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ACS core assessment

ACS CPA1: Combustion performance analysis

Assessed alongside CCN1: checking that appliances burn safely, using a flue gas analyser.

The module

  1. M10

    Combustion performance & CO

    Using a flue gas analyser, interpreting readings and testing for carbon monoxide.

    Coming soon

The City & Guilds Level 3 Diploma in Gas Engineering (9074-03) handbook, version 3.1 (November 2023), assesses combustion performance analysis together with the domestic core (CCN1), and every pathway lines up with CPA1. The title here is a plain description, not the official ACS title; check your certification body's documents for the exact scope.