Smell of gas — Potential gas leak and explosion risk

What does Smell of gas mean?

If you detect a smell of gas in the building, this indicates a potential gas leak, carrying a risk of poisoning and explosion. This can be caused by installation errors, damage, or tampering.

• Installation errors
• Damage to gas lines or boiler components
• Manipulation or unauthorized changes
• Unauthorised installation site

Click steps to track your progress.

1. 1

   Avoid rooms that smell of gas.

2. 2

   If possible, open doors and windows fully to ensure air circulation.

3. 3

   Do not use naked flames, smoke, or operate any electrical switches, plugs, doorbells, or telephones in the building.

4. 4

   Close the gas meter isolator device or the main isolator device, and if possible, the gas stop cock on the unit.

5. 5

   Warn other occupants by knocking, leave the building immediately, and ensure no third parties enter.

6. 6

   Alert the police and fire brigade when outside the building, then inform the gas supply company or National Grid Transco (0800 111999).