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Gas Appliance Warning Labels


What does it mean and what do you do?

If your Gas Safe registered engineer identifies an unsafe situation during a gas safety check or service, they’ll follow the Gas Industry Unsafe Situations Procedure (GIUSP). Here’s what the procedure involves:

  • They’ll first look to find the cause of the issue and rectify any faults.

  • If this isn’t possible, they’ll let you know that the faults must be repaired before the appliance can be used again.

  • If they can’t correct the problem straight away, they’ll request your permission to make the installation safe by disconnecting it or turning off the gas supply to the affected part.


Gas safety warning labels and unsafe categories


If a gas-related danger is identified in your home, your engineer will attach a ‘Danger Do Not Use’ warning label to the relevant appliance or fitting, and they’ll also provide you with a gas warning notice too. This notice will contain precise details of the unsafe situation.

There are two types of unsafe categories:


Immediately dangerous (ID)

Just as the category name suggests, an installation that’s been classified as ‘immediately dangerous’ is considered an immediate danger to life and property if left operating. Your engineer will disconnect it with your permission, and you won’t be able to use the installation until it’s been repaired and made safe.

If you don’t give your engineer permission to disconnect the installation and it runs on natural gas, they’ll report the situation to the Gas Emergency Service Provider (ESP), which has legal powers to disconnect the gas supply and make the situation safe. However, it’s worth noting that this doesn’t apply to liquid petroleum gas (LPG) installations.


At risk (AR)

This classification means one or more recognised faults have been found that could constitute a danger to life or property without further faults developing. With your permission your engineer will turn off the appliance, which shouldn’t be used again until it’s been fixed.

In limited circumstances, turning off the gas supply won’t reduce the risk. If this is the case, your engineer will give you a warning notice and tell you who you need to contact.


Extra information

If you’re told that your installation doesn’t comply with current standards, whether you take action on this is completely up to you. However, it’s always a good idea to bring an installation up to date.

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