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Hiring a heating engineer

How to Check an Engineer Is Gas Safe Registered

Anyone working on gas appliances in your home must be on the Gas Safe Register. Checking takes a couple of minutes and is one of the most important things you can do before work starts.

3 min read · Updated October 2026

Heating engineer servicing a wall-mounted gas boiler with its front cover removed in a kitchen

Why it matters

Badly fitted or poorly maintained gas appliances can cause gas leaks, fires, explosions and carbon monoxide poisoning. That's why, by law, anyone carrying out gas work in homes in Great Britain, Northern Ireland, the Isle of Man and Guernsey must be on the Gas Safe Register.

Registered engineers have had their qualifications checked for the specific types of gas work they do. Being registered for one type of work, such as cookers, doesn't automatically cover another, such as boilers.

Check the ID card

Every registered engineer carries a Gas Safe ID card. Check:

  • The photo matches the person in front of you
  • The licence number and business details
  • The expiry date
  • The back of the card, which lists the types of gas work they're qualified to do

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Check online

You can search for an engineer or business on the Gas Safe Register website using their licence number or business name, and see what they're registered for. It's sensible to check before you accept a quote.

Other registrations you may see

Oil boilers are usually installed and serviced by technicians registered with OFTEC. Electrical work linked to an electric boiler may be done by an electrician registered with a competent person scheme. Gas Safe registration covers gas work only.

Common questions

Is CORGI registration still valid?

No. The Gas Safe Register replaced CORGI in 2009. Engineers must now be Gas Safe registered to work on gas.

What if an engineer isn't registered?

Don't let them work on gas appliances. You can report illegal gas work to the Gas Safe Register.

Do I need a Gas Safe engineer for radiators?

Not for radiator work alone, as it doesn't involve gas. Any work on the boiler itself or the gas supply must be done by a Gas Safe registered engineer.

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