Pressure–enthalpy diagrams for 2079
You do not need to be a thermodynamics lecturer — you need to read the chart confidently under exam pressure.
F-Gas 2079 blog
Study tips, exam technique and revision notes for UK Category I engineers — written in plain English.
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Superheat and subcooling for 2079
The exam rarely asks you to derive formulae — it tests whether you recognise safe charging and fault symptoms.
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2079 vs 2079-11 vs 2079-12
Qualification numbers confuse everyone — here is how the suite fits together for UK refrigerant work.
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The IF GAZ Idiots Guide explained
Plain-English study notes aligned to UK Category I — how to use the guide with topics and quizzes.
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F-Gas 2079 Category I: the 40-question paper
How the timed multiple-choice paper is structured and which topic areas carry the most marks.
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How to pass City & Guilds 2079 on GOLA
A sensible revision order, mock exam habits and paperwork practice before you sit the real GOLA paper.
Ready to revise? Try the free City & Guilds CG Sample v1 (no registration), then register for full access or a free account (glossary, study links and sample quiz questions). Work through the Idiots Guide and practice questions.
IF GAZ is an independent revision aid. Articles and mocks are not approved by City & Guilds and do not replace college training or the official GOLA exam.