PlumbReviseNo signup needed. Create a free account to save future progress across devices.
A heating system needs circulation, useful heat output and controls that respond to demand. This question set helps you connect those jobs to the pipework, emitters and components you see on a domestic installation.
Sketch the flow and return, then locate the pump, emitters and expansion arrangement. Explain the intended route through the system before looking at a fault. This gives you a reference for deciding which observation is unusual.
Compare heating pipework layoutsFollow a demand for heating or hot water through the controls. Identify what is calling for heat and which components should respond. Extend your revision beyond the free set by comparing S-plan and Y-plan diagrams.
Understand boiler interlockLook at the pattern across the system, not just one cold radiator. Practise explaining how you would distinguish a circulation issue from a heat-output or control issue. Relate each proposed check to the symptom it could help explain.
Review radiator balancingTrace the path through the circuit and think about which controls should respond. Distinguish a symptom from its possible causes before choosing the next check. Review a diagram after answering and describe the sequence in your own words.
Choose a central heating mock practice test to review a group of answers at the end. These plumbing questions cover system principles; the separate gas CENWAT module covers gas boilers and water heaters.
The free test offers 5, 10 or 25 questions from this same set, with an optional practice timer. In Test mode, answers and explanations appear after you finish. Repeated tests reuse this bank, so a higher score can reflect familiarity.
Set up a free Central heating testThis page focuses on wet heating systems: circulation, radiators, controls, expansion and faults. Gas boiler and water-heater assessment belongs to the separate CENWAT area, alongside core gas safety revision.
Use your course requirements to set the scope. Our heating notes explain both arrangements, while the free question set includes S-plan and boiler-interlock practice. Try describing the operating sequence before checking the labelled diagram.
Write down the given values and units before opening a calculator. Use the worked radiator-sizing and expansion-vessel notes to check each stage of your reasoning. Change one input afterwards and explain why the result should change.
Group your mistakes by system layout, controls, circulation or calculations. Read the matching note and explain the answer without looking at the options. Then try the diagnostic set to practise choosing a next check from a set of symptoms.
All 25 questions on this page are free, with no account or card required. They are selected from the maintained Central heating question bank. Premium opens the full bank of 106 questions, more modules and Weak-Spot Review.
A free account saves the answers you give while signed in and lets you continue across devices. Without an account, this browser can remember your place for 30 days; it does not transfer earlier guest answers into an account. Signing up keeps the same free question allowance.