How to check a gas engineer is Gas Safe registered
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It is illegal for any person to carry out work on gas appliances, pipework, or flues in the UK unless they are registered with Gas Safe Register. Using an unregistered engineer invalidates your home insurance and could endanger your life.
Every Gas Safe registered engineer carries an ID card. Ask to see it before any work starts. The card shows the engineer's name, photo, registration number, and — critically — the appliances they are qualified to work on (domestic boilers, cookers, LPG, etc.).
Verify the card is genuine using the Gas Safe Register website or phone line. Visit gassaferegister.co.uk/check-the-register or call 0800 408 5500. Enter the registration number or the engineer's name and postcode.
The register lists exactly which types of gas work the engineer is qualified for. An engineer registered only for gas cookers is not qualified to service your boiler — check the specific appliance category matches your job.
Beware of "Gas Safe certified" claims — there is no such thing. The correct term is "Gas Safe registered." Also beware of fake cards — always cross-check the number online rather than trusting the physical card alone.
For commercial properties, the same Gas Safe registration applies but engineers must also hold COCV1 and other commercial ACS qualifications. Domestic Gas Safe registration does not cover commercial gas work.
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