Primary sources

Safety & official resources

Use these sources alongside our editorial guides. Government agencies provide public safety guidance; CSIA is a separate industry education and certification organisation. This directory is independent of all of them.

Emergency first

If a carbon monoxide alarm sounds, an active fire is suspected, or smoke is filling the home, leave the building and call emergency services from outside.

CSIA: chimney inspection levels

Plain-language explanation of Level 1, 2 and 3 scopes and common triggers. The linked overview is older; confirm the current standard and local requirements with a qualified inspector.

Reviewed September 2026. Local code adoption and appliance instructions vary; ask the authority having jurisdiction or a qualified professional about your specific installation.