ST0322 Refrigeration, Air Conditioning and Heat Pump Engineering Technician: practice questions and mock tests
A 50-question technical test covering refrigeration science, system components, electrical controls, installation, commissioning and fault diagnosis.
Apprentices registered to ST0322 version 1.3 and preparing for the Level 3 knowledge test.
Standard
ST0322
Version
v1.3
Level
3
Exam at a glance
ST0322 · version 1.3
- Questions / papers
- 50 questions
- Time allowed
- 100 minutes
- Pass requirement
- 30/50
- Reference policy
- Closed book
What is the ST0322 Refrigeration, Air Conditioning and Heat Pump Engineering Technician test?
The ST0322 test checks whether an apprentice can connect thermodynamic principles and environmental responsibilities to safe decisions on refrigeration, air-conditioning and heat-pump systems.
This page focuses on the knowledge-test method. The full end-point assessment may also include practical, observation or professional-discussion methods. Use the official assessment-plan links below to check the complete EPA.
When you take it
It is normally taken during end-point assessment, after the apprentice has completed training and passed through gateway. The employer, training provider and end-point assessment organisation agree the booking and sequence.
- 01
Training
Build the occupational knowledge, practical competence and workplace evidence.
- 02
Gateway
The employer confirms the apprentice is ready to enter end-point assessment.
- 03
Knowledge test
Sit the ST0322 multiple-choice knowledge test.
- 04
Other EPA methods
Complete the practical, observation or discussion methods specified by the assessment plan.
Try a practice question
ST0322 · Original practice material
Employers must provide safe systems, information, training and suitable equipment, while workers must take reasonable care and cooperate with controls.
Which option is being described?
Choose one answer, then check it.
ST0322 exam format and scoring
These are the recorded rules for this standard version. Always compare them with the final joining instructions from your end-point assessment organisation.
Delivery
Controlled and closed book.
Question style
50 four-option multiple-choice questions with one correct answer.
Books and materials
A scientific calculator and pressure-enthalpy chart are available.
| Paper | Coverage | Questions | Time | Grade boundary |
|---|---|---|---|---|
| Knowledge test | Knowledge mapped to the ST0322 test | 50 | 100 minutes | Pass 30/50Distinction 40/50 |
What to revise for ST0322
The current published Trade Exams library for this standard contains 500 original practice questions and 28 focused fact sheets. These are revision-library counts, not official exam weightings.
Knowledge-area map
Standard reference
ST0322
Refrigeration cycle
- T01Safety, environment and refrigerants
- T02Refrigeration science
- T03Components and controls
- T04Installation and pipework
- T05Commissioning and testing
- T06Diagnostics and maintenance
Safety, environment and refrigerants
01Hazards, containment, recovery, emissions and environmental responsibility.
Refrigeration science
02Heat transfer, pressure, temperature, state change and the vapour-compression cycle.
Components and controls
03Compressors, heat exchangers, expansion devices, electrical and control systems.
Installation and pipework
04Materials, joints, cleanliness, strength, leak prevention and system layout.
Commissioning and testing
05Evacuation, charging, measurements, performance checks and records.
Diagnostics and maintenance
06Symptoms, chart interpretation, fault isolation and corrective action.
How to prepare for the ST0322 test
A practical four-stage revision sequence: understand the rules first, close topic gaps, practise decisions, then rehearse under the real time pressure.
- 1
Practise moving between a system diagram, gauge readings and the pressure-enthalpy chart.
- 2
Learn the reasoning behind safe refrigerant recovery and leak-control decisions.
- 3
Use a scientific calculator for units, heat and performance relationships.
- 4
Complete 50-question sessions inside the 100-minute limit with time to check calculations.
Revision access
Questions, mocks and fact sheets
One exam, one clear price. Access ends automatically and never renews into a subscription.
£10
30 days of access
Everything for this exam for 30 days.
One-off payment. No automatic renewal.
£20
90 days of access
Everything for this exam for 90 days.
One-off payment. No automatic renewal.
ST0322 exam questions answered
Format, timing, version, preparation and booking questions—answered from the recorded standard and assessment-plan sources.
01What is the ST0322 Refrigeration, Air Conditioning and Heat Pump Engineering Technician exam?
The ST0322 test checks whether an apprentice can connect thermodynamic principles and environmental responsibilities to safe decisions on refrigeration, air-conditioning and heat-pump systems. This page focuses on the knowledge-test method; the full end-point assessment may also contain practical or discussion-based methods.
02Who should use this ST0322 revision page?
Apprentices registered to ST0322 version 1.3 and preparing for the Level 3 knowledge test.
03When do apprentices take the ST0322 knowledge test?
It is normally taken during end-point assessment, after the apprentice has completed training and passed through gateway. The employer, training provider and end-point assessment organisation agree the booking and sequence.
04What is the ST0322 exam format?
Multiple-choice knowledge test. Controlled and closed book. 50 four-option multiple-choice questions with one correct answer.
05How many questions are there and how long does the test take?
50 questions and 100 minutes. Knowledge test: 50 questions, 100 minutes, pass 30/50.
06What is the ST0322 pass mark?
30/50. Knowledge test: pass 30/50; distinction 40/50.
07Is the ST0322 test open book?
Closed book. A scientific calculator and pressure-enthalpy chart are available.
08What subjects should I revise for ST0322?
The main areas are Safety, environment and refrigerants, Refrigeration science, Components and controls, Installation and pipework, Commissioning and testing and Diagnostics and maintenance. The detailed coverage on this page stays within the knowledge mapped to this assessment method.
09How should I prepare for the ST0322 exam?
Practise moving between a system diagram, gauge readings and the pressure-enthalpy chart. Learn the reasoning behind safe refrigerant recovery and leak-control decisions. Use a scientific calculator for units, heat and performance relationships. Complete 50-question sessions inside the 100-minute limit with time to check calculations.
10Which version of ST0322 does this page cover?
The assessment details here are aligned to ST0322 version 1.3.
11Are the Trade Exams questions official live exam questions?
No. Trade Exams' 500 practice questions and 28 fact sheets are independently authored revision material. They do not reproduce recalled, live, confidential or password-protected EPAO questions.
12Where do the ST0322 exam details come from?
The format and scope are based on the listed Skills England standard and end-point assessment sources, checked for this content pack on 2026-07-29. Always confirm late changes and booking instructions with the employer, training provider or EPAO.
13How does Trade Exams access work?
Access is a one-off £10 payment for 30 days or £20 for 90 days. It never renews automatically.
Official sources and currency
Check the standard behind this page
The format and scope were checked on 29 July 2026. Assessment arrangements can change, so confirm the final booking details with your employer, training provider or EPAO.
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