Gas safety · Homeowner answer

What is a Declaration of Conformance?

Short answer

It is the certificate a Registered Gas Installer (RGI) issues to confirm that gas work was carried out to the required standard. Since 2009, every domestic gas installation, alteration or appliance replacement in Ireland should end with one.

What changes the answer

the type of gas work done
whether it was a new installation, an alteration or an appliance replacement

What you can check yourself

ask for it before the installer leaves
keep it with your house documents

What to do next

If you have had gas work done and did not get a Declaration, ask the installer for it.

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This page gives general information only. Christy needs to see your system — in person or from your photos — before he can give you firm advice or a price.

Keep reading

More on gas safety.

All in this section

Do I need a carbon monoxide alarm?

If you have any fuel-burning appliance — a gas or oil boiler, a stove or an open fire — you should have a carbon monoxide alarm. Building Regulations generally require one when a new or replacement boiler or stove is fitted, and landlords should make sure every rented home with a fuel-burning appliance has one.

C. Kenneally · Oct 2026

How do I check a gas installer is registered?

Ask to see the RGI photo ID card. It is renewed every year, so check it shows the current year, then check the registration number with the RGI scheme (rgi.ie).

C. Kenneally · Oct 2026

What should I do if I smell gas?

Turn off the gas at the meter if you can do it safely, open doors and windows, do not use switches, flames or phones in the house, then leave the house and ring the Gas Networks Ireland 24-hour emergency line from outside on 1800 20 50 50.

C. Kenneally · Oct 2026