Ten minutes in the van between calls is enough for ten questions. F-Gas Study holds over 450 of them across all four sections, so revision fits into the day rather than waiting for an evening you were never going to get.
Pick a section and run through five, ten, or the lot. You can narrow it to the questions you haven't seen yet, or the ones you got wrong last time. Every answer is explained, and most quote the page of the reference manual it came off.
There's a full mock paper as well: 40 questions, 80 minutes, 75 per cent to pass, with the clock optional. Scores are tracked by section and topic, so you can see what still needs work rather than guessing at it.
Works offline, no account. Five questions in each section are free to try.
F-Gas Study is an independent revision aid, not affiliated with any awarding body.
Privacy Policy: https://www.81labs.co.uk/privacy/f-gas-study
450+ questions and a mock paper, so you can pass the F-Gas qualification.