How to Find a Gas Safe Registered Engineer

If someone turns up at your door offering to fix your boiler for cash, you need to know one thing before they touch a single pipe: are they actually allowed to work on gas appliances in the UK? The answer, legally, comes down to whether they're on the Gas Safe Register. Working out how to find a Gas Safe registered engineer isn't complicated, but skipping the check can cost you a lot more than money.

It's the law that anyone carrying out gas work, whether that's servicing, installing or fixing a boiler, must be Gas Safe registered. Not "qualified", not "experienced", registered. There's a difference, and it matters.

Why the Gas Safe Register exists

Before 2009 the scheme was called CORGI. It was replaced by Gas Safe Register, which is now the only official gas registration body in Great Britain. Every registered engineer is issued an ID card that lists exactly what type of gas work they're qualified to do, whether that's boilers, cookers, fires or commercial catering equipment.

Gas work done by someone unregistered isn't just risky, it's illegal, and it can invalidate your home insurance if something goes wrong. Carbon monoxide leaks, gas explosions and faulty flues are not hypothetical risks, they're the reason the scheme exists at all.

How to check an engineer's Gas Safe ID

Every registered engineer carries an ID card. Before any work starts, ask to see it and check three things:

• Their name matches the person stood in front of you
• The card hasn't expired
• The specific job they're doing (boiler installation, servicing, repair) is listed on the back

You can also verify anyone's registration for free on the Gas Safe Register website using their licence number or business name. It takes thirty seconds and it's the single most useful thing you can do before letting anyone near your gas supply.

Where to actually find one

You've got a few routes:

• The Gas Safe Register's own engineer search tool, which lets you search by postcode
• Manufacturer-approved installer lists, such as those from Worcester Bosch, Vaillant or Ideal
• A lead platform that only works with vetted, Gas Safe registered engineers in your area, like Norvera's areas coverage across the Midlands

National providers often quote £3,000 or more for a straightforward combi swap, partly because of overheads that have nothing to do with the quality of the fitting. Working with a local, registered engineer through a fixed-price platform tends to keep quotes more honest, without cutting corners on compliance.

What to do once you've found one

Once you're confident someone is registered, it's worth being clear about the job itself. If you're not sure what you need, our guides on boiler types and sizing are a good starting point. If your existing boiler is on its last legs, these signs are worth checking before you book anyone out.

For routine maintenance, annual servicing needs a Gas Safe engineer too, and our guide on how often to service a boiler covers the basics.

Getting a fixed price, not a guessing game

The safest and simplest route is to go through a service that only works with registered engineers and gives you a fixed price upfront, rather than a vague estimate that grows once someone's in your loft. You can also check Energy Saving Trust for general guidance on boiler efficiency and running costs while you're comparing options.

If you're ready to move forward, you can get a fixed price for a new boiler, or if it's urgent, go straight to emergency help.