City and Guilds of London Institute · RQF Level 3
City & Guilds Level 3 Diploma in Gas Utilisation Maintenance: Cookers, Tumble Dryers, Leisure, Domestic Space Heating, Water Heating, Limited Wet Central Heating and Domestic Warm Air
You don’t just earn this. You learn to use it, one-to-one, on your own real work.
- LevelRQF Level 3
- Total credits236
- Guided learning1,580 hours
- Units in this qualification20
Awarded by City and Guilds of London Institute · on the Ofqual register
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See how this course maps onto your role
Ten quick questions, one per Future Fluency, asked against this qualification rather than a generic one.
About 5 minutes · No card · Nothing to commit to
What you’ll learn
What each unit actually teaches you to do
These are the units City and Guilds of London Institute registers against this qualification. It is a catalogue, not a syllabus. Which of them you take depends on the combination the qualification requires, and that is set by the awarding body rather than by us. Every unit here is regulated, and every one you earn is yours to keep.
Install, commission and de-commission gas pipework up to 35mm 1¼ diameter in domestic and small commercial premisesReal unit · City and Guilds of London Institute
What you'll be able to do
- Design gas systems for installing gas pipework
- Plan and prepare work activities for installing domestic gas cookers, tumble dryers and leisure appliances
- De-commission domestic gas pipework to industry standards
- Install, exchange, and remove gas pipework to industry standards
- Pre-commission and Commission gas pipework to industry standards
- Use and communicate data and information to carry out de-commissioning, installation and commissioning work
- Resolve problems which could affect the de-commissioning, installation and commissioning process
- Install, commission and de-commission gas pipe
Maintain domestic gas cookers, tumble dryers and leisure appliancesReal unit · City and Guilds of London Institute
What you'll be able to do
- Plan and prepare work activities for maintaining domestic gas cookers, tumble dryers and leisure appliances
- De-commission domestic gas cookers, tumble dryers and leisure appliances to industry standards
- Maintain domestic gas cookers, tumble dryers, and leisure appliances to industry standards
- Pre-commission and Commission domestic gas cookers, tumble dryers and leisure appliances to industry standards
- Use and communicate data and information to carry out de-commissioning, maintenance and commissioning work
- Resolve problems which could affect the de-commissioning, maintenance and commissio
Maintain domestic gas space heating appliancesReal unit · City and Guilds of London Institute
What you'll be able to do
- Plan and prepare work activities for maintaining domestic gas fires and wall heaters
- De-commission domestic gas fires and wall heaters to industry standards
- Maintain domestic gas fires and wall heaters appliances to industry standards
- Pre-commission and Commission domestic gas fires and wall heaters to industry standards
- Use and communicate data and information to carry out de-commissioning, maintenance and commissioning work
- Resolve problems which could affect the de-commissioning, maintenance and commissioning process
- Maintain domestic gas space heating appliances
Maintain gas warm air central heating systems and appliancesReal unit · City and Guilds of London Institute
What you'll be able to do
- Plan and prepare work activities for maintaining warm air central heating
- De-commission warm air central heating to industry standards
- Maintain warm air central heating to industry standards
- Pre-commission and commission warm air central heating to industry standards
- Use and communicate data and information to carry out de-commissioning, maintenance and commissioning work
- Resolve problems which could affect the de-commissioning, maintenance and commissioning process
- Maintain gas warm air central heating systems and appliances
Maintain gas water heating and wet central heating appliancesReal unit · City and Guilds of London Institute
What you'll be able to do
- Plan and prepare work activities for maintaining water heating and wet central heating appliances
- De-commission water heating and wet central heating appliances to industry standards
- Maintain domestic water heating and wet central heating appliances to industry standards
- Pre-commission and Commission water heating and wet central heating appliances to industry standards
- Use and communicate data and information to carry out de-commissioning, maintenance and commissioning work
- Resolve problems which could affect the de-commissioning, maintenance and commissioning process
- Maintain water hea
Specific Core Installation & MaintenanceReal unit · City and Guilds of London Institute
What you'll be able to do
- Demonstrate the use of common tools used in the gas utilisation industry
- Demonstrate that gas safety controls are operating correctly and explain the actions required when unsafe or ineffective operation is found
- Know the construction and operation of chimneys used for domestic gas appliances
- Demonstrate how to carry out chimney performance checks
- Identify and complete the correct notices, forms and labels used in domestic gas utilisation
- Demonstrate how to work correctly and safely with electrical systems and components used in domestic gas utilisation
- Demonstrate the correct use of co
Tightness test, purge, commission and de-commission gas pipework up to 35mm 1¼ diameter in small natural gas installations.Real unit · City and Guilds of London Institute
What you'll be able to do
- Plan and prepare work activities for tightness testing and direct purging
- De-commission gas systems and components to industry standards
- Tightness testing and direct purging of gas systems and components
- Use and communicate data and information to carry out de-commissioning, tightness testing and direct purging
- Resolve problems which could affect de-commissioning, tightness testing and direct purging
- Understand how to tightness test, purge, commission and de-commission gas pipework up to 35mm 1¼ diametre in small natural gas installations
Understand and apply domestic central heating system installation and maintenance techniquesReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the uses of central heating systems in dwellings
- Know the types of central heating system and their layout requirements
- Know the site preparation techniques for central heating systems and components
- Apply site preparation techniques for central heating systems and components
- Know the installation requirements of central heating systems and components
- Install central heating systems and components
- Know the service and maintenance requirements of central heating systems and components
- Service and maintain central heating systems and components
- Know
Understand and apply domestic central heating system installation, commissioning, service and maintenance techniquesReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the types of central heating system and their layout requirements
- Know the design techniques for central heating systems
- Apply design techniques for central heating systems
- Know the installation requirements of central heating systems and components
- Install central heating systems and components
- Know the fault diagnosis and rectification procedures for central heating systems and components
- Diagnose and rectify faults in central heating systems and components
- Know the commissioning requirements of central heating systems and components
- C
Understand and apply domestic cold water system installation and maintenance techniquesReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the cold water supply route to dwellings
- Know the types of cold water system and their layout requirements
- Know the site preparation techniques for cold water systems and components
- Apply site preparation techniques for cold water systems and components
- Know the installation requirements of cold water systems and components
- Install cold water systems and components
- Know the service and maintenance requirements of cold water systems and components
- Service and maintain cold water systems and components
- Know the decommissioning requirements of cold wa
Understand and apply domestic cold water system installation, commissioning, service and maintenance techniquesReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the legislation relating to the installation and maintenance of cold water supplied for domestic purposes
- Know the types of cold water system layout used in multi-storey dwellings
- Know the types of cold water system layout used with single occupancy dwellings fed by private water supplies
- Know the requirements for backflow protection in plumbing systems
- Know the uses of specialist components in cold water systems
- Know the design techniques for cold water systems
- Apply design techniques for cold water systems
- Know the fault diagnosis and rectification procedures for cold
Understand and apply domestic hot water system installation and maintenance techniquesReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the types of hot water system and their layout requirements
- Know the site preparation techniques for hot water systems and components
- Apply site preparation techniques for hot water systems and components
- Know the installation requirements of hot water systems and components
- Install hot water systems and components
- Know the service and maintenance requirements of hot water systems and components
- Service and maintain hot water systems and components
- Know the decommissioning requirements of hot water systems and components
- Decommission hot
Understand and apply domestic hot water system installation, commissioning, service and maintenance techniquesReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the types of hot water system and their layout requirements
- Know the uses of specialist components in hot water systems
- Know the design techniques for hot water systems
- Apply design techniques for hot water systems
- Know the installation requirements of hot water systems and components
- Install hot water systems and components
- Know the fault diagnosis and rectification procedures for hot water systems and components
- Diagnose and rectify faults in hot water systems and components
- Know the commissioning requirements of hot water systems and components
Understand and carry out electrical work on domestic plumbing and heating systems and componentsReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the electrical standards that apply to the mechanical services industry
- Know the principles of electricity supply to dwellings
- Know the layout features of electrical circuits in dwellings
- Understand the electrical industry safe isolation procedure
- Carry out the electrical industry safe isolation procedure
- Know the site preparation techniques for the electrical connection of mechanical services components in dwellings
- Apply site preparation techniques for the electrical connection of mechanical services components in dwellings
- Understand the installation and co
Understanding Buildings, Services and StructuresReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the types and characteristics of construction materials
- Know the construction methods of buildings and how to read and interpret plans
- Use hand and power tools within gas utilisation
- Know the installation requirements methods and materials for gas pipework (NG&LPG)
- Know the ventilation requirements, types and methods
- Know the different types and operation of suitable chimney systems for gas appliances
- Know the methods for checking and testing chimney performance
Understanding Combustion and Properties of GasReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the natural gas supply network and LPG supplies
- Know the operation pressure regulators
- Know the factors affecting pressure loss and the equipment used to measure gas pressure
- Understand the combustion of gases, and potential risks
- Know gas burner operation, design, features and types
- Know the properties and Characteristics of NG and LPG
Understanding Gas SafetyReal unit · City and Guilds of London Institute
What you'll be able to do
- Know industry specific legislation and standards
- Know gas safety legislation
- Know the gas emergency actions, responsibilities and procedures relevant to the industry
- Know the Gas Industry Unsafe Situations Procedure
- Know the gas operatives responsibilities in accurately completing emergency notices, warning labels and forms
- Know the correct installation locations and types of Emergency Control and Appliance Isolation Valves
- Know and understand the requirements for Natural Gas and LPG metre installations up to .035cu mtrs
- Know the types of gas metre housings and compartments and the
Understanding Health and Safety in Gas UtilisationReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the Health and Safety legislation
- Know the health and safety measures for gas utilisation
- Know the regulations covering the use and disposal of hazardous substances
- Know manual handling methodology and lifting techniques
- Identify and respond to accidents which occur at work
- Know the requirements for maintaining electrical safety, earthing protection systems and associated dangers
- Know Fire safety
- Know the safety requirements for working at heights
- Work safety in confined spaces
Understanding Scientific Principles in Gas UtilisationReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the Systeme Internationale (SI) units and uses within gas utilisation
- Know the sources of energy and heat transfer
- Know the combined gas laws
- Know energy efficiency legislation
Water Compulsory Core UnitReal unit · City and Guilds of London Institute
What you'll be able to do
- Know the energy conservation legislation that applies to the building services industry
- Know the applications of energy sources used in the building services industry
- Know the importance of energy conservation when commissioning building services systems
- Know the methods of reducing waste and conserving energy while working in the building services industry
- Safely dispose of materials used in the building services industry
- Know the methods of conserving and reducing wastage of water within the building services industry
- Know the principles of plumbing science and how to app
The honest bit
You’ve started things before
Most courses were built for a room full of people who aren’t you. A cohort moves on whether or not your week allowed it, and by the third week the thing you’re behind on becomes the reason you stop opening it.
There’s no cohort here, and no timetable to fall behind. Before anything starts, Zavmo asks when you’re sharpest and how long you can realistically sit down for, then builds the sessions around those answers. A bad fortnight changes your pace. It doesn’t put you behind.
And you only pay once you start learning. Searching and planning are free, and you can cancel any time — so the cost of finding out is an afternoon, not a year.
Your passport
Every credit is a stamp you keep
Level 3 credits are regulated. They don’t vanish when a subscription ends or a website closes. They travel to any employer, and Zavmo keeps the map of what you’ve earned and what’s next.
Each stamp is a real unit registered against this qualification.
Who’d teach you this
The Evidence Evaluator
Assessor
Helps you show what you can actually do, gathering the evidence that proves it as you learn.
Meet all twelve tutorsWhere this connects
Where these credits take you
A qualification is never a dead end here. See the jobs its credits open, the national occupational standards its units map to, and the future skills they quietly build.
- Carry out periodic examinations of gas storage vessels and supply systems
- Carry out work on unvented hot water storage operations
- Diagnose and rectify faults in gas storage vessels and supply systems
- Install Liquified Petroleum Gas (LPG) Systems and Components
- Install gas storage vessels and supply systems
- Maintain Gas Warm Air Central Heating Systems and Appliances Legacy
- Maintain gas systems, installations, components and gas-fired plant
- Maintain gas water heating and wet central heating appliances Legacy
Skills it covers
What the job actually needs. These are the standards the units are built against, in the words employers and awarding bodies already use for the work itself.
How you’ll actually learn this
One-to-one, on your own real work
A qualification is usually something done to you: sit the class, sit the exam, hope it sticks. Here it’s the opposite. You learn it one-to-one with a companion, on your own real work, and you keep going until you can use it, not just recall it.
Applied to your own work
- Remember
- Understand
- Apply
- Analyse
- Evaluate
- Create
Built for City & Guilds Level 3 Diploma in Gas Utilisation Maintenance: Cookers, Tumble Dryers, Leisure, Domestic Space Heating, Water Heating, Limited Wet Central Heating and Domestic Warm Air
20 units in this credential, in the order it lists them, awarded by City and Guilds of London Institute.
- Install, commission and de-commission gas pipework up to 35mm 1¼ diameter in domestic and small commercial premises
- Maintain domestic gas cookers, tumble dryers and leisure appliances
- Maintain domestic gas space heating appliances
- Maintain gas warm air central heating systems and appliances
- Maintain gas water heating and wet central heating appliances
- Specific Core Installation & Maintenance
and 14 more in the full unit list below.
One to one, not one to many
No two people run this the same way
A course is written once and handed to everyone. This is assembled around you, and keeps changing as it learns you. Five things it reads, and what each one changes.
- Your actual work Every unit is taught against a live piece of your own work, not a worked example from a textbook.
- What you already know The first conversation finds your starting point, so you skip what you can already do and spend the time on what you cannot.
- The conditions you learn under Not a learning-styles quiz. The evidence does not support those. The dimensions the research does back, read once and used to shape the plan.
- How far you got last time It picks up mid-thought. The tutor knows what you said, what you struggled with, and what it asked you to try.
- Which tutor suits the moment Twelve of them, each for a different kind of thinking. The one who walks you through a first idea is not the one who stress-tests it.
See how you learn, free. Eight questions, no sign-up. A directional taster; the diagnostic inside Zavmo goes deeper and keeps adapting.
Why it sticks
Most courses stop at remembering
There’s a well-known ladder of how deeply you learn something, called Bloom’s Taxonomy. Most courses get you up the first two rungs: you remember some facts, you pass a test, you forget it. Real skill lives at the top. Judging, deciding, creating. And this isn’t a generic ladder: every rung has a named Zavmo tutor who walks you up it.
- 6CreateThe Creative Catalyst
- 5EvaluateThe Evidence Evaluator
- 4AnalyseThe Analyst
- 3ApplyThe Coach
- 2UnderstandThe Connector
- 1RememberThe Builder
Where most courses leave you Where Zavmo takes you
The value
Why the companion is worth £70 a month
You’re not paying for the units. They’re regulated, and the same wherever you earn them. You’re paying for the one thing that decides whether you actually get there: a companion that makes them stick, on your real work.
That is one-to-one on this qualification, every day, on the work you already do, for £70 a month. Your first module is free, so you can see the teaching before you pay for any of it. Billed monthly, cancel any time and billing stops.
Earned on your own work, taught to the top.
Everything you just read, learned one-to-one on the job you already do. Your first module is free, so you can see the teaching before you pay for any of it.
Build my plan, freeNo card. See how this qualification maps onto your role and meet the tutors who’d teach it, free. The learning begins when you subscribe. It’s £70 a month, billed monthly. Cancel any time and billing stops.