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How To Check If An Engineer Is Gas Safe Registered?

How Do I Find A Gas Safe Engineer

When you are searching for plumbers in Cardiff to work on any element of gas in your home, it’s crucial that you choose one that’s Gas Safe Registered. This is because as a Gas Safe engineer, they are authorized to work on gas appliances, fittings and installations.

For a plumber to be Gas Safe Registered, they must pass rigorous assessments to demonstrate their competence and knowledge of gas safety.

These assessments are carried out by the official body, which is of course the Gas Safe Register and if the engineer doesn’t pass, they won’t be legally allowed to work with gas.

How To Check If A Company Is Gas Safe Registered?

To check if an engineer is Gas Safe registered, there are a few simple steps you can follow:

  1. Ask to see their Gas Safe license card. Each year, the Gas Safe register issues new license cards that are all unique and engineers use these cards to prove that they are Gas Safe Registered. For further information regarding the license cards, read the section below.
  2. Check the Gas Safe Register website: The easiest and most reliable way to check if a company is Gas Safe registered is to visit the official Gas Safe Register website. On the website, you can search for the company by name or registration number. If the company is registered, it’ll appear in the search results. For example, you can find NJ Harkus on the Gas Safe Register by searching on their website.
  3. Check the company’s credentials: You can also ask the company for their Gas Safe registration number to check against the Gas Safe Register website to ensure it’s valid.
  4. Look for the Gas Safe registered logo: Gas Safe registered companies are required to display the Gas Safe registered logo on their website, vehicles and other promotional materials. If you see the logo, it’s a good indication that the company is registered. As an example, you can see the Gas Safe logo clearly on our van in the picture above.
  5. Check with the Gas Safe Register helpline: If you’re still unsure, you can call the Gas Safe Register helpline on 0800 408 5500 to verify the company’s registration status.

It’s important to remember that any gas work carried out by someone who is not Gas Safe registered is illegal and potentially dangerous. Therefore, checking a company’s credentials before hiring them for any gas-related work is always best.

Is Their License Card Legit?

As mentioned above, when instructing a plumber to work on any forms of gas, it’s advised that you ask to see their Gas Safe license card. All Gas Safe Engineers should hold their cards on them and they’ll include the following:

  • Photo of the engineer
  • Beginning and ending dates
  • License number (7 digits)
  • Unique holograms
  • The company name

If you curious about whether the card is legit, you can confirm their details by searching for their license number (or company name) on the Gas Safe Register.

What Should You Do If Gas Work Was Carried Illegally?

If you’ve had gas work such as a new boiler installed in your home but it turns out the engineer that installed it wasn’t registered, you should have it checked out by a registered engineer immediately. Ideally, you’ll want to turn off the gas supply and avoid using any gas appliances until it has been checked out. You should also report the illegal gas work to the Gas Safe Register.

Why Is Gas Safety So Important?

Gas safety is extremely important because malfunctioning or damaged gas appliances can lead to gas leaks, fires and even explosions. These dangers can be caused by a variety of issues such as faulty gas valves and can result in damage to both your appliances and your health.

In addition to the risk of gas leaks, malfunctioning gas appliances can also produce carbon monoxide. When inhaled, carbon monoxide replaces oxygen in your bloodstream, leading to the loss of cells and tissue. Even a small amount of carbon monoxide poisoning can result in headaches, nausea, dizziness or even unconsciousness.


To ensure gas safety in your home is up to the correct standard, it’s crucial that you use a Gas Safe Engineer for any gas work. Hopefully our guide has shown you how to find and check the credentials of a Gas Safe engineer. However, if you require further information, feel free to get in touch and we will try to provide our assistance where possible.

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