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.

Expert Tutors
Learn from industry professionals
Flexible Learning
Classroom, online live & guided learning
Practical Support
Assignments & portfolio guidance included
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500+ Learners Trained in Just Last Year
Ongoing Portfolio Support
City & Guilds Approved Centre
Industry-recognised UK qualification
Experienced Tutors
Taught by working assessors
Online Learning Materials
Comprehensive study resources & portal access
Portfolio Support
Hands-on assignment guidance
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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

What Our Learners Say

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Frequently Asked Questions

What if I fail an assignment?+

There's no need to worry. We don't expect every assignment to be perfect the first time.

If your assessor feels that an assignment needs further work, they'll provide clear, constructive feedback explaining what needs to be improved. You'll then have the opportunity to make the required changes and resubmit your work.

There is no limit on the number of resubmissions, so you can continue improving your assignments until they meet the required standard. Our goal is to help you understand the subject and successfully complete your qualification, not to catch you out.

Throughout the process, you'll have access to tutor support whenever you need it. If you're unsure about any feedback or need additional guidance, your tutor will be happy to explain what's required and help you move forward with confidence.

We believe learning should be supportive rather than stressful, which is why we work with you every step of the way until you've successfully completed your portfolio and achieved your qualification.

Can I assess every commercial building after qualifying?+
Not necessarily. Your permitted scope depends on your qualification and accreditation level. More complex buildings may require higher-level competence or different modelling methods.
Do you issue hard copy certificates?+

Awarding organisations now issue digital certificates for most qualifications, which are widely accepted by employers, accreditation schemes and other organisations throughout the UK.

Your digital certificate is secure, easy to store and can be downloaded and shared electronically whenever proof of your qualification is required.

If you would like a professionally printed hard copy, we can arrange this for an additional fee. Once your qualification has been fully signed off, you'll receive a sign-off email containing details of how to request a printed certificate and the applicable postage and administration charges.

If an official hard copy certificate is available from the awarding organisation, we'll provide you with all the available options in your sign-off email, allowing you to choose the option that best suits your needs.

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.