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Unlock all lessons and mock exams to pass Level 2 + Level 3 theory exams.
Select your qualification level below. Complete the lessons, practice with mock exams and prepare for your City & Guilds certification.
Level 2
Level 3
Essential health, safety, and working practices required on-site and within the plumbing industry.
19 Lessons
Health and Safety Legislation Overview
Employer and Employee Duties
Risk Assessments
Method Statements & Permits
Identifying Hazards
Asbestos Awareness
Lead Safety
Personal Protective Equipment (PPE)
Respiratory and Hearing Protection
Manual Handling
Emergency Response & First Aid
Electrical Safety on Site
Safe Isolation of Electricity
Bottled Gases
Oxyacetylene Equipment
Fire Safety
Working at Height (Ladders)
Scaffolds and MEWPs
Excavations and Confined Spaces
Fundamental plumbing skills, hand tools, and pipework fabrication techniques (copper, plastic, and low-carbon steel).
Basic Hand Tools
Specialist Plumbing Tools
Power Tools
Copper Tube Specifications
Machine Bending Copper
Spring Bending Copper
Soldered Capillary Joints
Compression and Press-Fit Joints
Low Carbon Steel (LCS) Pipework
Jointing LCS Pipe
Plastic Pressure Pipe (PE & PB-1)
Jointing Plastic Pressure Pipe
Sanitation Plastics (PVCu, ABS, PP)
Jointing Sanitation Plastics
Preparation of the Work Area
Notching and Drilling Joists
Pipe Clips, Brackets, and Fixings
Installation Techniques
Testing and Commissioning
The underlying science of plumbing: heat transfer, pressure, water properties, and basic electrical principles.
21 Lessons
SI Units and Measurement
Properties of Solid Materials (Metals)
Properties of Solid Materials (Plastics & Ceramics)
Mechanical Properties
Corrosion of Metals
Other Forms of Corrosion
Degradation of Plastics
Properties of Liquids (Water)
Properties of Liquids (Others)
Properties of Gases
Temperature and Heat
States of Matter
Sensible and Latent Heat
Conduction and Convection
Radiation and Expansion
Energy, Heat, and Power Calculations
Velocity, Acceleration, and Flow Rate
Force and Pressure
Siphonic Action
Mechanical Principles
Forces in Action
Installation, maintenance, and UK Water Regulations concerning domestic cold water supply systems.
12 Lessons
Incoming Mains: Communication vs. Supply Pipes
Installation Depths and Building Entry
Direct Cold Water Systems
Indirect Cold Water Systems
Siting and Installing Storage Cisterns
Float-Operated Valves and Overflows
Principles of Backflow
Terminal Fittings and Taps
Non-Mechanical Backflow Prevention (Air Gaps)
Water Treatment and Distribution
Mechanical Backflow Prevention Valves
Commissioning: Testing and Flushing
Design and installation of domestic hot water supply systems, including vented systems and cylinder safety.
17 Lessons
Hot Water Legislation and Standards
System Selection Factors
Open Vented Hot Water Systems
Hot Water Storage Cylinders
Combination and Quick Recovery Cylinders
Unvented Hot Water Systems
Localised Hot Water Systems
Hot Water Safety Controls
Discharge Pipework (D1/D2)
Thermostatic Mixing Valves (TMVs)
Decommissioning Hot Water Systems
Installing Shower Mixing Valves
Replacing Hot Water Components
Expansion of Hot Water Pipework
Testing and Inspecting Hot Water Systems
Hot Water System Fault Finding
Maintenance and Component Replacement
Core principles, pipework layouts, and components used in domestic central heating systems.
Introduction to Central Heating & Part L
Heat Emitters: Radiators and Convectors
Radiator Valves: TRVs and Lockshields
System Layouts: One-Pipe and Two-Pipe
System Layouts: Microbore and Manifold
Boiler Types: Regular, System, and Combination
Condensing Boiler Principles
Open Vented Central Heating Systems
Sealed Central Heating Systems
Expansion Vessels and Pressure Relief
Central Heating Pumps and Circulators
System Controls: Programmers and Thermostats
Motorised Valves: 2-Port and 3-Port
Fully Pumped Systems: The Y-Plan
Fully Pumped Systems: The S-Plan
Filling, Venting, and System Balancing
Water Treatment and System Protection
Installation of guttering, rainwater drainage systems, and weatherproofing for domestic properties.
9 Lessons
Rainwater Systems, Materials, and Profiles
Roof Area Calculations and Sizing
Brackets, Falls, and Setting Out
Jointing, Expansion, and Downpipes
Terminations, Harvesting, and Maintenance
Introduction to Sheet Lead Weatherproofing
Lead Tools, Safety, and Handling
Types of Flashing and Fixing Methods
Testing and Commissioning Rainwater Systems
Above ground drainage systems, traps, trap seals, and the installation of sanitary appliances.
7 Lessons
Introduction to Sanitation and Part H
Traps and Trap Seal Depths
Causes of Trap Seal Loss
Sanitary Appliances: Water Closets (WCs)
Above Ground Drainage System Layouts
Baths, Basins, Sinks, and Showers
Testing and Maintaining Sanitation Systems
Interactive City & Guilds Level 2 and Level 3 plumbing lessons, flashcards and mock exams, built for UK students and professionals.
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