Gas Safety Regulations — What Every Homeowner Should Know

The Gas Safety (Installation and Use) Regulations 1998 require that all gas work in domestic properties is carried out by a competent person. In practice, this means a Gas Safe registered engineer. The Gas Safe Register was established in 2009, replacing CORGI as the official gas registration scheme for the UK. Verification is instant at GasSafeRegister.co.uk or by calling 0800 408 5500. Every registered engineer carries a Gas Safe ID card with their personal licence number, the date of expiry, and the specific types of gas work they are qualified to carry out.

Any work that involves the gas supply or a gas appliance counts as gas work and requires a Gas Safe registered engineer. This includes: installing, servicing, or repairing a boiler; installing, connecting, or disconnecting a gas cooker or hob; installing or servicing a gas fire; any alteration to gas pipework (even moving a pipe by a few centimetres); connecting or disconnecting meters; work on LPG systems. The definition is broad deliberately — even a seemingly minor alteration to gas pipework has the potential to create a dangerous leak.

Landlords have a legal duty to ensure all gas appliances and pipework in rented properties are maintained in a safe condition. This includes an annual Gas Safety Check (resulting in a Gas Safety Record, commonly called a CP12 certificate) carried out by a Gas Safe registered engineer. The Gas Safety Record must be provided to existing tenants within 28 days of the check, and to new tenants before they move in. Records must be retained for at least 2 years. Failure to comply is a criminal offence with penalties including fines and imprisonment. The Gas Safety Check also includes inspection of flues and ventilation — not just the appliances themselves.

Homeowners (as opposed to landlords) have no legal requirement for an annual gas safety check. However, the Health and Safety Executive, Gas Safe Register, and every boiler manufacturer strongly recommend an annual boiler service by a Gas Safe registered engineer. The practical reasons are compelling: manufacturers require annual servicing to maintain warranty; a serviced boiler uses less energy and has fewer breakdowns; annual checks catch deteriorating components before they fail; carbon monoxide risks from poorly maintained appliances are identified. The cost is modest (£80–£120) relative to the protection it provides.

Carbon monoxide (CO) is produced by the incomplete combustion of gas, oil, wood, and other fuels. It is colourless, odourless, and kills quickly at high concentrations. All rooms containing a combustion appliance (boiler, gas fire, woodburner) should have a CO detector. CO detectors are inexpensive (£20–£40) and are legally required in rooms with combustion appliances in new rented properties. For older properties, fit them regardless of legal requirement. Symptoms of CO poisoning include headaches, dizziness, nausea, and confusion — symptoms that are easily confused with a cold or flu, especially in winter when windows are closed.

If you smell gas or suspect a gas leak: do not use any electrical switches (including light switches — the spark can ignite a gas accumulation); open all windows; leave the property; call the National Gas Emergency Service on 0800 111 999 (free, 24/7). Do not re-enter the property until the emergency services give the all-clear. If you have a pre-payment meter that is running out, call the National Gas Emergency Service anyway — they will ensure supply is maintained for safety reasons. Never investigate a suspected gas leak yourself.