Gas Cooker and Hob Safety: Warning Signs and Annual Checks

Gas cookers and hobs are safe when they are installed, used and maintained properly. Problems build slowly, and the signs are easy to miss. This guide explains what to look for, why an annual check matters and what to do in an emergency.

Warning signs of an unsafe gas appliance

The Gas Safe Register lists these signs that a gas appliance may not be working safely:

• Flames that look limp and yellow instead of crisp and blue
• Black marks or staining around the appliance
• More condensation than usual in the room

If you notice any of these, stop using the appliance and have a Gas Safe registered engineer check it. Don't try to adjust the appliance yourself.

Carbon monoxide: the invisible risk

Carbon monoxide (CO) is a poisonous gas produced when fuel doesn't burn properly. You can't see, smell or taste it. Symptoms include headaches, dizziness, nausea and shortness of breath, and in severe cases collapse and loss of consciousness. To protect your household:

• Fit an audible carbon monoxide alarm that meets the EN 50291 standard, and install it as the manufacturer instructs
• Don't block air vents or chimneys
• Never use a gas cooker or hob to heat a room
• Get medical help if you suspect carbon monoxide poisoning

Have your gas appliances checked every year

The Gas Safe Register recommends a yearly check of all your gas appliances by a registered engineer, and the Health and Safety Executive strongly recommends that gas appliances are serviced at least once a year. A check can spot a developing fault before it becomes dangerous, such as a worn flame failure device, a partly blocked burner or a loose connection. If you rent, your landlord is responsible for arranging an annual gas safety check.

Everyday habits that help

• Keep burners and ports clean, and dry parts fully before refitting them (see what to do when a gas hob won't light)
• Don't leave pans unattended, and keep the area around the hob clear of tea towels and packaging
• Use pans of a sensible size, so that flames don't lick up the sides
• Make sure the room is ventilated while you cook

Checking an engineer is registered

Anyone you employ to work on gas appliances in your home must be on the Gas Safe Register. Ask to see their Gas Safe ID card and check their registration on the register's website. Electrical & Gas Care is Gas Safe registered under number 596103, and our engineers repair gas cookers, ovens and hobs across Swansea, Mumbles and the Gower. See our cooker repair and hob repair pages.

Frequently asked questions