⚠️ Study & revision only. This material supports ACS reassessment preparation and does not qualify you to work on gas. Only Gas Safe registered engineers may legally work on gas appliances and installations.Smell gas or suspect carbon monoxide? Make the area safe and call the National Gas Emergency Service on 0800 111 999.
About this unit
Using a flue gas analyser to assess how well a domestic appliance is burning, to BS 7967. Work through the five lessons below — each has teaching material, key facts and a short test — then take the full unit quiz. Anything you miss collects in Key Revision.