Working as a boiler engineer can be a rewarding, varied and lucrative career path that offers opportunities in both the domestic and commercial sectors, depending on your qualifications and registrations. But what work does a boiler engineer do, how do you get qualified to work on gas boilers and boiler installations, and what should you look for when deciding which boiler engineer course to do?

This boiler engineer course guide will take you through all that information, so if you’re contemplating a career as a boiler engineer, you’ll have a clear route to follow from initial gas engineer training, through to ACS and Gas Safe registration and on to more advanced technical knowledge about boiler fault finding and heating controls.

What does a boiler engineer do?

A gas boiler engineer is a gas engineer who works on gas boilers and heating systems. That could be boiler installation or boiler replacement, boiler servicing and gas safety checks, and boiler breakdown repair. They may work in commercial environments, or they may work on domestic heating systems, or both. That will depend on their training and qualifications, as there are different options for domestic and commercial heating system training.

How do I become a boiler engineer?

Training pathways into boiler engineering vary, but many engineers start with plumbing and heating or gas training before progressing to ACS assessments and Gas Safe registration where required.

Given that boiler engineers work with gas appliances, training to become a boiler engineer involves training to become a gas engineer.

To become a domestic gas engineer in the UK, you need to undergo a gas training course (either an NVQ or MLP) with an accredited gas training provider, compile a portfolio of work while supervised by a Gas Safe registered engineer, and hold the relevant ACS (Accredited Certification Scheme) before you can register with Gas Safe.

ACS assessments include core gas safety and ACS certificates for any area of work that you want to be Gas Safe Registered for.  In the case of a domestic gas boiler engineer, the ACS would need to be in core gas safety (CCN 1) and central heating boilers (CENWAT), as you can only work on the appliances for which you hold a current ACS and if you’re registered with Gas Safe.

What qualifications and registrations do I need to be a boiler engineer?

To be a domestic gas boiler engineer, you’ll need to hold the following qualifications:

To be a domestic gas boiler engineer, you’ll need to hold the following registration:

  • Gas Safe Registration

Gas Safe registration is renewed on an annual basis. ACS certificates are valid for 5 years.

If you want to work in commercial environments, there are specific ACS that an engineer needs to allow them to work on different tasks and appliances, in addition to the core commercial gas safety.

How can I learn boiler repair training?

Becoming a boiler engineer typically involves completing gas engineer training, gaining the relevant ACS assessments, registering with Gas Safe and then building additional knowledge through fault-finding, diagnostics and multi-meter training.

Many manufacturers run their own boiler training courses over one or two days that include fault-finding and diagnostics specific to their appliances, in much the same way as they offer product-specific boiler installation courses.

Some Gas Safe engineer training providers offer boiler fault-finding courses that are comprehensive across a range of manufacturers and appliances, including old and new boilers, to better reflect the variety of faults you could encounter in your day-to-day work.

What does a boiler fault-finding and repair course cover?

A five-day boiler fault-finding and heating controls course could comprehensively cover practical skills and technical knowledge in maintenance, finding and identifying faults, and repairs, including:

  • Safe and correct use of a multimeter
  • Safe electrical testing
  • Identifying boiler components and their function
  • How to test these components
  • Outline common faults and remedial steps on diverter valves, expansion vessels, and domestic heat exchangers
  • Introduction to different heating system controls, their function and how they work
  • How to wire up a range of heating systems
  • How to test correctly and identify faults
  • Learn about Smart controls

Expect a mixture of theory and practical, with the opportunity to work across a range of different boiler makes, models, and modernity. This is paired with training on different wiring systems and heating control diagnostics.

FAQs about boiler engineer courses

Do boiler engineers need to be Gas Safe Registered?

Yes. If you’re going to work with gas, you need to be registered with Gas Safe. It is a legal requirement in the UK.

Why should I do a boiler fault-finding and heating controls course?

Doing a boiler fault-finding and heating controls course will enhance your technical knowledge and practical skills. Being able to identify potential repairs rather than replacements could save you time and save your customers money. Being able to offer a wider range of work could increase the scope of work you can take on.

Where can I do a boiler fault-finding course?

Some manufacturers offer their own courses specific to their appliances. Some gas training providers, like construction training company Able Skills, offer their own courses in boiler maintenance, fault finding and repair.

What’s the difference between domestic and commercial heating systems?

There are quite a few differences between domestic and commercial heating systems. There are different regulatory considerations, but also the scale and capacity of the systems can vary significantly. If you want to do any commercial gas work, then you’ll need to hold the appropriate ACS. If you already hold your Domestic Core Gas Safety (CCN1), consider doing a Commercial Gas Changeover course to move into commercial work.

Is it worth becoming a gas boiler engineer?

A huge percentage of UK homes rely on natural gas for their heating. As with other trades, the persistent skills shortage in the UK is leading to a shortfall of gas engineers.  

How to get started

Boiler Engineer Courses at Able Skills

“Great experience and training on the boiler breakdown/ fault finding course ..Had been looking into getting more involved within the boiler aspect and this delivers ..” Review via Trustpilot.

For existing Gas Safe Registered engineers or anyone who’s done an Able Skills Gas Managed Learning Programme, the Able Skills Boiler Fault Finding & Heating Controls Course will boost your practical skills and enhance your technical knowledge of boiler maintenance, boiler fault finding and boiler repair.

Able Skills has delivered Gas Safe recognised domestic and commercial gas training courses since 2006. Our purpose-built training facility is in Dartford, Kent, has on-site parking and is accessible via rail and road from London and the southeast. Affordable accommodation is available for anyone travelling from further afield.

If you’d like any information about becoming boiler engineer or would like to check availability for the boiler fault finding and heating controls course, contact us today by phone or email.