Study for Category I with confidence
Original MCQ practice covering vapour-compression theory, F-Gas / ODS regulations, leak checking, recovery, pipework and safe handling. Timed mocks, flashcards, spaced repetition and a readiness dashboard — 100% offline.
Full access requires a purchase (monthly $4.99, yearly $14.99, or lifetime $24.99 USD). There is no free tier.
Disclaimer
Independent study aid — not affiliated with City & Guilds or any certification body. Not a substitute for accredited Category I training or practical assessment.