0203 488 2554 training@ozonegroup.co.uk

Build Your Career inEnergy Assessment & Building Compliance

City & Guilds approved training in Domestic EPCs, Retrofit, SAP, Non-Domestic Energy Assessment and more. Flexible learning. Expert tutors. Real-world support.

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Industry-recognised UK qualification
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Taught by working assessors
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Featured Courses

Our most popular Energy Assessor qualifications

Why Ozone

Why Choose Ozone Training

We're working Energy Assessors who train new assessors — not a generic training company.

  • Run by practising DEAs since 2011
  • City & Guilds approved courses
  • Real-world tips, not just exam-pass content
  • Spread cost in interest-free instalments
  • 100% pass guarantee with free re-sits

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Frequently Asked Questions

Do I need prior experience?+
No prior experience required. You need good literacy/numeracy and basic IT skills.
How do I become a working Energy Assessor after the course?+

Once you've successfully completed your qualification, there are just a few simple steps before you can start carrying out Energy Performance Certificates (EPCs) professionally.

First, you'll need to join a government-approved accreditation scheme. Your accreditation provider will verify your qualification and authorise you to produce domestic Energy Performance Certificates (EPCs). Many accreditation schemes also offer professional indemnity and public liability insurance as part of their membership packages, making it easier to get started.
You'll also need the equipment required to carry out property assessments. This typically includes a laser measure, a tape measure and a tablet or smartphone for recording property information during inspections.

Once you're accredited and insured, you'll be able to lodge EPCs on the national register and begin working as a Domestic Energy Assessor.

Many of our learners choose to become self-employed, while others work for EPC companies, estate agents, housing associations, local authorities or property consultancies. The qualification offers flexibility, allowing you to work full-time, part-time or alongside your existing career.

At Ozone Group Training, our support doesn't stop when you qualify. We'll guide you through the accreditation process, advise you on the equipment you'll need and answer any questions you have as you take your first steps into the industry. Our aim is to help you become not only qualified, but also confident and ready to start working as a Domestic Energy Assessor.

Is a Commercial Energy Assessor the same as a Non-Domestic Energy Assessor?+
Yes. The terms are commonly used to describe the same profession. Non-Domestic Energy Assessor is the formal industry title, while Commercial Energy Assessor is often easier for customers to understand.

Ready to start your DEA career?

Speak to our team or book your course today. We'll guide you from enrolment to your first paid EPC.