ceiling mounting, it specifies at least 300 mm from any wall. For wall mounting, it says as high as possible, above doors and windows, but not within 150 mm of the ceiling.
Horizontal distance and mounting position are both part of that guidance. Consider the intended position during the installation discussion, rather than treating the presence of an alarm somewhere in the home as the same thing as the specified same-room provision.
Approved Document J says an alarm should not be regarded as a substitute for correct installation and regular servicing. For gas appliances, the Health and Safety Executive's domestic gas guidance strongly advises installation, regular maintenance and servicing at least annually by a Gas Safe registered engineer.
HSE also explains that anyone employed to work on domestic gas appliances must be registered and competent in the relevant area of gas work. Competencies are shown on the back of the engineer's Gas Safe Register ID card. Registration and the appropriate scope of work should both be checked.
HSE describes an England landlord duty that took effect on 1 October 2022. Relevant landlords must provide a carbon monoxide alarm in any room used as living accommodation that contains a fixed combustion appliance, excluding gas cookers.
This landlord duty and the Building Regulations installation guidance are separate checks. The landlord wording concerns rooms used as living accommodation; Approved Document J describes new or replacement installations in dwellings. Keep each exclusion with the provision it belongs to when reviewing a rented home's cooker or stove.
HETAS operates a competent person scheme for solid-fuel and biomass heating. Its certificate guidance explains that, in England and Wales, self-certification takes the place of a local authority building notice. HETAS says the certificate will be required when selling a home; it also says an operating manual should be provided.
For oil work, OFTEC's competent person guidance explains that registered heating installers can self-certify compliance in England and Wales, as well as the Channel Isles and Isle of Man. Servicing and repair are not covered by Building Regulations, but OFTEC says they should be undertaken by a competent person.
Agree how the installation will be documented and keep the appliance instructions with the compliance paperwork. The installation guide puts these checks alongside fuel connections and flue considerations.