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.
Featured Courses
Our most popular Energy Assessor qualifications
Self-Paced Domestic Energy Assessor Course | Guided Online Level 3 DEA Training
3-Day Online Domestic Energy Assessor Course | Live Level 3 DEA Training
2-Day Weekend Domestic Energy Assessor Course | Live Online Level 3 DEA Training
Upcoming Course Dates
Live availability across all our courses
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
Real reviews from our Google profile
Frequently Asked Questions
Do You Need to Join an Accreditation Scheme as a Non-Domestic Energy Assessor?+
Can I become self-employed?+
Are the Retrofit Assessor courses also City & Guilds approved?+
One of the key advantages of training with Ozone Group Training is the flexibility you'll have once you've qualified.
Unlike some training providers that are linked to a single accreditation scheme, our courses are independent of any one scheme. This means that once you've successfully completed your qualification, you're free to choose the accreditation scheme that best suits your needs, whether that's based on membership fees, support, software, insurance options or additional services.
This gives you the freedom to compare providers and select the scheme that's right for your business or career, rather than being restricted to a single option.
If you're unsure which accreditation scheme to join after qualifying, we'll be happy to explain the available options and help you choose the one that best matches your circumstances.
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.