A lot of apprentices make the mistake of thinking all their learning has to come from the engineer they’re working with.
The truth is, site experience is important, but you also need to take responsibility for your own progress.
Learn the names of components. Understand how heating systems work. Read up on common faults.
Watch how engineers diagnose problems. Ask better questions when you don’t understand something.
The apprentices who improve fastest are not always the ones who know the most at the start. They are the ones who keep learning after work, pay attention on site, and take the trade seriously.
If you want to become a proper plumbing and heating engineer, don’t just turn up and hope you improve.
Study the trade. Ask questions. Take notes. Build your knowledge every week.