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Gas Warning / Advice Notice

A Gas Warning / Advice Notice is the formal document issued by a Gas Safe registered engineer when a gas appliance or installation is found to be unsafe. It classifies the unsafe situation under the Gas Industry Unsafe Situations Procedure (GIUSP) as Immediately Dangerous (ID) or At Risk (AR), and records the action taken to make the situation safe. Engineers have a legal duty to issue this notice and inform the responsible person.

Gas Safety (Installation and Use) Regulations 1998, Gas Industry Unsafe Situations Procedure (GIUSP)Valid: N/A (notice remains in effect until defect is rectified)

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Sample Gas Warning Notice certificate

Sample Gas Warning / Advice Notice certificate created with CertBox, showing the professional PDF layout with unsafe situation classification (immediately dangerous or at risk under the giusp), detailed description of the defect and associated risk, action taken (appliance disconnected, turned off, or left in use with advice)

Sample Gas Warning Notice with fictional data. All personal details shown are fake.

What it covers

  • Unsafe situation classification (Immediately Dangerous or At Risk under the GIUSP)
  • Detailed description of the defect and associated risk
  • Action taken (appliance disconnected, turned off, or left in use with advice)
  • Warning label attached to the appliance
  • Responsible person informed verbally and in writing
  • Gas Safe Register notification (for ID situations)

Who needs a Gas Warning Notice?

Gas Safe registered engineers (legal requirement to issue)
Landlords
Homeowners
Tenants

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Frequently asked questions about Gas Warning Notice

When must a warning notice be issued?
A Gas Safe engineer must issue a warning notice whenever they find a gas appliance or installation classified as Immediately Dangerous (ID) or At Risk (AR). Where an installation is not to current standards but is not unsafe, the engineer should still advise the responsible person in writing.
What is the difference between ID and AR?
Immediately Dangerous (ID) means there is an immediate risk to life and the appliance must be disconnected. At Risk (AR) means it is not immediately dangerous but could become so if used. "Not to Current Standards" (NCS) was removed from the GIUSP because an NCS situation is, by definition, not unsafe — engineers still record and advise on NCS issues, but they are not classed as unsafe situations.
Can a tenant refuse to let the engineer turn off the appliance?
For ID situations, the engineer must disconnect the appliance regardless. For AR, if the responsible person refuses to allow disconnection, the engineer must clearly advise them of the risks and record this on the warning notice.

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